Comcast dns 75.75.75.75 returns wrong record

nslookup www.lasercutlawncare.com resolves to the correct IP address only when we are not in the office. it shows a different IP when we are behind the firewall. the correct address is 159.203.72.7 but inside the network it resolves to 104.225.8.29 regardless of the DNS server queried. there are no rules on the firewall, and there is no internal network DNS server.

When looking into it further, Meraki stated: As discussed on the call, the wireshark packet capture shows that DNS Query for the mentioned website is reaching to the DNS server and its the server that is responding back from the incorrect IP address i.e., 104.225.8.29 and 104.225.8.28.

How do we resolve this?

Here is a picture: https://share.cleanshot.com/OMneze

Responses

Comcast_ThomasC

Official Employee

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52 Messages

2 years ago

Hello @user_9ed96b! We recommend removing your IP addresses from public view for the network security of your business. Could you please send our team a direct message with your full name and full address? To send a "Peer to peer" ("Private") message:

In the top right corner, you'll see a little chat icon near the bell icon. Click the direct message icon
Click the "New message" (pencil and paper) icon
In the 'To' line, type "Xfinity Support" there. 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. An official employee, such as myself or whoever is first available, will respond. Thanks!

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user_9ed96b

New Contributor

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2 Messages

2 years ago

There is no "Xfinity Support" user. There is no "comcast support" user either. there is a user called "support" but he set up his account in 2014 and has no actvity.

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