Community Forum

How to override the wonky DNS

brightxy
New Poster

How to override the wonky DNS

Hello all,

 

I've been constantly suffering the wonky DNS service that Xfinity provides, especially during this special pendamic situation. At random time of the day I can only connect to a handful of websites including Google and Youtube, which I conclude to be a DNS issue

Here's what I've tried to fix this:

1. I have my own modem/router (NetGear C3700-100NAS), I tried to set DNS in its setting to Google DNS (8.8.8.8, 8.8.4.4)

2. I have also tried to force DNS in my PC's network setting

However both way when I do nslookup, it still shows Default Server cdns01.comcast.net

 

Appretiate any suggestion/thoughts, thank you in advance.

EG
Expert

Re: How to override the wonky DNS

You can't if you are using a Comcast supplied gateway device. You can't even override it in the individual network client devices because their gateways no longer act as DNS forwarders /relays.



I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark the post as Best Answer!
brightxy
New Poster

Re: How to override the wonky DNS

Thank you for replying, but as mentioned I'm using my own modem. I was finally able to identify the reason, the default DNS that was preventing me from using Google DNS was the IPv6 DNS, swaped it to Google IPv6 (2001:4860:4860::8888 and/or 2001:4860:4860::8844.) and now it is showing Google everywhere

EG
Expert

Re: How to override the wonky DNS

Glad you got it figured out. Thread now being closed.



I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark the post as Best Answer!