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.

10 hosts · 193 ms

HostCertsFirst seenLast seen
mytraffictickets.com 27 2026-04-24 2026-08-30
*.mytraffictickets.com 17 2026-04-24 2026-08-21
new1.mytraffictickets.com 5 2026-05-10 2026-09-10
dev-v2.mytraffictickets.com 5 2026-04-24 2026-08-27
api.mytraffictickets.com 5 2026-05-28 2026-09-28
stage-api.mytraffictickets.com 5 2026-06-07 2026-09-07
app.mytraffictickets.com 5 2026-04-30 2026-08-30
old-app.mytraffictickets.com 5 2026-04-25 2026-08-24
www.old-app.mytraffictickets.com 5 2026-04-25 2026-08-24
www.mytraffictickets.com 10 2026-04-30 2026-08-30

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