Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

15 hosts · 230 ms

HostCertsFirst seenLast seen
dotts.tech 51 2026-05-04 2026-10-06
*.dotts.tech 11 2026-05-22 2026-09-19
coe.dotts.tech 1 2026-08-25 2026-08-25
live.dotts.tech 3 2026-06-05 2026-06-05
staging.dotts.tech 14 2026-06-04 2026-10-01
ai.dotts.tech 4 2026-06-07 2026-10-06
cms.dotts.tech 8 2026-06-04 2026-09-30
uat-cms.dotts.tech 10 2026-06-05 2026-10-01
*.uat-cms.dotts.tech 10 2026-06-05 2026-10-01
dev-cms.dotts.tech 6 2026-06-10 2026-10-06
*.dev-cms.dotts.tech 6 2026-06-10 2026-10-06
*.cms.dotts.tech 8 2026-06-04 2026-09-30
uat.dotts.tech 10 2026-06-10 2026-10-06
dev.dotts.tech 9 2026-06-10 2026-10-06
www.dotts.tech 12 2026-05-04 2026-09-01

Programmatic access: API GET /v1/hosts/dotts.tech (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/dotts.tech.