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 · 309 ms

HostCertsFirst seenLast seenDNS
shrirampistons.com 2 2025-08-22 2026-09-18 ok
*.shrirampistons.com 2 2025-08-22 2026-09-18 —
itsupport.shrirampistons.com 10 2026-04-27 2026-08-23 ok

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