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.

22 hosts · 346 ms

HostCertsFirst seenLast seenDNS
entrykeyid.com 2 2026-01-23 2026-01-30 nodata
*.entrykeyid.com 2 2026-01-23 2026-01-30 —
qa.entrykeyid.com 3 2025-09-21 2026-08-22 nxdomain
auth.entrykeyid.com 1 2026-05-21 2026-05-21 ok
stage-auth.entrykeyid.com 1 2026-04-07 2026-04-07 ok
www.stage-auth.entrykeyid.com 1 2026-04-07 2026-04-07 nxdomain
www.auth.entrykeyid.com 1 2026-05-21 2026-05-21 nxdomain
go.entrykeyid.com 6 2026-04-19 2026-08-15 ok
smetrics.entrykeyid.com 4 2025-08-07 2026-08-09 ok
qa-es.entrykeyid.com 3 2025-09-21 2026-08-22 nxdomain
www-es.entrykeyid.com 2 2025-10-03 2026-09-03 ok
assets.entrykeyid.com 2 2025-06-24 2026-05-25 ok
stage-assets.entrykeyid.com 2 2025-06-09 2026-05-10 nodata
test-assets.entrykeyid.com 2 2026-05-02 2026-10-02 nodata
dev-assets.entrykeyid.com 1 2026-02-17 2026-02-17 nodata
www.entrykeyid.com 2 2025-10-03 2026-09-03 ok
my.entrykeyid.com 2 2026-05-06 2026-05-28 ok
stage-my.entrykeyid.com 2 2026-05-06 2026-05-20 ok
test-my.entrykeyid.com 2 2026-05-04 2026-05-20 nxdomain
dev-my.entrykeyid.com 5 2025-10-27 2026-08-20 nxdomain
*.dev-my.entrykeyid.com 2 2026-04-09 2026-05-20 —
review.dev-my.entrykeyid.com 2 2026-04-08 2026-04-08 nxdomain

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