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.

7 hosts · 308 ms

HostCertsFirst seenLast seenDNS
grupolaquinta.com 2 2025-07-22 2026-06-20 ok
*.grupolaquinta.com 4 2025-07-22 2026-06-21 —
rentals.grupolaquinta.com 3 2026-06-22 2026-08-21 ok
owners.grupolaquinta.com 3 2026-06-29 2026-08-28 ok
img.news.grupolaquinta.com 14 2026-05-16 2026-09-11 ok
r.news.grupolaquinta.com 4 2026-05-12 2026-07-31 ok
test.grupolaquinta.com 2 2025-07-23 2026-06-21 ok

Programmatic access, with DNS A records: API GET /v1/hosts/grupolaquinta.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/grupolaquinta.com.