https://community.cloudflare.com/t/archive-is-error-1001/182...
> Nameservers responsible for archive.is (ben.archive.is, anna.archive.is) are returning answers tailored to the IP address of the requestor.
And indicate that anyone who knows how to contact archive.is can ask them to resolve the issue:
> If you have a contact on the domain owner, you can ask them to fix this.
EDIT: This is knowingly blocked by archive.is. Reasoning and discussion elsewhere in post comments. No need to contact archive.is about it, they’re clearly aware.