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.

26 hosts · 262 ms

HostCertsFirst seenLast seen
drhouse.com 8 2025-07-13 2026-09-21
*.drhouse.com 3 2025-08-21 2026-08-19
email.md.drhouse.com 4 2026-04-17 2026-08-15
space.drhouse.com 3 2026-05-04 2026-08-11
staging.drhouse.com 8 2026-03-10 2026-09-21
api-staging.drhouse.com 1 2026-08-15 2026-08-15
access-staging.drhouse.com 2 2026-09-29 2026-09-29
benefits-staging.drhouse.com 1 2026-09-29 2026-09-29
pcp-agent-staging.drhouse.com 1 2026-08-19 2026-08-19
patient-staging.drhouse.com 2 2026-09-29 2026-09-29
www.staging.drhouse.com 8 2026-03-10 2026-09-21
drh.drhouse.com 6 2026-05-31 2026-09-27
youtrack.drhouse.com 5 2026-05-19 2026-09-16
link.drhouse.com 6 2026-06-15 2026-08-13
space.internal.drhouse.com 2 2026-08-11 2026-08-12
upsource.internal.drhouse.com 4 2026-05-11 2026-07-10
*.notification.drhouse.com 3 2025-08-03 2026-08-19
app.drhouse.com 5 2026-05-09 2026-09-06
mail.provider.drhouse.com 182 2026-04-15 2026-08-27
*.canvas-broker.drhouse.com 2 2026-02-04 2026-08-19
*.transcribe-audio-converter.drhouse.com 3 2025-11-06 2026-10-07
docs.drhouse.com 11 2026-05-29 2026-09-24
space-hooks.drhouse.com 1 2026-09-20 2026-09-20
access.drhouse.com 1 2026-09-30 2026-09-30
business.drhouse.com 2 2026-10-04 2026-10-04
www.drhouse.com 7 2025-07-13 2026-09-21

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