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.

9 hosts · 311 ms

HostCertsFirst seenLast seenDNS
exoscale.com 1 2026-01-12 2026-01-12 ok
*.exoscale.com 1 2026-01-12 2026-01-12 —
openapi-v2.exoscale.com 23 2026-04-22 2026-09-17 ok
changelog.exoscale.com 2 2026-05-04 2026-05-04 ok
shop.exoscale.com 13 2026-05-01 2026-09-09 ok
jobs.exoscale.com 10 2026-05-26 2026-09-23 ok
events.exoscale.com 10 2026-05-30 2026-09-27 ok
academy.exoscale.com 16 2026-05-10 2026-09-21 ok
studio.academy.exoscale.com 16 2026-05-10 2026-09-21 ok

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