NETGEAR CM600, User Manual

Hardware and Internet Setup 

10

High Speed Cable Modem 

Note:

Your cable Internet provider’s contact information might change. You 
can also find the contact information in your monthly Internet service 
billing statement.

2. 

If you are unable to activate your Internet service using the instructions on your cable 

Internet provider’s website, call your cable Internet provider and do the following:

a.

When asked, provide your account information and provide the cable modem’s model 

number, which is CM600, serial number, and MAC address.

The serial number and MAC address are on the label on the cable modem, which is 
on the bottom of the cable modem.

b. 

Wait for your cable Internet provider to confirm that your cable modem is active.

c. 

If you do not get an Internet connection with the cable modem, ask your cable 

Internet provider to look for your cable modem online, and do one of the following 

depending what your cable Internet provider tells you about your cable modem:

•

If the cable modem is not visible, your cable Internet provider 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 your cable Internet provider, reboot the cable 
modem. Check your online status again.

Activate Your Internet Service with Comcast XFINITY

If you use Comcast XFINITY, you can set up Internet service by using Comcast XFINITY’s 
self-activation process. If you are unable to self-activate your cable modem, call Comcast 
XFINITY customer service. After you complete the setup, perform a speed test.

Comcast XFINITY

http://www.comcast.com/activate
http://www.XFINITY.com/internetsetup
http://www.XFINITY.com/internetsupport

1-800-XFINITY (1-800-934-6489)
For more information, see 

Activate Your Internet Service with Comcast 

XFINITY 

on page

10.

Cox

https://activation.cox.net/selfactivation/start.cox

1-888-556-1193

Mediacom

https://maestro.mediacomcc.com/walledgarden/page/login.jsp

1-844-2SIMPLE (1-844-274-6753)

Time Warner Cable

https://elb02.activatemymodem.com/authentication

1-800-892-2253

Cable Internet Provider Contact Information