🏢 Service Provider Gateway Hub
CenturyLink / Quantum Fiber Gateway Login (192.168.0.1)
Default login credentials, IP passthrough, bridge mode instructions, and factory reset procedure for CenturyLink C4000LG / C4000XG Wi-Fi 6 Router.
Verified ISP Configuration
Gateway IP: 192.168.0.1 • User: admin • Pass: Admin / Configuration password on sticker
The default login is 'admin' and the password is the unique 'Admin Password' on the side label.
Gateway Parameters & Access Details
Internet Service Provider
CenturyLink / Quantum Fiber
Hardware Models
CenturyLink C4000LG / C4000XG Wi-Fi 6 Router
Default Gateway IP
192.168.0.1
Default Username
admin
Default Password
Admin / Configuration password on sticker
Official Companion App
CenturyLink App / Quantum Fiber App
How to Enable Bridge Mode or IP Passthrough
Navigate to http://192.168.0.1 > Advanced Setup > WAN Settings > Select 'Transparent Bridging'. If on CenturyLink Fiber, configure your 3rd-party router with VLAN ID 201 on the WAN port and enter your PPPoE credentials.
Physical Factory Reset Procedure
Press and hold the Reset button on the side for 15 seconds until the status ring flashes amber.
⚡ Test Connection to CenturyLink / Quantum Fiber Gateway
Target: 192.168.0.1Verify if your device can reach the gateway administration server on 192.168.0.1: