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 · 349 ms

HostCertsFirst seenLast seenDNS
gearpatrol.com 33 2025-06-18 2026-10-06 ok
*.gearpatrol.com 23 2025-06-18 2026-10-01 —
stocked.gearpatrol.com 5 2026-04-30 2026-08-23 ok
store.gearpatrol.com 11 2026-05-15 2026-09-24 ok
new-site.gearpatrol.com 2 2026-05-23 2026-05-23 ok
65ea5172734f037282910aaf.gearpatrol.com 6 2026-04-20 2026-08-16 ok
sli.gearpatrol.com 2 2026-02-28 2026-07-16 ok
admin.gearpatrol.com 5 2026-04-23 2026-08-25 ok
newsletter.gearpatrol.com 2 2026-04-18 2026-04-18 nodata
wayfinder-updates.gearpatrol.com 4 2026-08-04 2026-10-02 ok
cms.gearpatrol.com 4 2026-04-11 2026-08-13 ok
studios.gearpatrol.com 5 2026-05-01 2026-08-24 ok
gps.studios.gearpatrol.com 5 2026-05-22 2026-09-09 ok
www.gps.studios.gearpatrol.com 5 2026-05-12 2026-09-04 ok
newsletters.gearpatrol.com 10 2026-04-20 2026-08-16 ok
elink29a.newsletters.gearpatrol.com 18 2026-05-03 2026-08-29 ok
mta-sts.gearpatrol.com 2 2025-10-06 2026-09-06 ok
giveaways.gearpatrol.com 5 2026-05-21 2026-09-08 ok
podcast.gearpatrol.com 5 2026-04-28 2026-08-26 ok
www.gearpatrol.com 4 2026-06-04 2026-10-06 ok

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