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.

12 hosts · 348 ms

HostCertsFirst seenLast seenDNS
coeo-group.ai 1 2025-12-11 2025-12-11 ok
grafana.coeo-group.ai 1 2026-08-03 2026-08-03 ok
api-klarna-dca-nl-dev.de-prd.coeo-group.ai 2 2026-08-27 2026-08-27 nodata
*.at-prd.coeo-group.ai 3 2026-05-11 2026-08-17 —
cloud.coeo-group.ai 5 2026-05-05 2026-09-03 ok
ai-use-case.coeo-group.ai 2 2026-08-18 2026-08-18 ok
bimi.coeo-group.ai 3 2026-07-22 2026-09-20 ok
portainer.coeo-group.ai 2 2026-07-29 2026-07-29 nodata
*.de-dev.coeo-group.ai 2 2026-04-23 2026-04-23 —
klarna-dca-distributor-api.de-dev.coeo-group.ai 1 2026-09-03 2026-09-03 ok
*.at-dev.coeo-group.ai 5 2026-04-23 2026-08-17 —
www.coeo-group.ai 1 2025-12-11 2025-12-11 ok

Programmatic access, with DNS A records: API GET /v1/hosts/coeo-group.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/coeo-group.ai.