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.

10 hosts · 361 ms

HostCertsFirst seenLast seenDNS
mediascalers.com 14 2026-04-09 2026-09-09 ok
*.mediascalers.com 8 2026-04-09 2026-09-09 —
cloud.mediascalers.com 4 2026-04-10 2026-08-08 ok
admin.mediascalers.com 3 2026-05-04 2026-08-22 ok
iframe.admin.mediascalers.com 6 2026-04-17 2026-08-31 ok
clicks.mediascalers.com 5 2026-05-30 2026-09-27 ok
reviews.mediascalers.com 8 2026-05-06 2026-09-02 ok
dev.mediascalers.com 5 2026-06-02 2026-08-27 ok
preview.mediascalers.com 7 2026-05-08 2026-08-31 ok
www.mediascalers.com 6 2026-04-14 2026-08-31 ok

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