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.

20 hosts · 249 ms

HostCertsFirst seenLast seenDNS
prolegal.com 27 2026-04-14 2026-09-05 ok
*.prolegal.com 15 2026-04-14 2026-08-28 —
playground.prolegal.com 4 2026-04-11 2026-08-09 ok
crm-prototype.prolegal.com 5 2026-05-20 2026-09-17 ok
suite.prolegal.com 4 2026-04-15 2026-08-14 ok
medsuite.prolegal.com 4 2026-04-16 2026-08-15 ok
growth.prolegal.com 5 2026-04-30 2026-08-28 ok
admin.prolegal.com 5 2026-05-09 2026-09-06 ok
rides.prolegal.com 4 2026-04-15 2026-08-13 ok
assets.prolegal.com 5 2026-05-15 2026-09-12 ok
mta-sts.prolegal.com 2 2026-05-26 2026-08-05 ok
talent.prolegal.com 5 2026-05-06 2026-09-04 ok
suite-dev.prolegal.com 4 2026-06-05 2026-10-02 ok
medsuite-dev.prolegal.com 4 2026-06-04 2026-10-02 ok
growth-dev.prolegal.com 5 2026-04-30 2026-08-29 ok
crm-dev.prolegal.com 5 2026-05-19 2026-09-15 ok
admin-dev.prolegal.com 5 2026-06-04 2026-10-01 ok
rides-dev.prolegal.com 4 2026-04-08 2026-08-06 ok
talent-dev.prolegal.com 5 2026-05-06 2026-09-03 ok
www.prolegal.com 10 2026-05-09 2026-09-05 ok

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