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.

6 hosts · 267 ms

HostCertsFirst seenLast seenDNS
credila.com 10 2025-09-23 2026-09-17 ok
*.credila.com 13 2025-08-28 2026-09-17 —
service.credila.com 12 2026-05-11 2026-09-06 ok
ithelpdesk.credila.com 8 2026-05-04 2026-08-30 ok
*.internal.credila.com 8 2025-09-15 2026-08-31 —
elink.mailer.credila.com 64 2026-04-11 2026-09-30 ok

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