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Modem and Equipment Support
- Modem User Guides
- Modem Setup
- Troubleshooting
- WiFi and Security
- Modem Settings
- Upgrade, Replace & Return
- Videos
Learn about your CenturyLink modem
Top modems
Find the model number on your modem sticker
Check the sticker on the back or bottom of the modem to find your model name and number.
Fiber modems
Older modems - TIME TO REPLACE!
The following models are retired or being retired soon, and should be replaced as soon as possible. Visit the retired modems page to get specifications and firmware for each of the modems listed below.
Actiontec
C1000A
C2000A
C1900A
C2000A
PK5000A
PK5001A
Q1000A
Technicolor
C1100T
C2000T
Zyxel
C1000Z
C1100Z
FR1000Z
PK5001Z
Q1000Z
Looking for something else?
Install your modem and connect your internet
Setting up a new modem or new internet service from CenturyLink? Choose the type of modem you have to view a setup video and written instructions.
For the following models:
C4000BG * C4000BZ * C4000LG * C4000LZ * C4000XG
For the following models:
C3000Z * C3510XZ * C844G * C424G * C2300A * PK5000Z
For following models:
C5500XK SmartNID
Connect devices to your WiFi network
Top modem troubleshooting tips
Slow or spotty internet connection? The best place to start is rebooting your modem/router.
Is your firmware up to date? Modems usually update themselves, but you can check the settings to see if there's an upgrade available.
Tried the above and still having trouble? In more severe cases, a technician or support agent may instruct you to do a modem reset.
The best solution is prevention. Learn how to care for your router.
How to read and troubleshoot the modem lights
Depending on the model of CenturyLink modem/router that you have, the lights will function a bit differently. Choose the correct guide to help you understand what the status lights tell you and how to use them to troubleshoot your internet connection.
For the following models:
C4000BG * C4000BZ * C4000LG * C4000LZ * C4000XG
For all following models:
Actiontec * Adtran * Calix * Technicolor * Zyxel (except C4000)
Guide to the modem lights (C4000 series)
Guide to the modem lights (tower-style modems)
Modem WiFi settings
Modem security settings
Security types and WiFi standards of top CenturyLink modems
Modem settings
You can customize your WiFi, security, and more from the modem settings GUI.
Advanced modem settings
Please proceed with caution!
When you see this caution icon, it means the advanced setting you're looking at should only be configured with the help of a professional.
Modem upgrades, returns, and replacements
Time for a new modem?
Learn how to replace or upgrade a CenturyLink modem.
Modem Recycling
Send in your old CenturyLink modem and we'll recycle it at no cost!
Modem support videos
Use the modem utilities to reboot, reset, and update firmware
How (and why) to reboot your modem regularly
How to control your modem settings
How to manage your modem's wireless settings
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