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.

11 hosts · 352 ms

HostCertsFirst seenLast seenDNS
kungstanden.se 7 2026-04-25 2026-08-24 ok
*.kungstanden.se 7 2026-04-25 2026-08-24 —
boka.kungstanden.se 20 2026-04-29 2026-08-25 ok
g.kungstanden.se 4 2026-04-24 2026-10-01 ok
booking.kungstanden.se 5 2026-04-29 2026-08-27 ok
ai.kungstanden.se 6 2026-06-03 2026-10-01 ok
api.kungstanden.se 4 2026-06-05 2026-10-04 ok
hej.kungstanden.se 16 2026-04-22 2026-08-18 ok
m.kungstanden.se 20 2026-05-16 2026-09-11 ok
go.kungstanden.se 8 2026-04-22 2026-08-18 ok
meet.kungstanden.se 12 2026-04-30 2026-08-26 ok

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