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.

15 hosts · 249 ms

HostCertsFirst seenLast seen
bzi.com 16 2026-05-08 2026-10-09
*.bzi.com 14 2026-05-08 2026-09-08
360.bzi.com 1 2026-09-10 2026-09-10
apex-staging.bzi.com 1 2026-07-01 2026-07-01
360-api.bzi.com 1 2026-09-10 2026-09-10
xt-api.bzi.com 2 2026-09-28 2026-09-29
track.bzi.com 5 2026-05-18 2026-09-15
link.fabman.bzi.com 5 2026-06-01 2026-09-29
rentals.bzi.com 1 2026-02-12 2026-02-12
mta-sts.bzi.com 2 2026-05-29 2026-08-08
support.bzi.com 4 2026-04-19 2026-08-17
xt.bzi.com 1 2026-09-28 2026-09-28
www.bzi.com 2 2026-10-09 2026-10-09
apex.bzi.com 3 2026-05-24 2026-07-01
link.apex.bzi.com 5 2026-05-14 2026-09-11

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