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.

5 hosts · 302 ms

HostCertsFirst seenLast seenDNS
shopsassyjones.com 12 2026-05-15 2026-09-20 ok
dgqur.shopsassyjones.com 10 2026-05-06 2026-09-01 ok
www.shopsassyjones.com 13 2026-05-15 2026-09-29 ok
pay.shopsassyjones.com 3 2025-07-08 2026-07-08 ok
www.pay.shopsassyjones.com 3 2025-07-08 2026-07-08 nxdomain

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