Proton VPN is free without data caps, and has plenty of US Servers that barely affect your latency. Id Suggest them over NORDVPN, and Proton has a awesome policy on data.
This is 100% a ATT Issue, but ATT also has a very asinine policy concerning your ability to change your DNS. it is literally the #1 complaint on their ATT Forums. People have gone to great lengths to change their DNS, but ATT ONT Fiber and UVerse modems will ACTIVELY hijack and re-redirect your DNS Change Requests back to ATT In-house DNS, and it really is TRASH.
I am ATT 5Gbit Fiber, and this issue started for me couple days ago.
From what I have gathered using some networking tools along with the help of "InDevNull" on 2042's Discord. One server in particular with AWS "ELB1-US-EAST" which is either the Cincinnati or Virginia Datacenter is dropping ALL packets. 100% loss
So this is either a BGP or Routing Tables issue, that AWS, EA/DICE and ATT are going to have to figure out. What is not coming through logically is why if that one server is having issues, its affecting ALL ATT users, so without a internal structuring diagram, there is no way to diagnose a BGP Failure if its stemming from that particular node.