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.

17 hosts · 248 ms

HostCertsFirst seenLast seen
annexus.com 27 2026-04-24 2026-10-06
*.annexus.com 12 2026-04-24 2026-10-06
sofa.annexus.com 4 2026-02-05 2026-09-22
cloud.e.annexus.com 2 2025-10-06 2026-09-23
image.e.annexus.com 6 2026-10-02 2026-10-09
click.e.annexus.com 2 2025-10-07 2026-09-24
view.e.annexus.com 4 2025-10-07 2026-09-24
supergraph.annexus.com 4 2026-02-05 2026-09-21
book.annexus.com 2 2026-08-11 2026-08-11
cloud.mail.annexus.com 2 2025-07-14 2026-07-01
image.mail.annexus.com 14 2026-09-30 2026-10-09
click.mail.annexus.com 2 2025-07-14 2026-07-02
view.mail.annexus.com 2 2026-08-27 2026-08-27
vpn.annexus.com 3 2026-03-10 2026-08-24
www.vpn.annexus.com 3 2026-03-10 2026-08-24
www.annexus.com 11 2026-04-30 2026-09-21
identity.annexus.com 4 2026-02-04 2026-09-19

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