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.

28 hosts · 220 ms

HostCertsFirst seenLast seen
thebreakers.com 49 2026-04-18 2026-10-01
*.thebreakers.com 31 2026-04-18 2026-10-01
pb.thebreakers.com 3 2025-10-09 2026-10-05
devpb.thebreakers.com 2 2025-10-09 2026-10-05
wwwstatic.thebreakers.com 16 2026-05-08 2026-09-03
ExchHybrid.thebreakers.com 1 2025-08-28 2025-08-28
exchhybrid.thebreakers.com 1 2026-08-04 2026-08-04
mutare.thebreakers.com 2 2025-08-19 2026-07-27
staging.thebreakers.com 4 2026-09-05 2026-09-05
*.staging.thebreakers.com 2 2026-09-05 2026-09-05
cfstaging.thebreakers.com 16 2026-05-06 2026-09-01
vdi.thebreakers.com 2 2025-08-25 2026-09-02
guestportal.thebreakers.com 1 2026-03-12 2026-03-12
mail.thebreakers.com 16 2026-05-08 2026-09-03
hmsliaison.thebreakers.com 1 2025-10-13 2025-10-13
www.hmsliaison.thebreakers.com 1 2025-10-13 2025-10-13
vpn.thebreakers.com 5 2026-04-23 2026-08-20
hmsintsvr.thebreakers.com 1 2025-09-03 2025-09-03
www.hmsintsvr.thebreakers.com 1 2025-09-03 2025-09-03
images.thebreakers.com 2 2026-09-15 2026-09-15
reservations.thebreakers.com 2 2025-09-05 2026-09-04
connect.thebreakers.com 5 2026-04-30 2026-08-28
support.thebreakers.com 2 2025-07-08 2026-06-10
test.thebreakers.com 22 2026-05-08 2026-09-04
rguest.thebreakers.com 1 2026-01-26 2026-01-26
dev.thebreakers.com 31 2026-05-01 2026-09-13
*.dev.thebreakers.com 4 2026-09-13 2026-09-13
www.thebreakers.com 21 2026-05-07 2026-09-16

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