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.

12 hosts · 319 ms

HostCertsFirst seenLast seenDNS
payprocc.com 45 2026-04-23 2026-10-02 ok
*.payprocc.com 33 2026-04-23 2026-10-02 —
invoice.payprocc.com 11 2026-06-15 2026-09-02 ok
api.payprocc.com 8 2026-06-15 2026-09-02 ok
admin.payprocc.com 8 2026-06-15 2026-09-02 ok
analytics.payprocc.com 7 2026-06-15 2026-08-28 ok
api-analytics.payprocc.com 9 2026-06-15 2026-08-20 ok
docs.payprocc.com 8 2026-06-15 2026-09-02 ok
es-docs.payprocc.com 10 2026-06-15 2026-09-02 ok
sales.payprocc.com 4 2026-04-24 2026-05-13 ok
checkout.payprocc.com 10 2026-06-15 2026-09-02 ok
www.payprocc.com 10 2026-04-30 2026-08-26 ok

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