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.

44 hosts · 184 ms

HostCertsFirst seenLast seen
dockethealth.com 2 2026-03-15 2026-08-15
alpha.dockethealth.com 3 2025-10-29 2026-09-29
app.alpha.dockethealth.com 2 2025-07-31 2026-07-01
*.app.alpha.dockethealth.com 2 2025-07-31 2026-07-01
beta.dockethealth.com 3 2025-10-29 2026-09-29
app.beta.dockethealth.com 2 2025-07-31 2026-07-01
*.app.beta.dockethealth.com 2 2025-07-31 2026-07-01
ice.dockethealth.com 1 2026-09-16 2026-09-16
alpha.ice.dockethealth.com 2 2026-09-16 2026-09-16
beta.ice.dockethealth.com 1 2026-09-16 2026-09-16
alpha-ice-hln.alpha-internal.ice.dockethealth.com 1 2026-09-03 2026-09-03
beta-hln-ice.beta-internal.ice.dockethealth.com 1 2026-09-04 2026-09-04
prod-hln-ice.prod-internal.ice.dockethealth.com 1 2026-09-08 2026-09-08
exe.dockethealth.com 1 2026-10-07 2026-10-07
alpha-hln-ice.alpha-internal.dockethealth.com 3 2025-06-30 2026-08-31
alpha-ice-hln.alpha-internal.dockethealth.com 1 2025-10-06 2025-10-06
beta-hln-ice.beta-internal.dockethealth.com 6 2025-07-21 2026-08-31
prod-hln-ice.prod-internal.dockethealth.com 6 2025-07-21 2026-08-31
shop.dockethealth.com 3 2026-07-06 2026-09-04
app.dockethealth.com 2 2025-08-01 2026-07-02
*.app.dockethealth.com 2 2025-08-01 2026-07-02
alpha.id.iis.dockethealth.com 2 2025-12-08 2025-12-08
proxy.alpha.id.iis.dockethealth.com 1 2026-10-06 2026-10-06
beta.id.iis.dockethealth.com 1 2026-01-05 2026-01-05
proxy.beta.id.iis.dockethealth.com 1 2026-10-07 2026-10-07
alpha.va.schools.dockethealth.com 1 2026-09-10 2026-09-10
guides.alpha.va.schools.dockethealth.com 1 2026-10-07 2026-10-07
beta.va.schools.dockethealth.com 1 2026-09-11 2026-09-11
dc.schools.dockethealth.com 1 2026-09-11 2026-09-11
alpha.dc.schools.dockethealth.com 1 2026-09-10 2026-09-10
guides.alpha.dc.schools.dockethealth.com 1 2026-10-07 2026-10-07
beta.dc.schools.dockethealth.com 1 2026-09-11 2026-09-11
id.schools.dockethealth.com 3 2025-10-30 2026-09-30
alpha.id.schools.dockethealth.com 2 2025-10-30 2026-09-30
beta.id.schools.dockethealth.com 2 2025-10-30 2026-09-30
me.schools.dockethealth.com 2 2025-10-05 2026-09-05
alpha.me.schools.dockethealth.com 2 2025-10-02 2026-09-02
guides.alpha.me.schools.dockethealth.com 1 2026-10-07 2026-10-07
beta.me.schools.dockethealth.com 2 2025-10-05 2026-09-05
ut.schools.dockethealth.com 2 2026-05-11 2026-10-11
alpha.ut.schools.dockethealth.com 2 2026-05-10 2026-10-10
guides.alpha.ut.schools.dockethealth.com 1 2026-10-07 2026-10-07
beta.ut.schools.dockethealth.com 2 2026-05-11 2026-10-11
www.dockethealth.com 2 2026-03-15 2026-08-15

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