Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

9 hosts · 250 ms

HostCertsFirst seenLast seen
etatpur.com 3 2026-02-02 2026-10-08
*.etatpur.com 3 2026-02-02 2026-10-08
azure-back-prod.etatpur.com 3 2026-02-02 2026-10-08
azure-front-prod.etatpur.com 3 2026-04-20 2026-10-08
azure-back-preprod.etatpur.com 3 2026-02-02 2026-10-08
azure-front-preprod.etatpur.com 3 2026-02-02 2026-10-08
news.etatpur.com 8 2026-05-01 2026-08-28
azure-back-int.etatpur.com 3 2026-02-02 2026-10-08
azure-front-int.etatpur.com 3 2026-02-02 2026-10-08

Programmatic access: API GET /v1/hosts/etatpur.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/etatpur.com.