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 · 273 ms

HostCertsFirst seenLast seenDNS
marsproxies.com 18 2026-05-01 2026-09-17 ok
*.marsproxies.com 18 2026-05-01 2026-09-17 —
dashboard.marsproxies.com 5 2026-04-24 2026-08-22 ok
new-dashboard.marsproxies.com 5 2026-04-24 2026-08-22 ok
api.marsproxies.com 23 2026-04-13 2026-09-27 ok
data-api.marsproxies.com 21 2026-04-15 2026-08-25 ok
itapi.marsproxies.com 5 2026-05-14 2026-09-11 ok
roadmap.marsproxies.com 4 2026-06-22 2026-08-30 ok
ip.marsproxies.com 5 2026-06-02 2026-09-30 ok
docs.marsproxies.com 9 2026-05-19 2026-09-14 ok
status.marsproxies.com 10 2026-05-07 2026-09-04 ok

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