I agree considering the responses I'm seeing from the one working server. If I had to guess randomly at a cause, I would speculate that all their nameservers b

I agree considering the responses I'm seeing from the one working server. If I had to guess randomly at a cause, I would speculate that all their nameservers besides 155.178.199.16 are behind a load balancer that uses checking for IN A faa.gov as a health check and someone deleted that record, so, all servers fell out of the load balancer. 50c says that their method of propagating new records relies on their DNS working so someone is having a fun night fixing that.