Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts, first/last seen and live DNS status.

24 hosts · 308 ms

HostCertsFirst seenLast seenDNS
betfan.pl 31 2025-07-15 2026-10-01 ok
*.betfan.pl 31 2025-07-15 2026-10-01 —
promocja.betfan.pl 4 2026-05-20 2026-07-19 ok
grafana.betfan.pl 7 2026-05-20 2026-09-29 ok
otlp-rc.betfan.pl 3 2026-07-30 2026-09-29 ok
*.cms-backend.betfan.pl 16 2026-04-22 2026-08-18 —
otlp-prod.betfan.pl 3 2026-07-30 2026-09-29 ok
promocje.betfan.pl 4 2026-05-20 2026-07-19 ok
*.middleware.betfan.pl 9 2026-04-22 2026-08-18 —
m.betfan.pl 1 2026-09-29 2026-09-29 ok
sgtm.betfan.pl 3 2026-05-02 2026-08-17 ok
info.betfan.pl 8 2026-04-25 2026-08-21 nodata
*.info.betfan.pl 8 2026-04-25 2026-08-21 —
*.rc-app.betfan.pl 8 2026-05-26 2026-09-21 —
*.test-app.betfan.pl 8 2026-05-26 2026-09-21 —
*.cms.betfan.pl 16 2026-04-22 2026-08-18 —
partners.betfan.pl 10 2026-04-27 2026-09-28 ok
ass.betfan.pl 5 2026-05-08 2026-09-06 ok
mailpit.betfan.pl 4 2026-05-20 2026-07-19 ok
*.front.betfan.pl 16 2026-04-22 2026-08-18 —
promocjastart.betfan.pl 4 2026-05-08 2026-07-25 ok
grafana-test.betfan.pl 6 2026-07-29 2026-09-29 nxdomain
otlp-test.betfan.pl 3 2026-07-29 2026-09-27 ok
partners-test.betfan.pl 8 2026-04-27 2026-09-28 ok

Programmatic access, with DNS A records: API GET /v1/hosts/betfan.pl (API key for paging).

Shown here: hostnames with a certificate that is valid now or expired within the last 90 days. The full history since 2013 — hostnames whose last certificate expired earlier — is a Pro plan method: GET /v1/hosts-history/betfan.pl.