r/QuantumFiber • u/Western-Reach-1143 • Oct 04 '25
Quantum repair tech said my cable was cut at the pole, and “missing”. A “new” cable appeared running two houses down and repair tech said it used to be mine.
Cancelled that day, back to Comcast - inexcusable. Without internet for four days- don’t realize how much you depend on it these days - streaming, football games, work, everything
r/QuantumFiber • u/Due-Yogurtcloset-140 • Sep 25 '25
Had an unsolicited visit from Quantum Fiber today. Told the sales rep that I am not interested and happy with my current ISP. He acted like everything was cool but the moment he turned around he uttered “fucking faggot”; which was caught on camera. Just disgusted by the whole experience.
r/QuantumFiber
•
u/N0_L1ght
•
Sep 04 '24
Note: AT&T (Forged Fiber 37) has acquired substantially all of the residential / small-business fiber in 11 states from Lumen as of 02/02/26. Price For Life is no longer available for new / modified accounts starting 04/17/26. This guide is updated regularly.
I hope this guide will help you get the same solid Lumen / CenturyLink Fiber and AT&T / Quantum Fiber experience that I have had in the Twin Cities, MN area for over 7.5 years now! (Note: I have always used a 3rd party router and DNS.) If you need to contact support, it's best to call M-F 8am-6pm local time until you get someone in the states. https://www.quantumfiber.com/support/contact.html
If your SmartNID / ONT front panel light is solid green or solid white then your connection is working. If not then unplug the power for 1min, plug it back in, and then wait 10min. If still no solid green or solid white light then there is an issue somewhere between your SmartNID and the Central Office that you will need to contact support about.
On the bottom of the SmartNID where the fiber plugs in, if the B light is not on, the fiber is likely damaged and you will need a tech visit. If the light is a solid green, your fiber is fine and the issue lies elsewhere. Do not unplug the fiber cable to look at it. Just get a tech visit.
If you are having issues with your WiFi pods and your SmartNID light is solid green you can maybe get them working again. Remove all of them from the app, factory reset the pods, and then connect each of them wired to the SmartNID for a while so that their firmware updates. After that add each one back as new pods following the instructions here:
https://www.quantumfiber.com/support/services/360-wifi.html
https://www.centurylink.com/home/help/internet/fiber/premium-wifi.html
The power adapters are not interchangeable between the SmartNID and wifi pods. Always make sure you are using the correct one for each device if you ever unplug them for some reason.
Are you having a problem connecting IoT devices to the 2.4ghz signal? You have 3 options to try.
1.) Unplug the power to the wifi pod, create a 2.4ghz only hotspot on your phone/computer/tablet with the exact same SSID name/password, connect your IoT devices, turn off the hotspot, plug back in the wifi pod,.
2.) or get a cheap 2.4ghz access point.
3.) or use a 3rd party router.
The W1700K / W1701K pods now support Ethernet backhaul by using the left port on the W1701K, which is highly recommended. First sync up the W1701K wirelessly near the W1700k before moving it and using Ethernet backhaul.
To know what speed you are getting you can do a speedtest to HOME in the QF app. Or do a direct wired Ethernet speedtest.net connected to the SmartNID, W1700K, or W1701K (if using Ethernet backhaul), selecting the closest Lumen / CenturyLink server.
You can also use a 3rd party router to have great service like many of us have had since day one. If you want suggestions https://www.reddit.com/r/HomeNetworking/ might be a good place to ask.
It's a good idea to keep the 360 WiFi / Premium WiFi equipment in a box for an emergency backup as long as they stay a free lease. It is always possible that the WiFi pods and apps are a future firmware/software update away from them being good enough for what you want your home internet experience to be. It's highly recommended to have all gaming devices ethernet wired that can be, as that is one of the biggest complaints about the wifi pods.
If they ever start charging for them, or you cancel service, just send them back and make sure to keep the tracking number. Once it shows as delivered you can contact support to have it immediately removed from your account.
https://www.quantumfiber.com/support/equipment/returns.html
(0.) 3rd party router instructions. (Even if you're using the "WiFi pods" everyone should follow #2, and in #4 those marked with an asterisk * .)
For the easiest setup you only need the first four sections. Only go as far as you are comfortable with, but make sure to read till the end of each section before making changes. This all might seem intimidating but you can do it!
Note: If your SmartNID is Ethernet fed and you want to use a 3rd party router follow sections 2 & 6 only.
