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.

11 hosts · 313 ms

HostCertsFirst seenLast seenDNS
silverscript.com 20 2025-07-21 2026-09-01 ok
*.silverscript.com 5 2025-07-21 2026-08-18 —
membereducation-qa.silverscript.com 2 2026-03-04 2026-07-17 ok
cloud.em.silverscript.com 1 2025-11-01 2025-11-01 ok
image.em.silverscript.com 2 2026-01-07 2026-01-15 ok
click.em.silverscript.com 1 2025-11-01 2025-11-01 ok
view.em.silverscript.com 1 2025-11-03 2025-11-03 ok
membereducation.silverscript.com 2 2026-03-04 2026-07-17 ok
preprod-info.silverscript.com 6 2025-12-02 2026-08-27 nxdomain
tools.silverscript.com 17 2025-07-23 2026-09-09 ok
www.silverscript.com 2 2025-07-21 2026-08-03 ok

Programmatic access, with DNS A records: API GET /v1/hosts/silverscript.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/silverscript.com.