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.

14 hosts · 490 ms

HostCertsFirst seenLast seenDNS
vptpower.com 10 2026-05-16 2026-09-13 ok
web.vptpower.com 2 2025-09-05 2025-10-08 ok
www.web.vptpower.com 2 2025-09-05 2025-10-08 nxdomain
archived.vptpower.com 5 2026-05-20 2026-09-17 ok
store.vptpower.com 10 2026-04-26 2026-08-24 ok
helpdesk.vptpower.com 8 2026-07-07 2026-09-04 ok
redesign.vptpower.com 10 2026-05-08 2026-09-05 ok
vpn.vptpower.com 1 2025-09-27 2025-09-27 ok
www.vpn.vptpower.com 1 2025-09-27 2025-09-27 nxdomain
cms.vptpower.com 16 2026-05-08 2026-09-03 ok
*.cms.vptpower.com 16 2026-05-08 2026-09-03 —
shopify-test.vptpower.com 13 2026-05-12 2026-09-20 ok
www.vptpower.com 10 2026-05-16 2026-09-13 ok
shopify.vptpower.com 15 2026-05-23 2026-10-02 ok

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