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.

7 hosts · 231 ms

HostCertsFirst seenLast seenDNS
colectivocoffee.com 27 2026-04-18 2026-09-30 ok
*.colectivocoffee.com 12 2026-04-25 2026-08-22 —
wholesale.colectivocoffee.com 6 2026-05-15 2026-10-02 ok
shop.colectivocoffee.com 13 2026-05-10 2026-09-19 ok
cafefaq.colectivocoffee.com 3 2026-05-02 2026-08-23 ok
sys.colectivocoffee.com 5 2026-04-10 2026-09-19 ok
www.colectivocoffee.com 10 2026-04-18 2026-10-01 ok

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