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26 documented releases

Fixed updates

Every meaningful user-visible change, fix and security improvement — documented clearly and sorted newest first.
  1. May 5, 2026

    • Fixed

      Dashboard responsive polish at 375px

      Fixed cramped layouts on /monitors, /alerts and /settings on mobile. Run-history rows wrap cleanly, page headers stack instead of squeezing, and long domain names no longer push status badges off-screen.

      Open monitors
  2. April 30, 2026

    • Fixed

      WHOIS lookups rewritten — RDAP-first, never throws

      Defeated three layered failure modes: Node's undici keepalive pool returning stale connections to Verisign RDAP, the legacy port-43 TCP map missing newer TLDs, and unhandled exceptions causing 500s. WHOIS now degrades to a structured stub instead of a crash.

      Try WHOIS

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Fixed updates — CheckFast Changelog | CheckFast