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.

4 hosts · 313 ms

Download CSV
HostCertsFirst seenLast seen
lazzarmexico.com 2 2025-06-24 2026-07-27
lazzarcom.lazzarmexico.com 5 2026-05-15 2026-09-14
www.lazzarcom.lazzarmexico.com 5 2026-05-15 2026-09-14
www.lazzarmexico.com 2 2025-06-24 2026-07-27

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