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.

6 hosts · 244 ms

HostCertsFirst seenLast seen
manfield.com 1 2025-11-06 2025-11-06
*.manfield.com 1 2025-11-06 2025-11-06
id.manfield.com 5 2026-04-22 2026-10-03
e.manfield.com 4 2026-04-19 2026-08-17
sst.manfield.com 5 2026-05-05 2026-09-02
prev.manfield.com 5 2026-05-05 2026-09-02

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