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.

16 hosts · 300 ms

HostCertsFirst seenLast seen
healthydirections.com 29 2025-06-28 2026-10-02
*.healthydirections.com 29 2025-06-28 2026-10-02
stage-static-media.healthydirections.com 1 2025-11-18 2025-11-18
dev-static-media.healthydirections.com 2 2025-10-28 2026-09-28
stage-media.healthydirections.com 2 2025-10-28 2026-09-28
dev-media.healthydirections.com 3 2025-07-25 2026-06-25
*.prod.healthydirections.com 1 2026-01-27 2026-01-27
*.e.healthydirections.com 2 2025-10-28 2026-09-28
*.di.healthydirections.com 1 2025-12-15 2025-12-15
links.healthydirections.com 14 2026-05-23 2026-09-25
*.links.healthydirections.com 14 2026-05-23 2026-09-25
sms.healthydirections.com 16 2026-05-13 2026-09-08
sslstats.healthydirections.com 5 2026-04-15 2026-10-01
*.test.healthydirections.com 1 2025-12-23 2025-12-23
sv.healthydirections.com 6 2026-03-30 2026-09-14
www.healthydirections.com 3 2025-10-16 2026-09-17

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