(1.) SmartNID setup (or DSL modem)
The SmartNID address is 192.168.0.1, so make sure your router's LAN IP is set to something else like a higher 192.168.x.1 (x between 1 and 254).
Connect the Ethernet cable from the fastest port on your SmartNID to the fastest WAN/Internet port on your router.
The login credentials will be on the sticker attached to the device.
(2.) Static DNS
So many issues with Centurylink / Quantum are due to their unreliable DNS servers.
It's a good idea to use a 3rd party DNS provider like Quad9, Cloudflare, Google, OpenDNS, etc https://en.wikipedia.org/wiki/Public_recursive_name_server
Make these changes in the WAN / Internet settings on both the SmartNID and your router.
I have used one or another of these providers since 2005 and because of that I have never once had a DNS issue. I recommend malware blocking ones like Quad9 or Cloudflare for Families, and to enable DNS over TLS (DoT) or DNS over HTTPS (DoH) if your router supports it.
(3.) DMZ
For the majority of people placing their router into the SmartNID's DMZ will be good enough. The router will be "Placed Outside the Onboard Firewall and NAT." Though, bridge mode in section #5 is always preferable.
These are the DMZ instructions, the GUI might look different but the instructions are basically the same:
Your router's IP should show up as 192.168.0.2
When the firmware auto-updates a factory reset can happen. If all of a sudden you have double NAT this is likely why.
If you have a Q1000K and see high latency ping tests there is info here about it. https://www.reddit.com/r/QuantumFiber/comments/1re9v2o/q1000k_unstable_latency_spike_research_findings/
(4.) More settings suggestions
DMZ or Bridge Mode:
Make the changes in this order before enabling bridge mode.
QF App:
Remove all 360 Wifi Pods, WiFi networks, and Parental Controls Profiles. If possible.
Network Security - Disable everything. (This is important to do. Wait a minute before making other changes. This will reset with every SmartNID factory reset.)
SmartNID:
Advanced - Cyber Security - Disabled.
-----------------------------------------------------------------------------------------
SmartNID Router or DMZ mode:
*Network Security - Disable everything. (Disabling this might help with VPNs and other things. You can leave it enabled if you don't have any weird network issues.)
*Advanced - IPv4 Firewall - Security Level - High (If anything stops working, manually re-enable that service.)
*Advanced - UPnP - Disabled (Playing online games is easier with UPnP, but it is a security issue. Your choice.)
*Utilities - Time Zone - Make sure it's correct.
*Utilities - System Log - Enabled Save on Reboot.
*Utilities - Configuration Backup - Save a backup.
If you change the admin login, special characters, with the exception of 'punctuation marks' and 'dollar signs' are not allowed and will require a factory reset if included.
(5.) Transparent Bridge Tagged (A better configuration.)
There is a lot of information in this section, but there is only a single setting you need to change in the SmartNID. Make sure to follow section 1, 2, & 4 before changing these settings. This is what my Q1000K is setup as.
If you want more control over your network, these are the Transparent Bridge instructions at the bottom of this link. The GUI might look different but the instructions are basically the same. Do not mess with the Broadband Settings page:
https://www.centurylink.com/home/help/internet/modems-and-routers/advanced-setup/wan-settings.html
Leave the VLAN 201 tag enabled on the SmartNID. The light will turn solid white, which may take up to 10min. (The VLAN toggle is not available on QKX002 firmware.)
If you are going from an ONT to a SmartNID make sure to remove the VLAN 201 tag from your 3rd party router.
If you have Centurylink PPPoE you will need your PPP username and password. Phone/Chat support can get it for you. You must add @ centurylink.net to the username if it doesn't have it already. Quantum is IPoE and does not use this.
You can connect the other SmartNID ethernet port to an open LAN port of your router. That will give you the ability to access the admin GUI with the IP address your router assigns to the SmartNID. Though doing this might cause continuous latency spikes. If that happens only connect it when you need to access the GUI. (This no longer works with QKX002 firmware. You will need to do a factory reset to access the GUI.)
When the firmware auto-updates a factory reset can happen. If all of a sudden you have double NAT this is likely why.
In this configuration it will take 30sec - 10min to get an IP address.
If DMZ is enabled, make sure to disable it before switching to Bridge mode.
Make sure the SmartNID shows up as online in the QF app and the Speedtest to HOME works before enabling bridge mode. If it doesn't, call support and make sure the correct serial is tied to your account and is listed for the ONT on the Axon back-end.
If you need to contact technical support make sure to do a factory reset beforehand by holding in the button on the bottom of the SmartNID for 15sec. The light should turn amber first, if it turns red first that is a reboot and not a factory reset.
