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.

11 hosts · 480 ms

Download CSV
HostCertsFirst seenLast seen
getspiffy.com 18 2025-12-09 2026-10-13
*.getspiffy.com 20 2025-12-09 2026-10-13
status1.getspiffy.com 5 2026-04-27 2026-08-25
vehicle2.getspiffy.com 14 2026-04-19 2026-10-14
status2.getspiffy.com 5 2026-05-08 2026-09-05
store.getspiffy.com 5 2026-04-27 2026-09-14
cw-staging.getspiffy.com 4 2026-04-21 2026-09-08
blog.getspiffy.com 13 2026-04-19 2026-10-13
info.getspiffy.com 16 2026-04-18 2026-10-12
status.getspiffy.com 5 2026-05-17 2026-09-14
www.getspiffy.com 15 2026-04-19 2026-10-13

Programmatic access: API GET /v1/hosts/getspiffy.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/getspiffy.com.