Uptime
Follow reachability signals and certificate dates from the outside.
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Monitoring & uptime
HTTP availability
Timed status and keyword checks with anti-flap detection.
DNS resolution
Continuous mapping of A, AAAA, CNAME and MX records.
Firewall endpoint watch
External probes of expected or common TCP ports, plus an optional heartbeat if you configure a sender. Neither shows the appliance's internal health, and with no usable evidence the state is unknown rather than down.
SSL / TLS expiry
Tracks certificate expiry and warns before the observed expiry; cannot guarantee renewal.
TLS grading
Protocols, ciphers and chain analysis, graded A+ to F.
Domain expiry & integrity
RDAP/WHOIS tracking plus nameserver and delegation change detection.
Email setup & blocklist checks
Checks that your domain's mail records are in place and that it isn't on the Spamhaus or Barracuda blocklists. It does not test whether your email reaches the inbox.
Email authentication
SPF and DMARC on Standard; DKIM, MTA-STS, TLS-RPT and BIMI on Pro.
Search indexability
robots.txt and noindex header monitoring.
Homepage change detection
Compares homepage hashes and reports content changed; it does not confirm defacement.
Threat reputation
Looks your site up with Google Web Risk, falling back to Safe Browsing when that isn't available. If neither answers, the result is shown as unknown, not clean.
Passive web security
CSP, HSTS, XFO, cookie flags and mixed-content validation.
Independent cloud check
Optional separate evidence to compare with our own checks: a checker running on Cloudflare's network re-checks the targets you choose (up to 20) and reports back. It doesn't change your monitor status, uptime, grades or SLA — those come from the primary checks. You pair it in Settings, and it's one outside vantage point, not a worldwide probe network; when its evidence is missing or stale we say so.