Earlier quoted context omitted.
If you see your hosts file what the DNS used to show, does the server respond? That’s usually the real test.
I don't know, it's a good question. I don't have the IP addresses cached. NPR notes that the report is here [1], so if someone is trying to hide it, they're not doing a particularly good job. [1] https://repository.library.noaa.gov/view/noaa/61592
It seems to be maybe AWS, and manual IP action doesn't get anything.