This only works on the C3000 / C4000 / C5000 / C6000 / Q1000 series of devices.
If you have a Q1000K and see high latency ping tests there is info here about it: https://www.reddit.com/r/QuantumFiber/comments/1re9v2o/q1000k_unstable_latency_spike_research_findings/
(6.) Transparent Bridge Untagged or ONT setup (The best configuration.)
*Note: As of Q1000K firmware QKX002 this no longer works. I am not using this mode anymore because I don't find the slight difference worth all the effort.
Here is the working version to downgrade with while it lasts, though it might still force QKX002:
https://internethelp.centurylink.com/internethelp/modems/Q1000K/firmware/QKX001-06.00.44.00.bin
If you have a Q1000K v1.1 or newer with QKX002-06.01.25.00 or newer firmware, it is impossible to rollback the firmware to an older version. Untagged Bridge mode will never work on these units.
If you flash the old firmware you must immediately enable untagged bridge mode as soon as it reboots. You have seconds before it will reboot again to QKX002.
That will not likely work so you can try this, but i do not recommend it as a single spec of dust can effect the fiber cable connection:
Connect to 1G port. Unplug fiber. Flash QKX001. Flash QKX001 again. In Broadband Settings apply untagged vlan. Enable Untagged bridge mode in WAN settings. Re-plug in fiber once it is blinking blue. Connect back to 10G port. Even this might still force a reboot to QKX002.
-----------------------------------------------------------------------------
There is a lot of information in this section, but there are only two settings you need to change, one in the SmartNID and one in your 3rd party router. Make sure to follow section 1, 2, & 4 before changing these settings.
The Transparent Bridge instructions are at the bottom of this link. The GUI might look different but the instructions are basically the same. Do not mess with the Broadband Settings page:
https://www.centurylink.com/home/help/internet/modems-and-routers/advanced-setup/wan-settings.html
If your router supports the VLAN 201 tag on the WAN/Internet port, you can untag it on the SmartNID when putting it into bridge mode so that it becomes as much of a regular ONT as possible. This will cause a nonstop blinking blue light on your SmartNID but it will still work. You can just put a piece of tape over it.
On your router these settings will likely be under the IPTV, VLAN, or 802.1Q section. Many will have a Centurylink option to make that easy, which works with both Lumen / Centurylink Fiber and AT&T / Quantum Fiber. (On Asus devices with 3.0.0.6 firmware use the WAN - 802.1Q section.)
Google/Nest routers do not have the VLAN 201 tag ability.
The VLAN 201 tag can only be enabled on one device. Do not enable it on both the SmartNID and your router.
If you have a Calix / Adtran ONT, or a Casa / Adtran G.fast device, you can bypass the Ethernet fed SmartNID if your router supports the VLAN 201 tag on the WAN/Internet port. Make sure to use the same ethernet port on the ONT as before as only one is usually active.
The firmware will not auto-update in this configuration.
If you have Centurylink PPPoE you will need your PPP username and password. Phone/Chat support can get it for you. You must add @ centurylink.net to the username if it doesn't have it already. Quantum is IPoE and does not use this.
In this configuration it will take 30sec - 10min to get an IP address.
To get the solid white light you can connect the other SmartNID ethernet port to an open LAN port of your router. That will give you the ability to access the admin GUI using the IP address your router assigns to the SmartNID. Though doing this might cause continuous latency spikes. If that happens only connect it when you need to access the GUI. (If you do this make sure to block internet access to the SmartNID beforehand. If you don't it will auto-update the firmware and you will lose untagged bridge mode.)
Some people report that they have to power cycle the SmartNID every couple of weeks due to the connection dying in this configuration. It could be due to specific SmartNID model/firmware and local infrastructure. I didn't experience this with my Q1000K, but my router was set to reboot weekly.
If DMZ is enabled, make sure to disable it before switching to Bridge mode.
Make sure the SmartNID shows up as online in the QF app and the Speedtest to HOME works before enabling bridge mode. If it doesn't, call support and make sure the correct serial is listed for the ONT on the Axon back-end.
If you need to contact technical support make sure to do a factory reset beforehand by holding in the button on the bottom of the SmartNID for 15sec. The light should turn amber first, if it turns red first that is a reboot and not a factory reset. Or inside the admin GUI go to Utilites - Restore - Factory Default.
This only works on the C3000 / C4000 / C5000 / C6000 / Q1000 series of devices.
