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.

9 hosts · 343 ms

HostCertsFirst seenLast seenDNS
paf.se 12 2026-05-09 2026-09-04 ok
*.paf.se 12 2026-05-09 2026-09-04 —
id.paf.se 4 2026-04-07 2026-08-05 ok
maintenance.paf.se 10 2026-04-30 2026-08-26 ok
gtm.paf.se 5 2026-04-18 2026-09-27 ok
resources.paf.se 6 2026-04-30 2026-08-26 ok
colossus.paf.se 2 2025-07-08 2026-06-08 ok
support.paf.se 7 2026-05-23 2026-08-20 ok
identity.paf.se 4 2026-04-09 2026-08-07 ok

Programmatic access, with DNS A records: API GET /v1/hosts/paf.se (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/paf.se.