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.

11 hosts · 210 ms

HostCertsFirst seenLast seen
granzow.com 4 2026-04-20 2026-09-11
ilo.jakob.granzow.com 1 2026-04-20 2026-04-20
i.granzow.com 4 2026-04-20 2026-09-10
internal.granzow.com 1 2026-04-20 2026-04-20
admin.granzow.com 4 2026-04-20 2026-09-11
shop.granzow.com 16 2026-04-22 2026-10-04
fs.granzow.com 1 2026-04-20 2026-04-20
vpn.clt.granzow.com 1 2026-04-20 2026-04-20
account.granzow.com 12 2026-04-17 2026-08-14
www.granzow.com 4 2026-04-20 2026-09-11
pay.granzow.com 4 2026-06-03 2026-06-03

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