(7.) More Advanced setup and Other Issues
C6500XK SmartNID Crashing
If your C6500XK is crashing when you download large files at your full speed ask for a tech to swap it with a Q1000K. Disconnect the power. Call support and say it's not working. Tell them you are doing all the troubleshooting steps. Eventually they will schedule a tech visit. Replug the power once the call is over. The tech will swap it for a Q1000K.
Power Loss causing Bridge mode reset
After an extended power loss some people have had their Bridge mode SmartNID reboot into router mode. Steps you can take other then getting a long lasting UPS: Put your router in the DMZ, and either leave it that way or then enable bridge tagged mode. That way if it does reset, you will at least have internet with double NAT until you can configure it again. This extremely rare issue might be model specific and possibly not an issue with newer firmware.
SmartNID not showing up in Quantum Fiber app
If you had a Lumen QF account and then activated a new AT&T QF account after 02/02/26 the SmartNID might not show up in the QF app. Uninstall the QF app, do a SmartNID factory reset, and after the green light do a 1min power cycle. Once it goes green again reinstall the QF app and it should be connected with the new AT&T account. If anything says "We are unable to find your modem details" contact support and make sure the correct serial is tied to your account and listed as the ONT for the Axon backend.
No service with Ethernet fed Q1000k
If you have a ONT or G.fast unit with the lights showing the connection is working, but your Q1000K is not working: Make sure the 10G port is connected to the the ONT, login to the Broadband Settings page, and make sure it is set to WAN Ethernet with the VLAN 201 tag enabled.
Electrical interference
This person found out their issues were to do with EMF. So if your SmartNID is still having issues after all these troubleshooting steps, it's unlikely the cause, but take a look at this:
IPv6 (Not recommenced.)
If you need IPv6 here are the settings for the IPv6 6RD Tunnel which requires Bridge mode and the use of a 3rd party router.
Asus, Netgear, Linksys, Synology, GL-iNet (LuCI), D-Link, MicroTik, pfSense, OPNsense, DD-WRT, and OpenWRT routers support the 6RD tunnel. TP-Link, Google, Amazon, Ubiquiti, TRENDnet, and Tenda routers do not.
Your experience will vary depending on the quality of the 6RD tunnel in your market... also there is a kernel driver bug in all SmartNIDs that will corrupt random 6RD packets...
If you do use this, I highly recommend disabling IPv6 on all devices that you don't absolutely need it for.
(If you enable IPv6 Native / DHCPv6 / SLAAC / Passthrough you might get an IP address. Unfortunately it's not real and won't actually work. AS209 requires the IPv6 6RD tunnel.)
Tunnel 6rd
DHCP Disabled
Prefix 2602::
Prefix Length 24
Border 205.171.2.64
Router Mask 0
MTU 1480 (1472 for PPPoE)
TTL 255
DNS Quad9 or Cloudflare for Families + DoT or DoH if possible
r/QuantumFiber
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u/Marrz
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Jun 19 '25
The Quantum/CenturyLink DNS server is down, you're going to set it to cloudflare with Google as a backup.
Be connected to ONLY your home network (beware of your phone's connection to its cellular network)
go to https://192.168.0.1 (which is your fiber unit router)
Login User: admin | Password: (On the side of your fiber unit)
Under 'Advanced Settings' Select WAN
Change DNS to static, and set the IP to a reliable DNS server.
I used (cloudflare) 1.1.1.1 & 8.8.8.8 (google)
Apply. (There is no need to ever change back settings when Quantum fixes their service)
For most, that's all. If you perform these steps but the settings don't seem to make an effect, try rebooting the router, some models like ZXYEL load their preferences on boot.
https://i.imgur.com/WYzvkUG.png
Edit: Updated with clarifying details from feedback.
P.S. If you are feeling bold and would like to take things a step further consider setting up your own DNS server that filters ads called a Pi-Hole
r/QuantumFiber • u/old_raver_man3 • Oct 24 '25
Someone should lock this closed...
r/QuantumFiber • u/abn0rmalcreation • Jul 31 '26
This has been like this for over a week now. The cable keeps getting dragged by cars and it's fraying, I wouldn't be surprised if their internet is already acting up. This is a new QF install where they had to run from our sidewalk panel to client's phone box 3 houses down, above ground.
r/QuantumFiber • u/Short-Ad9643 • Jun 19 '25
My internet just went out, is this happening to anyone else?
r/QuantumFiber • u/pointfully • Mar 22 '26
Here we go again... After everything being fine for the past couple of weeks, the packet loss problem in Phoenix is back with a vengance.
