Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts, first/last seen and live DNS status.

5 hosts · 337 ms

HostCertsFirst seenLast seenDNS
cloud.scrippshealth-email.org 3 2025-08-24 2026-08-11 ok
image.scrippshealth-email.org 4 2025-08-23 2026-10-05 ok
click.scrippshealth-email.org 3 2025-08-24 2026-08-11 ok
pages.scrippshealth-email.org 3 2025-08-24 2026-08-12 ok
view.scrippshealth-email.org 3 2025-08-24 2026-08-12 ok

Programmatic access, with DNS A records: API GET /v1/hosts/scrippshealth-email.org (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/scrippshealth-email.org.