Checked from play.sdteam.io every minute. Sites are fetched in small batches; anything failed or slow is re-tested on its own straight away. A site turns red only after failing 2 checks in a row (1 minute apart); "re-checking" means it has failed once. Hover a time to see DNS / connect / TLS / server split and the IP used. BLOCKED = Wordfence/Cloudflare blocked the checker, site is probably up. Homepage only - use the full health sweep for page-level issues.