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.

7 hosts · 285 ms

HostCertsFirst seenLast seenDNS
hanter.se 9 2026-05-02 2026-09-26 ok
*.hanter.se 5 2026-05-02 2026-09-26 —
pwa.hanter.se 6 2026-04-14 2026-08-24 ok
vmc.hanter.se 2 2026-08-24 2026-08-24 ok
phone.hanter.se 6 2026-04-14 2026-08-24 ok
staging.hanter.se 5 2026-05-20 2026-09-17 ok
www.hanter.se 4 2026-05-25 2026-07-24 ok

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