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.

17 hosts · 300 ms

HostCertsFirst seenLast seen
dormy.com 20 2025-08-04 2026-10-08
*.dormy.com 17 2026-06-01 2026-10-08
member-b2b.dormy.com 5 2026-04-24 2026-08-22
static.dormy.com 1 2025-12-24 2025-12-24
www.static.dormy.com 1 2025-12-24 2025-12-24
sync.dormy.com 3 2026-03-18 2026-09-01
www.sync.dormy.com 3 2026-03-18 2026-09-01
member-fi.dormy.com 5 2026-04-24 2026-08-22
integration-api.dormy.com 1 2025-11-27 2025-11-27
www.integration-api.dormy.com 1 2025-11-27 2025-11-27
member-dk.dormy.com 5 2026-04-24 2026-08-22
internal.dormy.com 1 2026-01-05 2026-01-05
www.internal.dormy.com 1 2026-01-05 2026-01-05
medlem.dormy.com 5 2026-04-24 2026-08-22
member-no.dormy.com 5 2026-04-24 2026-08-22
help.dormy.com 14 2026-04-10 2026-09-21
www.dormy.com 3 2025-08-04 2026-08-10

Programmatic access: API GET /v1/hosts/dormy.com (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.com.