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 · 258 ms

HostCertsFirst seenLast seen
peesafe.com 13 2026-05-16 2026-09-24
mail.peesafe.com 15 2026-05-31 2026-10-11
production.email.peesafe.com 3 2026-06-08 2026-08-31
production.peesafe.com 5 2026-05-07 2026-10-14
help.peesafe.com 15 2026-05-23 2026-10-02
amp.peesafe.com 4 2026-05-19 2026-07-18
r.peesafe.com 5 2026-04-30 2026-10-07
ext.peesafe.com 3 2026-08-11 2026-08-11
www.peesafe.com 17 2026-05-16 2026-09-28
apply.peesafe.com 2 2025-07-24 2026-06-04

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