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.

4 hosts · 307 ms

HostCertsFirst seenLast seenDNS
cloud.sc.mufg-terrace.com 1 2026-01-15 2026-01-15 ok
image.sc.mufg-terrace.com 5 2025-06-28 2026-09-06 ok
click.sc.mufg-terrace.com 1 2026-01-15 2026-01-15 ok
view.sc.mufg-terrace.com 1 2026-01-15 2026-01-15 ok

Programmatic access, with DNS A records: API GET /v1/hosts/sc.mufg-terrace.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/sc.mufg-terrace.com.