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.

3 hosts · 240 ms

HostCertsFirst seenLast seen
paymentlabs.com 4 2026-06-02 2026-10-04
*.paymentlabs.com 7 2026-06-13 2026-09-21
www.paymentlabs.com 5 2026-05-31 2026-09-29

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