Is this domain’s IP on a blocklist?

Check the domain’s address against public DNS blocklists.

Try cloudflare.com, github.com. One domain in, one answer out. No account needed.
CONTINUOUS INTERNET TELEMETRY24H DRIFT9,664 material changesacross 8,235 domains · 24h to ~2h ago · +2,430 vs yesterdayDNS DRIFT86 domains changed DNS providertop destination koaladns.comEMAIL DRIFT3 domains switched email provider24hREGISTRAR DRIFT1 changed registrar24hNOW616 curated domains not reachablelast probe, steadySITE ERRORS17,464 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 79,571 sites429 rate-limit / 403 bot-block, a posture signal