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.

8 hosts · 237 ms

Download CSV
HostCertsFirst seenLast seen
godmarc.com 33 2026-05-17 2026-10-03
*.godmarc.com 31 2026-05-17 2026-10-03
dns-api.godmarc.com 5 2026-05-09 2026-09-07
email.godmarc.com 5 2026-05-24 2026-09-21
learn.godmarc.com 1 2026-09-22 2026-09-22
mta-sts.godmarc.com 1 2026-09-22 2026-09-22
dnstwist.godmarc.com 5 2026-05-10 2026-09-07
www.godmarc.com 2 2026-09-15 2026-09-15

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