Visitor

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1 Message

Friday, March 6th, 2026 8:48 PM

Check eligibility of used cable modem

Is there a way to verify whether a previously-used cable modem is eligible to connect to Xfinity? I understand that in some cases, the modem might already be associated with another customer, making it more difficult to re-use.

I can provide the HFC MAC address of the modem in question.

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Official Employee

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55 Messages

12 hours ago

@kanishka42   First, thank you for choosing Xfinity as your service provider. I would be more than happy to assist you today. Yes, we can check the device's eligibility using the MAC address.  To send a "Direct Message" to Xfinity Support: Go to xfinityforums.com
Click "Sign In" if necessary
Click the "Direct Messaging" icon 
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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