citadel.com .com crawl First seen 2026-04-11 · Last seen 2026-05-14 · error HTTP 403 crawled 2026-04-23 5 attempts US · 104.18.31.76 · AS13335 Cloudflare, Inc. Reputation 90/100 crawl error cloudflare bot challenge Certificates Loading certificate Linked from (6) battlecode.org×2 andovermathopen.com×2 nsmanoj.com×2 calhacks.io×2 compsoc.net×2 archim.org.uk×1