CONTINUOUS INTERNET TELEMETRY24H DRIFT3,240 material changesacross 2,667 domains · last 24h · +1,324 vs yesterdayDNS DRIFT43 domains changed DNS providertop destination cloudflare.com · +13 vs yesterdayEMAIL DRIFT9 domains switched email providertop destination google.comCERT DRIFT14 domains switched issuing CA24hNOW524 curated domains not reachable+45 vs yesterdaySITE ERRORS28,320 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 137,206 sites429 rate-limit / 403 bot-block, a posture signal

Is this domain’s certificate valid?

cloudflare.com

Try cloudflare.com, github.com. Free, no signup, bookmarkable.
Running a live ssl certificate check on cloudflare.com. This is a live reading, taken just now.