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.

7 hosts · 296 ms

HostCertsFirst seenLast seen
micato.com 11 2026-05-19 2026-09-14
vpn26.micato.com 2 2025-06-10 2026-07-02
www.vpn26.micato.com 2 2025-06-10 2026-07-02
itineraries.micato.com 5 2026-04-22 2026-08-21
safaris.micato.com 10 2026-04-24 2026-08-19
guests.micato.com 3 2026-05-31 2026-08-09
www.micato.com 7 2026-05-19 2026-09-14

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