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.

8 hosts · 225 ms

Download CSV
HostCertsFirst seenLast seen
oshyn.com 13 2026-02-12 2026-10-09
*.oshyn.com 13 2026-02-12 2026-10-09
www2.oshyn.com 6 2026-05-20 2026-08-29
octopusqa.oshyn.com 2 2026-06-03 2026-06-03
wac.oshyn.com 5 2026-05-07 2026-08-27
uptime.oshyn.com 1 2026-07-27 2026-07-27
octopus.oshyn.com 2 2026-06-05 2026-06-05
digitaltrust.oshyn.com 5 2026-05-17 2026-09-20

Programmatic access: API GET /v1/hosts/oshyn.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/oshyn.com.