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.

12 hosts · 241 ms

Download CSV
HostCertsFirst seenLast seen
emishealth.com 20 2026-01-12 2026-10-06
*.emishealth.com 20 2026-03-12 2026-10-06
bnf.emishealth.com 6 2026-02-24 2026-09-03
portalsdk.emishealth.com 2 2026-04-29 2026-05-12
www.portalsdk.emishealth.com 2 2026-04-29 2026-05-12
bnfmonitor.emishealth.com 1 2026-02-24 2026-02-24
acutedss.emishealth.com 2 2025-08-27 2026-07-28
dev.acutedss.emishealth.com 2 2025-08-27 2026-07-28
status.emishealth.com 4 2026-04-18 2026-08-16
acutedss-test.emishealth.com 2 2025-08-27 2026-07-28
www.emishealth.com 2 2026-01-12 2026-01-12
academy.emishealth.com 5 2026-05-08 2026-09-06

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