Find every subdomain
of a domain.

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

10 hosts · 238 ms

HostCertsFirst seenLast seen
dormy.se 1 2025-12-19 2025-12-19
intra.dormy.se 1 2025-11-20 2025-11-20
www.intra.dormy.se 1 2025-11-20 2025-11-20
opto-prod.dormy.se 1 2025-12-01 2025-12-01
www.opto-prod.dormy.se 1 2025-12-01 2025-12-01
password.dormy.se 1 2025-12-16 2025-12-16
www.password.dormy.se 1 2025-12-16 2025-12-16
webhook.dormy.se 1 2026-06-04 2026-06-04
www.webhook.dormy.se 1 2026-06-04 2026-06-04
www.dormy.se 1 2025-12-19 2025-12-19

Programmatic access: API GET /v1/hosts/dormy.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/dormy.se.