Check the device label
- Username
- admin
- Password / access
- Password on the device label
Access: Web
Greenwave C4000 (C4000LG/XG)
Source (opens in a new tab)ROUTER & MODEM REFERENCE
CenturyLink router & modem login
Login addresses, default credentials, and setup instructions for CenturyLink equipment.
Connect to the router’s Wi-Fi or Ethernet first. These links open a new tab on your device; the address may differ if the network was reconfigured.
QUICK START
Most likely login options
Start with the option that matches your model. Defaults apply to the factory state; use the password you chose if the device has already been set up.
Options are ordered by manufacturer documentation and coverage among the listed models. Hardware, firmware, and ISP versions can differ.
MODEL DETAILS
Login addresses & credentials
Passwords are case-sensitive. “Leave blank” means an empty field; “Not specified” means the source does not provide that detail. Entries without a model are brand-level references.
| Model / device | Login address | Username | Password / access | Notes & source |
|---|---|---|---|---|
| CenturyLinkGreenwave C4000 (C4000LG/XG)Modem / gateway · Web | http://192.168.0.1 (opens in a new tab) | admin | Password on the device label | CenturyLink prints a unique Admin Username and Admin Password on each C4000's sticker — there is no universal default. If the sticker is lost the preset credentials can't be recovered, only reset back to those on the label. Recovery & reset instructionsOpen a browser to http://192.168.0.1 to reach the modem GUI. Sign in with the Admin Username and Admin Password printed on the sticker on the side/back/bottom of the C4000. These are unique per modem and cannot be retrieved if lost. To factory reset, press and hold the recessed Reset button ~10-15 seconds until the modem reboots, then sign in with the sticker's default Admin credentials. |
No records match these filters. Try another model or clear the filters.
Related login addresses
GET CONNECTED
How to reach your router
- Connect your computer or phone to the router’s Wi-Fi or an Ethernet port.
- Open a documented login address. If it does not load, look for the Router or Default gateway address in your device’s network settings.
- Match your model and hardware revision to the table. Use the device label or your setup password when the model has no shared default.
Admin password or Wi-Fi password?
The admin password opens the router’s settings. The Wi-Fi password connects a device to the wireless network. They may be different, and an ISP or cloud account can be separate again.
If the password does not work
Check capitalization and the device label, then use the manufacturer’s password-recovery instructions. A factory reset erases settings and may require ISP setup details; follow the instructions for your exact model.
Find your model’s manual →Sources & data
Router default-credential data from ssid.ai (Drumworks Ventures FZ), licensed CC BY 4.0. Adapted, organized and supplemented by Manuals+. The data is provided as is; manufacturers and ISPs can change defaults.
Additional factual entries: Austin Songer’s credential list and Clint Milner’s credential list. Each table entry links to its supporting source. Updated 2026-10-16.