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.

13 hosts · 337 ms

HostCertsFirst seenLast seenDNS
ayalocums.com 15 2026-02-20 2026-08-25 ok
*.ayalocums.com 12 2026-02-20 2026-08-25 —
www-stage.ayalocums.com 3 2026-06-04 2026-08-04 ok
data.analytics.ayalocums.com 6 2026-04-18 2026-09-18 ok
content.analytics.ayalocums.com 5 2026-04-18 2026-09-21 ok
forms.ayalocums.com 10 2026-05-03 2026-08-29 ok
mta-sts.ayalocums.com 5 2026-05-13 2026-10-03 ok
www-int.ayalocums.com 3 2026-06-03 2026-08-04 ok
www-cint.ayalocums.com 5 2026-04-22 2026-08-24 ok
www-sint.ayalocums.com 5 2026-04-22 2026-08-24 ok
www-hot.ayalocums.com 3 2026-06-04 2026-08-04 ok
www-dev.ayalocums.com 3 2026-06-03 2026-08-04 ok
www.ayalocums.com 3 2026-06-08 2026-08-09 ok

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