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.

5 hosts · 274 ms

HostCertsFirst seenLast seen
lens.me 5 2026-05-16 2026-09-13
mcprod.lens.me 5 2026-05-16 2026-09-13
mcstaging.lens.me 5 2026-05-26 2026-09-23
link.emarsys.lens.me 5 2026-05-02 2026-08-30
www.lens.me 5 2026-05-16 2026-09-13

Programmatic access: API GET /v1/hosts/lens.me (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/lens.me.