Fascinating, they embed a tracking pixel of: http://onion.[SOME_NUMERIC_ID].pixel.archive.today/pixel.gif http://onion.[SOME_NUMERIC_ID].pixel.archive.today/pix

Fascinating, they embed a tracking pixel of: http://onion.[SOME_NUMERIC_ID].pixel.archive.today/pixel.gif http://onion.[SOME_NUMERIC_ID].pixel.archive.today/pixel.gif for Tor endpoint (archivecaslytosk.onion) connections but https:// https:// [YOUR_IP].[COUNTRY_CODE].[SHORT_ALPHANUMERIC_ID].[SOME_NUMERIC_ID].pixel.archive.is/pixel.gif for regular (archive.is/archive.fo/archive.today/etc) connections. So at least this lets archive.is correlate your IP with your DNS server (which must pass EDNS Client Subnet to get any meaningful response, this is the reason why Cloudflare DNS is not that great for accessing archive.is; more: https://news.ycombinator.com/item?id=19828317 https://news.ycombinator.com/item?id=19828317).