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.

5 hosts · 294 ms

HostCertsFirst seenLast seenDNS
condenast.com.mx 13 2025-10-06 2025-10-23 ok
*.condenast.com.mx 13 2025-10-06 2025-10-23 —
c.condenast.com.mx 1 2026-05-06 2026-05-06 ok
link.condenast.com.mx 5 2026-04-30 2026-08-28 ok
eventos.condenast.com.mx 5 2026-04-30 2026-08-28 ok

Programmatic access, with DNS A records: API GET /v1/hosts/condenast.com.mx (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/condenast.com.mx.