CenturyLink Greenwave C4000 (C4000LG/XG) Login

Updated

The CenturyLink Greenwave C4000 (C4000LG/XG) is a modem-router (gateway) whose admin page answers on 192.168.0.1. Each unit has its own admin password printed on the device label — there is no shared default.

Contents
  1. CenturyLink Greenwave C4000 (C4000LG/XG) default login
  2. How to log in to the CenturyLink Greenwave C4000 (C4000LG/XG)
  3. If the login does not work
  4. More help
  5. Frequently asked questions
ModelLogin addressUsernamePasswordSource
Greenwave C4000 (C4000LG/XG)192.168.0.1adminOn the label (unique)Official doc

Checked against CenturyLink — Administrator Password, Advanced Modem Setup on 31 Aug 2026 (high confidence), via the ssid.ai dataset (CC BY 4.0).

“CenturyLink prints a unique Admin Username and Admin Password on each C4000's sticker — there is no universal default.”
  1. Connect to the CenturyLink Greenwave C4000 (C4000LG/XG) by Wi-Fi or a network cable. On a phone, turn off mobile data.
  2. Open a browser and go to 192.168.0.1.
  3. Sign in with admin / On the label (unique).
  4. Open the Wireless or Wi-Fi section to change the network name and password.

If the login does not work

  • Check the label first. This model has a unique password printed on the device — admin / admin will not work.
  • Someone may have changed it. A factory reset restores the login above.
  • Reset: hold the Reset button for about 10 seconds while the device is powered on.
  • Wrong address? Check your default gateway — see how to find your router’s IP.
  • Type http://, not https://, and turn off any VPN or Private DNS.

More help

Frequently asked questions

What is the default password for the CenturyLink Greenwave C4000 (C4000LG/XG)?

Username admin, password On the label (unique).

What is the CenturyLink Greenwave C4000 (C4000LG/XG) IP address?

The admin page is at 192.168.0.1.

How do I reset the CenturyLink Greenwave C4000 (C4000LG/XG)?

Hold the Reset button for about 10 seconds while the device is powered on.