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.

10 hosts · 278 ms

HostCertsFirst seenLast seen
zensitively.com 16 2026-04-22 2026-09-17
*.zensitively.com 11 2026-04-22 2026-09-17
api.zensitively.com 8 2026-05-12 2026-09-08
cdn.zensitively.com 8 2026-04-28 2026-09-07
shop.zensitively.com 5 2026-04-28 2026-08-26
mta-sts.zensitively.com 5 2026-05-02 2026-08-28
t.zensitively.com 11 2026-06-01 2026-09-27
checkout.zensitively.com 10 2026-04-21 2026-08-17
dev.zensitively.com 5 2026-04-23 2026-08-27
www.zensitively.com 5 2026-04-24 2026-08-25

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