Using your C3000 modem

Learn about using your C3000A or C3000Z modem/router, including features and specs, popular modem settings, and troubleshooting. You can also watch a video about controling WiFi on your C3000.

Recommended CenturyLink modem

Note: The Actiontec C3000A is being phased out of use. The Zyxel C3000Z is still one of our recommended newer modems.

C3000A and C3000Z modem

Features & specifications

WiFi supported:

  • 2.4 GHz: 802.11 b/g/n
  • 5 GHz: 802.11 ac (WiFi 5)

The Actiontec C3000A and Zyxel C3000Z gateway modems are tested and certified to run at these speeds* on the CenturyLink® High-Speed Internet network:

Technology Type Tested speed
ADSL up to 7 Mbps
ADSL2+ up to 20 Mbps (40 Mbps pair bond)
VDSL up to 100 (140 Mbps pair bond)
Fiber up to 940 Mbps

*Customer speed experiences will vary, particularly when accessing the internet wirelessly from different devices. Maximum download/upload speeds given are via a wired connection. Internet speeds are not guaranteed due to conditions outside of network control, including customer location, devices, equipment, and access over a wired or wireless connection; see for more information.

Top modem settings and tasks

Learn how to manage your internet and WiFi network using your modem. Below are some of our most popular topics. You can also visit the modem settings guide for a complete overview of settings and options.

Modem troubleshooting tips

  • Did you know?  If your internet connection is spotty or slow, the best place to start is to reboot your modem.

  • Still not running right? Check to see if your modem firmware is up to date.

Tip: If the firmware link doesn't work, try another browser (Chrome is known to have issues with this kind of link). Or, right-click the link, select "copy link address", then paste the link into a new browser tab.

Video: How to control your C3000 wireless settings

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