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 · 320 ms

HostCertsFirst seenLast seenDNS
cloud.e.wickedgoodcupcakes.com 1 2025-11-06 2025-11-06 ok
image.e.wickedgoodcupcakes.com 2 2025-12-11 2026-02-09 ok
click.e.wickedgoodcupcakes.com 5 2026-04-14 2026-09-15 ok
view.e.wickedgoodcupcakes.com 2 2026-04-09 2026-09-10 ok

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