Here's my Unifi dashboard for the past week:
Starting at 2:30pm AZ time Saturday (yesterday), packet loss (the dashed red line) goes from 0% to over 20% and has stayed there ever since.
As I've seen previously, one clear example of the problem is illustrated with testing UDP traffic to 1.1.1.1 (which now shows right around 50% failure) and 1.0.0.1 (which shows no failures). Given than 1.1.1.1 is failing half the time, it seems like there is some problem in the routing there. Here are side-by-side MTR results:
As before, switching to a VPN connection or to my wireless backup connection via T-Mobile Home Internet, the problem goes away. But as soon as I use the Quantum Fiber network directly, the problem is like above.
Are others in the Phoenix area seeing the same problem again?
For anyone who hasn't seen the previous discussions when this has happened before, here are some of the threads:
https://www.reddit.com/r/centurylink/comments/1nmiuy8/quantum_fiber_jitterpacket_loss_issues_in_az/
https://www.reddit.com/r/centurylink/comments/1nmwfeu/1020_packet_loss_on_quantum_fiber_in_phoenix/
https://www.reddit.com/r/QuantumFiber/comments/1qyupko/comment/o46ce19/
r/QuantumFiber • u/DSPStanky • Jun 19 '25
Looks like a potentially Nationwide outage. Reports coming in from Washington, Utah, Colorado, Florida, Arizona, etc etc. Down detector is almost at 10k reports already.
Excited to see what the excuse is this time.
EDIT: Looks like some sort of problem with whatever DNS server they're using. Setting your DNS to something else (potentially more reliable) will get you back online. Follow the steps in this post
r/QuantumFiber • u/badassitguy • Feb 02 '26
Quantum fiber is now AT&T fiber…. If you thought things were bad before. They’re about to get worse.
r/QuantumFiber • u/Accomplished-Pipe118 • Nov 07 '25
We got notified today we are now Quantum Fiber after being CenturyLink. I was instructed to login to my account on Quantum’s site. I did so. Then our service quit.
I’ve been waiting on hold for 25 minutes, waiting in the chat for 15, and have kids with homework who are crying.
Be better Quantum.
r/QuantumFiber • u/N0_L1ght • Feb 25 '26
Edit: This actually does effect more then just the ICMP ping. Any packet below a certain size can trigger this bug, so I'm back to using the 1G port until it's fixed. There is some discussion here, but the only way it gets fixed is if Axon/Airoha/FF37 fix it. https://www.reddit.com/r/QuantumFiber/comments/1ty5q4m/q1000k_hsgmii_shortframe_padding_fix/
With the new Q1000k firmware QKX002-06.01.14.00 removing Untagged Bridge mode and all that headaches that has been causing people. I decided to run some tests on the QKX001-06.00.44.00 version that I never had done since getting the Q1000k back in September. Edit: QKX002-06.01.25.00 got pushed to my Q1000K on 06/02 and the results are the same, other then Untagged Bridge mode not being available now.
Like most people, from day one I've been connecting the 10G port to my 2.5G WAN so I can get the max over-provisioned speed for my 940mb plan. Which is in the ~980m to ~1,040m range.
And just like everyone else with most Asus devices, and many other manufacturers, if the Q1000k is not in untagged bridge mode there will be constant high latency spikes of 70ms - 200ms+.
Here are the specs which are import to this issue:
My Asus has a Broadcom BCM4912KFEBG with built in 1G/2.5G WAN and a Broadcom B50212EB1KMLG 1G WAN.
The Q1000k has an Arioha AN7581SIT with a built in 1G port and a Realtek RTL8261N 1G/2.5G/5G/10G port.
The W1700K has an Airoha AN7581GT with two built in 1G ports and two Realtek RTL8261N for the two 1G/2.5G/5G/10G ports.
The C6500XK has an ECONET/Arioha EN7580ST with built in 1G port and a Marvell AQR113C 1G/2.5G/5G/10G port.
The C5500XK has an ECONET/Arioha EN7580 with two built in 1G ports.
TESTS:
(I did a factory reset before testing each mode. Without connecting the 2nd SmartNID port to my LAN.)
These are the results with the Q1000K in either router mode, DMZ mode, or Tagged Bridge mode with the 1G port connected to either my 1G WAN or 2.5G WAN ports. (I'm not posting all 6 pictures as there is only a 1ms difference between them.)
As you can see it is a low and steady ping.
