Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts, first/last seen and live DNS status.

3 hosts · 302 ms

HostCertsFirst seenLast seenDNS
image.e.lexuscommunications.net 2 2026-01-06 2026-05-23 ok
click.e.lexuscommunications.net 2 2025-07-22 2026-07-10 ok
view.e.lexuscommunications.net 2 2025-07-22 2026-07-09 ok

Programmatic access, with DNS A records: API GET /v1/hosts/e.lexuscommunications.net (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/e.lexuscommunications.net.