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.

19 hosts · 269 ms

HostCertsFirst seenLast seenDNS
dreamhub.ai 11 2026-04-18 2026-09-22 ok
*.dreamhub.ai 8 2026-04-18 2026-08-14 —
mcp-qa.dreamhub.ai 1 2026-08-02 2026-08-02 ok
staging-web.dreamhub.ai 3 2026-05-26 2026-09-08 ok
mcp-playground.dreamhub.ai 1 2026-07-31 2026-07-31 ok
crm-dev-playground.dreamhub.ai 6 2026-04-10 2026-09-20 ok
crm-prod-prod.dreamhub.ai 3 2026-05-10 2026-08-29 ok
crm-qa-stable.dreamhub.ai 5 2026-04-12 2026-09-23 ok
auth.dreamhub.ai 3 2025-10-31 2026-10-01 ok
crm-dev-auth.dreamhub.ai 2 2026-02-20 2026-07-08 ok
zoom.dreamhub.ai 3 2026-05-30 2026-09-16 ok
crm.dreamhub.ai 3 2026-05-10 2026-08-29 ok
demo.dreamhub.ai 5 2026-04-23 2026-10-02 ok
crm-demo-demo.dreamhub.ai 5 2026-04-23 2026-10-02 ok
mcp.dreamhub.ai 1 2026-08-02 2026-08-02 ok
docs.dreamhub.ai 6 2026-06-05 2026-09-29 ok
assets.dreamhub.ai 5 2026-04-24 2026-09-30 ok
mta-sts.dreamhub.ai 5 2026-04-22 2026-09-27 ok
www.dreamhub.ai 6 2026-06-06 2026-09-23 ok

Programmatic access, with DNS A records: API GET /v1/hosts/dreamhub.ai (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/dreamhub.ai.