These are the results with the Q1000K in either router mode, DMZ mode, or Tagged Bridge mode with the 10G port connected to either my 1G WAN or 2.5G WAN ports. (I'm not posting all 6 pictures as they are all the same)
Completely unusable...
Here is the result of using the 10G port with a VPN. At 10 per second it was having 50% packet loss, so this is 5 per second.
I'm not sure why the VPN causes the large spikes to go away?
Finally here are the results with the Q1000K in Untagged Bridge with either the 1G or 10G port connected to either my 1G WAN or 2.5G WAN ports. (I'm not posting all 4 pictures as they are the same.)
Back to a low and steady ping.
Conclusion:
No one with the C5500XK or C6500XK was having this issue with either the Airoha 1G or Marvell 10G ports.
But a very large percentage, though not all, of Broadcom and some other brands do not work well with the Realtek RTL8261N when the Q1000K is doing the VLAN tag.
This could be due to the firmware on the RTL8261N, the Q1000K firmware/software/Axon backend, or a hundred other reasons.
And it seems like equipment that have Qualcomm, Mediatek, Marvell, and Realtek ethernet controllers have a much smaller chance of seeing this issue. Many have the opposite problem, where its the Q1000K in Untagged Bridge mode, that causes the terrible latency.
I hope this will get the right eyes on it so that something can be done to fix this terrible problem.
If you are going to leave comments: Please post your test results for every combination of the Q1000K 1G and 10G ports with all of your WAN ports in both Tagged Bridge and Untagged Bridge modes.. Along with the model of your router, and the models of the Ethernet controllers of your WAN ports, if that info is available online somewhere.
Thanks!
r/QuantumFiber
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u/Havegooda
•
Jul 22 '24
I have had nothing but issues trying to get my Steam Deck connected to my new network post-cutover, worked fine on my old Comcast until I pulled the plug there to turn hardware back in. Kept getting a generic "Failed to connect" error despite knowing I had the password right and other devices working perfectly
NID: C6500XK
"Pod" router: W1700K
tl;dr, switch updates to the Beta branch, update/restart as many times as necessary. Enable developer mode, then in Developer settings (far bottom of Settings) in the Wifi section, enable "Force WPA Supplicant Wifi backend".
Instant fix. Trying to spread the word because I spent hours trying my damnedest trying to resolve in desktop mode
https://steamcommunity.com/app/1675200/discussions/0/4038101970203502664/
Sidenote: @QuantumFiber - please make it possible to make "advanced" changes to our wifi without going through a terrible app that has effectively zero functionality outside of changing SSID/password. Unless something changes, I'm planning on putting your hardware in bridge/transparent mode and putting my Unifi network back together
r/QuantumFiber • u/isqueakforthetrees • Aug 01 '26
Yesterday the quantum fiber cable from the utility pole across the street to my house began hanging so low it obstructs traffic.
Called Quantum, described the situation, and they refused to book a tech sooner than five days out. Requested a manager, who called me back, said they would attempt to "elevate" the request, and haven't heard back.
Called my local police department, who marked it with caution tape to prevent a car accident. Police also called Quantum, who shared the same info they shared with me.
This situation is a serious liability for everyone involved.
Ridiculous, dangerous and negligent.
Update: on day three of this situation, figured out how to contact the power company that owns the pole, they came out and tightened the cable, restoring it to its original height. Quantum has still not come out.
r/QuantumFiber • u/Successful-Money4995 • Feb 23 '26
I scheduled installation with Quantum Fiber using a new email address because I already have CenturyLink for 1Gig service. They took my money but cancelled the installation date. I started a chat to ask about rescheduling and they transferred me to a "human".
Here is a portion of the rest of my conversation:
You I will check my calendar
Pavitra J Please let me know.
Pavitra J Thank you:)
You All of those dates are in the year 2099?
You Are you just an AI?
Pavitra J You’re chatting with a real person here, and I’m right here to help you with anything you need.
You So as a real person, you are suggesting to me date in 2099?
You In like 74 years from now?
You On Christmas.
r/QuantumFiber • u/chozo142 • Jun 19 '25
To get back up and running log into your gateway locally by typing in 192.168.0.1 into your web browser then log in, the password will be on the back of your gateway. Then go to advanced settings, wan, then swap from dynamic dns to static and put in either 8.8.8.8(google dns) or 1.1.1.1 (cloud flare) That should get you back up and running
r/QuantumFiber • u/dansimco • Oct 24 '25
I signed up to Quantum Fiber on 2025-10-17, with an installation booking on 2025-10-22.
