>>sillys+(OP)
Check your DNS, there are issues using Cloudflare to reach archive.{is | li | today | etc }
Google DNS and others work where Cloudflare does not.
>>defros+c
Oof. I do indeed have my router configured to use 8.8.8.8 with 1.1.1.1 as a backup.
Whenever I plugged in 1.1.1.1 I had a sneaking feeling of "maybe this is a bad idea" based on random comments claiming problems on HN, but this is the first I've been bitten by it.