Equipment (Modems,Gateways)
Modems, Gateways, and Networking Devices
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Changed router IP address to now can't log into the router

I recently had to change to internal IP of my Comcast gateway, a CISCOModel dpc3941b, from to, and now I can't log into it from the Admin Tool Login page.


I needed to make this change to allow 3 other routers on our network visible as they all had fixed 192.168.1.x addresses.


How to reset the password without having to hard reset the router (which would undo the IP address change)?





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Official Employee

Re: Changed router IP address to now can't log into the router

Thanks so much for taking the time to reach out to us regarding your issues accessing the modem interface. I very much appreciate your patience and greatly apologize for the delay in our response. I know how important the services are to your business and we want to do all that we can to assist. I would love to assist with the modem access for you. Can you please reach out through private message with your first and last name, business service address and account number or phone number?

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