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.

26 hosts · 264 ms

HostCertsFirst seenLast seenDNS
workweave.ai 11 2026-05-13 2026-10-02 ok
*.workweave.ai 11 2026-05-13 2026-10-02 —
staging-01.workweave.ai 5 2026-04-18 2026-09-27 ok
e.staging-01.workweave.ai 3 2026-05-06 2026-08-26 ok
clickhouse-etl.staging-01.workweave.ai 3 2026-05-24 2026-09-06 ok
apm.staging-01.workweave.ai 11 2026-04-22 2026-09-12 ok
admin.staging-01.workweave.ai 3 2026-05-11 2026-08-27 ok
router.staging-01.workweave.ai 3 2026-04-28 2026-08-17 ok
updates.staging-01.workweave.ai 5 2026-04-20 2026-09-29 ok
preview.staging-01.workweave.ai 5 2026-05-25 2026-09-25 ok
*.preview.staging-01.workweave.ai 5 2026-05-23 2026-09-23 —
clickhouse-query.staging-01.workweave.ai 3 2026-05-19 2026-09-04 ok
data.workweave.ai 2 2026-07-18 2026-07-18 ok
go.workweave.ai 5 2026-05-24 2026-09-25 ok
app.workweave.ai 5 2026-04-10 2026-09-20 ok
e.app.workweave.ai 6 2026-04-21 2026-09-30 ok
clickhouse-etl.app.workweave.ai 3 2026-05-24 2026-09-08 ok
apm.app.workweave.ai 11 2026-04-22 2026-09-09 ok
admin.app.workweave.ai 3 2026-05-14 2026-08-29 ok
clickhouse-query.app.workweave.ai 3 2026-05-15 2026-08-29 ok
router.workweave.ai 3 2026-04-28 2026-08-12 ok
docs.workweave.ai 14 2026-05-06 2026-09-01 ok
updates.workweave.ai 5 2026-04-20 2026-09-28 ok
status.workweave.ai 5 2026-04-23 2026-08-25 ok
deploy.workweave.ai 1 2026-02-04 2026-02-04 ok
registry.workweave.ai 1 2026-02-04 2026-02-04 ok

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