Archive.is is very interesting. I was checking and they block (by responding back with 127.0.0.3):

- 1.1.1.1

- Neustar DNS

- AdGuard DNS

But they don't block Quad9 or CleanBrowsing that also do not send the EDNS subnet. Very curious way of blocking itself out of the Internet. OpenDNS blocks it (sends to their block page):

https://dnsblacklist.org/?domain=archive.is

Would love to hear from someone from archive.is what is going on.