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.

9 hosts · 261 ms

HostCertsFirst seenLast seenDNS
amararaja.com 30 2025-08-06 2026-09-25 ok
arpulse.amararaja.com 2 2026-08-02 2026-08-02 ok
amararajaalumni.amararaja.com 4 2026-04-12 2026-08-10 ok
arpulse-api.amararaja.com 2 2026-08-02 2026-08-02 ok
amararajasampark.amararaja.com 5 2026-05-12 2026-09-09 ok
testepms.amararaja.com 2 2026-08-02 2026-08-02 ok
api.uat.amararaja.com 2 2026-05-15 2026-05-15 ok
arit.amararaja.com 7 2026-05-27 2026-09-22 ok
www.amararaja.com 12 2025-08-06 2026-07-21 ok

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