Real-time DNS + SSL checks
from 12 global resolvers.
Built for the engineer that needs to know now: is the record live everywhere, is the cert healthy, is HTTP/2 + HSTS configured. No login. No tracking. Just the data.
Each record type is queried against all 12 resolvers concurrently. Mismatched answers surface as partial propagation. Identical sets pass as propagated.
Issuer, SAN list, validity window, signature algorithm, public key size, TLS 1.0→1.3 support, HTTP/2, OCSP stapling and HSTS — one panel.
Every check generates a clean, SEO-indexed permalink so you can drop it in a Slack thread or a postmortem doc without screenshotting a terminal.
| STATUS | RESOLVER | IP | VALUE | LATENCY |
|---|---|---|---|---|
| [OK] | Cloudflare | 1.1.1.1 | 93.184.216.34 | 24ms |
| [OK] | 8.8.8.8 | 93.184.216.34 | 31ms | |
| [OK] | Quad9 | 9.9.9.9 | 93.184.216.34 | 47ms |
| [OK] | OpenDNS | 208.67.222.222 | 93.184.216.34 | 38ms |
| [WARN] | Yandex | 77.88.8.8 | — (not propagated yet) | 122ms |