192.168.100.1 - Cable Modem & ONT Login

192.168.100.1 is the universal diagnostic IP address for DOCSIS cable modems (Arris SURFboard, Motorola, Netgear CM series) and Fiber ONT terminals.

192.168.100.1 Gateway Admin Access

To access your router administration panel, enter the IP into your web browser or click the direct login button below:

http://192.168.100.1
Direct Login (HTTP) Secure Login (HTTPS)
* Make sure your device is connected to your router via Wi-Fi or Ethernet cable before clicking.
IP Classification
Class C Private IPv4
Default Subnet Mask
255.255.255.0
Default Username
admin
Default Password
admin
192.168.100.1 provides diagnostic metrics including downstream/upstream signal-to-noise ratio (SNR), channel power levels (dBmV), uncorrectable codewords, and event logs from your internet service provider.

Router Brand & Model Password List for 192.168.100.1

Select your brand or type your model below to discover factory-assigned login credentials:

Brand Model Protocol Default Username Default Password Action
Netgear CM1000 DOCSIS 3.1 Modem HTTP admin password
Huawei HG8245H GPON Optical Terminal HTTP telecomadmin admintelecom
Arris SURFboard SB8200 DOCSIS 3.1 HTTP admin password

Important Security Tips for 192.168.100.1

  • Change Factory Password Immediately: Factory passwords like admin or password are publicly documented in databases like this one. Change your administrator password on your first login.
  • Enable WPA3 or WPA2-AES: Ensure your Wi-Fi encryption is set to WPA3-Personal or WPA2-AES. Avoid legacy WEP or TKIP algorithms which can be cracked in minutes.
  • Disable WPS (Wi-Fi Protected Setup): WPS PINs are susceptible to brute-force Reaver attacks. Turning off WPS in the Wireless settings protects your network even if someone has physical proximity.

Frequently Asked Questions about 192.168.100.1

Can I access 192.168.100.1 through my router? ▼
Yes! Most consumer routers will forward traffic destined for 192.168.100.1 directly to the upstream WAN modem port.