Arris Router Login

Arris (now CommScope) makes both consumer retail products under the SURFboard brand and ISP-deployed gateway hardware for Comcast, AT&T, Cox, and Frontier. These two product lines work very differently and have different admin IPs — a common source of confusion. If Arris sent you here because your ISP gave you the gateway, scroll down to the ISP gateway section. If you bought your own SURFboard from Amazon or a store, the first section covers you.

SURFboard Router Admin: 192.168.0.1
SURFboard modem-only (diagnostics): 192.168.100.1  |  ISP gateways: varies by model  |  Credentials: admin / password

SURFboard Product Lines

SeriesWhat It IsAdmin IPCredentials
SBG (SURFboard modem-router)DOCSIS cable modem + WiFi router combined. One box handles everything.192.168.0.1admin / password
SB / SBV (modem only)Cable modem only — no WiFi, no routing. Connect your own router to its Ethernet port.192.168.100.1 (diagnostics)admin / password
S3GX (mesh router)Standalone WiFi 6 mesh router — no modem. Works with any modem or gateway.192.168.0.1admin / password

SBG Series (Modem + Router) Login

The SBG series are Arris's combination modem-routers. One box connects to the cable line and also creates your WiFi network. Popular models: SBG6400, SBG7400AC2, SBG8300.

  1. Connect to the SURFboard WiFi or via ethernet
  2. Open a browser and go to http://192.168.0.1
  3. Username: admin   Password: password
  4. The interface shows modem signal levels, router settings, and WiFi configuration in one dashboard

After logging in, the first thing to do is change the admin password under Basic → Gateway Function → Change Password. The universal "password" default means anyone on your WiFi can access the admin panel.

ISP-Deployed Arris Gateways

ISPs deploy Arris hardware under their own branding, often with customised firmware that changes the admin address and credentials. The most common deployments:

ModelISPAdmin IPPassword
TG3482G (Xfinity xFi Gateway)Comcast / Xfinity10.0.0.1admin / password
TG1682G (Xfinity)Comcast / Xfinity10.0.0.1admin / password
TG862G / TG862ATime Warner / Spectrum192.168.0.1admin / password
NVG468MQ / NVG599AT&T U-verse192.168.1.254Device Access Code on label
BGW210 / BGW320AT&T Fiber192.168.1.254Device Access Code on label
DG3450 (Cox)Cox Communications192.168.0.1admin / password
Xfinity Arris gateways use 10.0.0.1: If your Arris is from Comcast, don't try 192.168.0.1 — the xFi Gateway firmware moves the admin to the 10.0.0.x range. See the Xfinity login guide for details.

SB Series — Modem Diagnostics Only

The SB (SURFboard) series — SB6183, SB6190, SB8200 — are cable modems without WiFi or routing. Their interface at 192.168.100.1 is read-only diagnostics: downstream signal power, upstream power, SNR, DOCSIS channel bonding, and event logs. You cannot change WiFi settings here because these modems have no WiFi. Connect a separate router to the SB modem's ethernet port for your network.

Change WiFi Password (SBG series)

  1. Log in at 192.168.0.1
  2. Go to Wireless → Primary Network
  3. Update the Network Password field for both 2.4 GHz and 5 GHz
  4. Click Save Settings

Troubleshooting

ProblemFix
192.168.0.1 not loading on Comcast unitYour ISP-branded Arris uses 10.0.0.1 — see the Xfinity guide
"password" rejectedCheck if this is an ISP unit — AT&T models use the Device Access Code on the label
192.168.100.1 shows no WiFi settingsCorrect — SB modems are modem-only, no WiFi. Use 192.168.0.1 on an SBG combo unit instead.
Forgot admin password on SBGFactory reset: press reset button on back 10+ seconds