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.

11 hosts · 200 ms

HostCertsFirst seenLast seen
goodflair.com 25 2026-04-15 2026-09-19
*.goodflair.com 20 2026-04-15 2026-09-19
media.goodflair.com 2 2026-08-19 2026-08-19
academie.goodflair.com 1 2026-08-15 2026-08-15
mercure.goodflair.com 1 2026-09-07 2026-09-07
links.mail.goodflair.com 5 2026-05-27 2026-09-24
m.goodflair.com 5 2026-06-26 2026-09-10
app.goodflair.com 6 2026-05-19 2026-09-20
crisp.goodflair.com 4 2026-04-20 2026-08-18
media-dev.goodflair.com 4 2026-06-28 2026-08-26
www.goodflair.com 5 2026-04-27 2026-08-29

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