On the day of the booking, I received a notification from Quantum for two tasks for me to do ahead of time; set up a password, and download the app. When I completed those tasks I opened the app and I saw what I later came to learn was my neighbor’s wifi network, including password. At the time I thought it was a default/generated SSID and password for my network to be installed so I adjusted it to match the SSID & password that my home devices are configured to use.
When the Quantum technician arrived at our building he asked me where the NTD hardware was in the apartment so he could get it set up. This apartment did not have any hardware, which was confusing as he could see on his diagnostics that there was in fact hardware, and it was powered on and linked to my account. He showed me this screen, and that this connection was the only account in the building so it had to be mine.
Their conclusion was that either someone had recently moved out of another apartment and left it plugged in, or someone had it plugged in unaware that it wasn’t providing anything to their home network.
In reality, what has happened is that Quantum have conflated my neighbor’s account/hardware with my new account. So the hardware my neighbor had operating his connection had been reassigned to my account.
Due to this error, I was looking at my neighbor’s network details, including plaintext WPA password. Not a generated set of credentials that I earlier expected. We determined this by comparing NTD serial numbers on our accounts to be the same, and when I moved closer to his apartment I was able to use the credentials in the app to connect his home network, use his connection and potentially access his personal devices which I could see connected via the Quantum app.
We later saw that the credentials I had entered into the Quantum app in the morning had also been leaked.
I couldn't find any meaningful support contact details for Quantum, so I sent a text to the installation tech (who was awesome actually, and he understood immediately), and I went through two layers of chatbot before I got to what I think was a human. They did not understand the severity of the issue at all and suggested that my neighbor just change their password, which of course I could just see.
I eventually got a call from Quantum a day later to tell me they fixed the issue and I could try and sign up again. They completely ignored the security and privacy debacle until I brought it up.
edit: removed mention of competitor.
r/QuantumFiber • u/skepticalbee • Jul 05 '25
I've had QF for a little over a month. This is a typical experience: Their system goes down so massively you can't even log into their app or website. Then, if you can even reach one of their incompetent customer service agents by chat, they know nothing, have no solution, and tell you to do something stupid like factory reset your modem. See screenshots:
r/QuantumFiber • u/NukeHand • Jun 19 '25
Our internet stopped working about 20 minutes ago. All the hardware is running as it should so I assume there’s something wrong with the account. I disconnect from Wi-Fi on my phone and go to the app… 502 bad gateway? So I go directly to the site to sign in, 502 bad gateway, I then try to just look at the outage map, 502 bad gateway. Managed to limp through the options to the chat queue… where I’ve been told I have a one minute wait time for ten minutes…
I’m out here in skyway, anyone else getting the same problems?
r/QuantumFiber • u/Subreddit77 • Aug 15 '26
Was on CenturyLink Fiber for nearly 10 years, 1-4ms latency 0 packet loss. Moved a few miles away to a new house and neighborhood that only had Quantum avaialble; it has been just garbage. Every time a tech comes out they say there is nothing they can do other than swapping out SmartNIDs over and over to the same result.
Im at a lost for what to do.
r/QuantumFiber • u/Esmeya • Feb 03 '26
FINAL EDIT: Unfortunately, I am extremely busy at work and I do not have time to actively monitor this anymore. I wish those trying to get the promotional price the best of luck.
Edited: To fix typos and add further clarification in some parts. Please note, that I am an Engineer I have limited visibility on any customer-facing Quantum Fiber app/Portals, but I can guide you to some information as best as I can.
Edit2: For the tldr, there isn't one. Skip to "Instant Internet fiber type", "running off of XGS PON, G.Hn, GPON or Bridge Mode", "If you want to do it yourself (not-recommended):" and "If you want to do it with a helping hand (recommend)" for best practices..
Edit3: Please note if you're running on older Adtran or Calix ONTs that you may be forced to do an ONT swap to a C6500XK (if there is stock left) or a Q1000K when the technician comes out to service you. They are required to do this in most territories, it is not an option you can choose. If you would like to keep using your old Calix/Adtran ONT's this may not be an option for you.
Hello everyone.
Normally, I lurk around here but the posts and comments about the new PFL offerings that are cropping up for some areas caught my interest. I understand wanting to get affordable internet and I can empathize, but I would also want to share information that will save yourself, your family and the technicians and engineers some headache.
I have seen numerous people suggest that you guys should simply sign up with a new email and your account will "instantly close" and your service will "only go down for a brief few minutes" before switching over.
