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.

9 hosts · 271 ms

HostCertsFirst seenLast seen
friendlydiamonds.com 21 2026-04-30 2026-10-05
*.friendlydiamonds.com 15 2026-06-08 2026-10-05
backend.friendlydiamonds.com 2 2026-07-16 2026-07-16
g.friendlydiamonds.com 10 2026-04-19 2026-08-15
i.friendlydiamonds.com 1 2026-10-07 2026-10-07
fwtrack.friendlydiamonds.com 5 2026-04-28 2026-08-26
elink.friendlydiamonds.com 37 2026-05-13 2026-10-12
assets.friendlydiamonds.com 14 2026-04-17 2026-10-11
delivery.friendlydiamonds.com 3 2026-05-07 2026-08-29

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