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.

10 hosts · 362 ms

HostCertsFirst seenLast seenDNS
sogolytics.com 18 2026-04-17 2026-08-08 ok
*.sogolytics.com 18 2026-04-17 2026-08-08 —
experience.sogolytics.com 10 2026-05-23 2026-09-18 ok
gtm.sogolytics.com 2 2026-07-20 2026-09-13 ok
join.sogolytics.com 9 2026-04-21 2026-09-18 ok
refer.sogolytics.com 9 2026-05-22 2026-09-17 ok
happycustomers.sogolytics.com 10 2025-10-22 2026-09-22 ok
snippet.sogolytics.com 8 2026-04-09 2026-08-06 ok
visit.sogolytics.com 9 2026-04-20 2026-09-17 ok
trustvault.sogolytics.com 5 2026-05-03 2026-08-31 ok

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