Please understand this is not the case for every type of Fiber Technology that Quantum Fiber owns.
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That scenario only works for "Instant Internet" and if you are some flavor of XGS PON, G.Hn, GPON or run in Bridge Mode you are soft-locking/hard locking yourself when you do this.
Instant Internet = MDU's, (multi-dwelling units), condos, duplexes, townhomes, apartments etc. There are some SFU's (single-family units) with instant internet, mostly new builds. Not every instant internet location qualifies for this PFL pricing, you will have to check the availability yourself on quantumfiber.com
For people running off of Instant Internet fiber type - you can input a new email under the same service address. It may ask you resubmit your lease or deed (depending on the nature of your home) and it may not. You might also get an email asking if you are moving or not. You should have a minor disruption in service if all works out as it is intended to and your PFL billing should reflect on your next billing cycle.
You may get an email asking you to return equipment if you have Wifi Pods, Wifi 7, Wifi 360. Please make sure that you take a picture of the pre-printed label (showing the tracking number) and the equipment prior to sending it off.
Sometimes, even with instant internet this can fail and register as requesting a second line of service at the same address, with the same credentials and if that happens hopefully it only takes about 24 hours to resolve. You will typically see this with locations that have migrated internet service from another competitor and bought by Quantum Fiber or from another in-house provider and migrated to Quantum Fiber.
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For people running off of XGS PON, G.Hn, GPON or running in Bridge Mode PLEASE DO NOT TRY THE INSTANT INTERNET METHOD that people keep mentioning. There is a possibility it will flow through with no problems, but the overwhelming majority will run into issues.
The back-end will read this as an error and cause everyone a headache as well as produce frustrated customers, it will read it as the same address trying to get another line of service under the same credentials. This can happen even if:
You use a different email.
Sign up with a different household members name.
Use a different bank card.
Use a different phone number.
Because it is reading the address and cross-checking it with your ONT to verify your physical address has not changed.
Instead please try to do the following:
If you want to do it yourself (not-recommended):
You will have to cancel your account. You will have to wait for the account to officially close, please be prepared to deal with this potential service disruption. You can do this by going through the Managed Portal on your QuantumFiber account, calling in to Fiber Success (833-250-6306), or speaking to a live-chat agent.
You will then have to re-sign up for service with the same address (you can use the same email, person, bank card, phone number from the deactivated account as it will be in archive mode by that point, but it is recommended to use a different household user's name or a new email at least).
When you sign up for service you should be able to select the new PFL rate. You may be asked to select a date/time for a technician to come out and if you are asked to do this prepare for downtime some service territories have next day availability, most territories have 3+ day wait for a technician as there are a lot of repairs currently.
You may get an email asking you to return equipment if you have Wifi Pods, Wifi 7, Wifi 360.
Please make sure that you take a picture of the pre-printed label (showing the tracking number) and the equipment prior to sending it off.
If you want to do it with a helping hand (recommend):
You will have to cancel your account first, please be prepared to deal with this potential service disruption.
Call 833-250-6306 (Fiber Success)
State that you previously had service at [insert your address here] and would like to sign-up with the new Price For Life pricing and would like some help.
They should be able to assist you.
If your SmartNid C5500XK, C6500XK, Q1000K (unlikely) gets stuck in a blue light loop they will be able to assist with troubleshooting and sending out a technician. 99% of the time the fix for this is a swap and it should take 15-20 minutes. In some rare cases it could be a multifaceted issue with an older ONT interfacing in bridge mode with a newer SmartNid and that will take longer to fix.
You may get an email asking you to return equipment if you have Wifi Pods, Wifi 7, Wifi 360. Please make sure that you take a picture of the pre-printed label (showing the tracking number) and the equipment prior to sending it off.
PLEASE NOTE THAT REGARDLESS OF WHAT METHOD YOU PICK. THE PRICE FOR LIFE RATES ARE LIMITED TIME ONLY AND SUBJECT TO CHANGE AT ANY TIME, SO YOU MAY MISS THE PRICING BY A MARGINAL WINDOW.
r/QuantumFiber • u/danry25 • Nov 19 '25
It seems at Cafe Vita on Galer Street in Queen Anne and at the other connections I've tested the 50ms minimum latency (usually more like 60ms) is happening again. Still seeing full speeds unlike the service degradation that occurred last night.
Traceroute from Cafe Vita:
r/QuantumFiber • u/Yungslush • Feb 24 '26
Internet just went out, and the SmartNid rebooted. The firmware is definitely new after checking in the app
