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.

12 hosts · 229 ms

HostCertsFirst seenLast seen
korzo.com 4 2026-04-19 2026-08-17
video.korzo.com 8 2026-05-11 2026-09-06
stg-video.korzo.com 12 2026-05-11 2026-09-06
dev-video.korzo.com 8 2026-05-11 2026-09-06
go.korzo.com 5 2026-06-06 2026-10-04
p.korzo.com 6 2026-05-02 2026-09-14
dev-p.korzo.com 10 2026-04-24 2026-09-13
s.korzo.com 3 2026-05-13 2026-08-28
dev-s.korzo.com 3 2026-05-09 2026-08-23
status.korzo.com 5 2026-05-15 2026-09-12
trust.korzo.com 10 2026-05-22 2026-09-17
calendly.korzo.com 8 2026-05-09 2026-09-04

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