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.

14 hosts · 270 ms

HostCertsFirst seenLast seen
examine.com 22 2026-04-16 2026-09-12
*.examine.com 17 2026-04-16 2026-09-03
kodama.examine.com 12 2026-04-23 2026-08-19
email.mg.examine.com 5 2026-05-27 2026-09-24
staging.examine.com 5 2026-05-01 2026-09-03
i.examine.com 4 2026-04-21 2026-09-08
api.examine.com 4 2026-05-24 2026-08-02
api-internal.examine.com 4 2026-04-19 2026-09-06
admin.examine.com 4 2026-05-24 2026-08-02
help.examine.com 5 2026-04-24 2026-08-24
forms.examine.com 5 2026-04-18 2026-07-16
connect.examine.com 3 2026-06-24 2026-09-05
www.examine.com 5 2026-05-10 2026-09-11
library.examine.com 5 2026-05-10 2026-09-13

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