Activate your Internet service with XFINITY
Set up Internet service by using XFINITY’s self-activation process. If you are unable to
self-activate your cable modem, call XFINITY customer service. After you complete the
setup, perform a speed test.
Before you start the self-activation process, make sure to collect your account number,
account phone number, and login information (your email address or user name and
To activate your Internet connection with XFINITY’s self-activation process:
1. Close all web browsers.
2. Launch a web browser.
You are redirected to the XFINITY self-activation page. If you are not redirected to
the XFINITY self-activation page, visit https://register.xfinity.com/.
3. Provide your XFINITY credentials and complete the self-activation process.
This process might take up to 15 minutes, during which the cable modem reboots
a few times.
4. If you are unable to activate your cable modem using the XFINITY self-activation
process, call XFINITY customer service at 1-800-XFINITY (1-800-934-6489) and do
a. When asked, provide your account information and provide the cable modem’s
model number and MAC address, which are on the product label on the cable
For more information, see Label on page 9.
b. Wait for XFINITY to confirm that your cable modem is active.
•If the cable modem is not visible, XFINITY can give you instructions to verify
why the cable modem does not connect with your high-speed Internet service.
•If the cable modem is visible to XFINITY, reboot the cable modem. Check
your online status again.
Perform a speed test
To determine the accurate Internet speed, visit the speed test website of your cable
Internet provider and perform a speed test.
If your actual speed is lower than your subscribed speed, contact your cable Internet
User Manual13Hardware Setup
High Speed Cable Modem