Visitor
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1 Message
No CM MAC number.
I’ve seen this question asked on the forum but it is NEVER ANSWERED! The person on the phone said I wouldn’t need a technician when I move that I could just take my old modem and it was “plug and play” his words. It is MOSTCERTAINLY NOT PLUG AND PLAY. Can I just get a straight answer on what number to input when the app asks for a CM MAC number? Mine has 3 max numbers but no cm mac. I tried all three and none worked.
flatlander3
Problem Solver
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1.5K Messages
2 years ago
Depends on what you got for gear. There might be a sticker on the bottom with a couple of bar codes. One is MAC, the other is CM MAC. Serial number might be there too. You'll need that as well.
On a Netgear, if you log into the local web interface ( http://192.168.0.1 or http://192.168.1.1 on some), it shows up on the main page if you click the "Advanced" tab. On Xfinity stuff, the local admin is at http://10.0.0.1 usually. username/password is admin/password by default. Might be buried somewhere else.
Could also be their app just won't let you do it because the CM MAC is already registered on their network. Might have to try the front door by calling 1.800.comcast and go through the menus, and perhaps burn a bunch of time trying to get a live person or two on the phone that has the ability and database access to do it. I had to do that to remove a device cooked by lightning, and activate another device.
Still another possibility is to hook up the coax cable. Power it on. Wait a few minutes for it to connect (watch the lights on it). Plug a laptop into it and try to bring up a website anywhere. You may end up at a "captive portal" asking you to log in, then you can enter the information. That may not be true in all markets anymore, and you might have an "already registered" database issue. * It's also possible the new place doesn't have an active line hooked up too, or the active line is another jack in the house somewhere.
(edited)
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XfinityArmand
Official Employee
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2.1K Messages
2 years ago
Hi there! Thanks so much for taking the time to reach out to Xfinity Support here on our Community Forum. We are glad to hear from you and happy to assist in any way that we can with your service concern. Just for clarification, if you are using Xfinity Issued equipment and are moving into a residence that has had Xfinity services 12 months prior to your move in date, yes, installation is most likely plug and play. While there is room for outliers to that statement, we can always get things up and running for you if needed. We are glad to take a closer look at this for you and make sure that we can get things up and running for you if needed. Please feel free to shoot us a private message with your ull name and service address so that we can get started.
To send a "direct message" / "private message" message to Xfinity Support:
• Click "Sign In" if necessary
• Click the "Direct Message" icon or https://forums.xfinity.com/direct-messaging
• Click the "New message" (pencil and paper) icon
• The "To:" line prompts you to "Type the name of a person". Instead, type "Xfinity Support" there
• - As you are typing a drop-down list appears. Select "Xfinity Support" from that list
• - An "Xfinity Support" graphic replaces the "To:" line
• Type your message in the text area near the bottom of the window
• Press Enter to send it
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