ipv4 went down. 90% of the internet is down

on my 1 week having service, i lost internet. went to the app it said i had no internet so i rebooted it. it came back up, but my phones could not browse. however, my fire stick was able to load netflix just fine.

tested 4 different devices, all could open google, netflix, wikipedia, but almost nothing else.

after further testing i concluded that only true ipv6 compatible websites are loading.

support was clueless, could not even tell me which DNS ip tmhi uses. had to figure myself that it issues one ipv6 dns and then google dns.

if i do "nslookup anysite.tld" it uses the ipv6 dns and it resolves, but i can't connect to any of the results. if i do something like nslookup - 8.8.8.8 then it fails. I recently learned that sometimes browsers refuse to connect to a website via ipv6 in certain conditions even if they have a working record, making the problem worse.

tried to reset the device and still same issue. has anyone seen this issue before? going to have to wait 3 days to get a reply. it's a good thing i didn't cancel at&t, i need to work tomorrow. i got a ticket number, but support is clueless. i requested to talk to a real engineer and there isn’t one available and might not be for 3 days