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.

17 hosts · 354 ms

HostCertsFirst seenLast seenDNS
databento.com 3 2025-10-21 2026-09-20 ok
*.databento.com 7 2025-10-21 2026-09-20 —
vol0.databento.com 5 2026-04-29 2026-10-05 ok
databento-fleetdm-01.databento.com 1 2026-06-30 2026-06-30 nxdomain
slab.databento.com 8 2026-05-07 2026-09-02 ok
*.lsg.databento.com 4 2026-04-15 2026-08-13 —
*.staging.lsg.databento.com 4 2026-04-15 2026-08-13 —
apl.databento.com 13 2026-05-02 2026-09-11 ok
medium.databento.com 9 2026-05-20 2026-09-15 ok
roadmap.databento.com 5 2026-05-25 2026-09-22 ok
issues.databento.com 5 2026-05-31 2026-09-27 ok
status.databento.com 4 2026-04-14 2026-08-11 ok
fleet.databento.com 1 2026-06-29 2026-06-29 ok
api0-proxy.databento.com 5 2026-05-28 2026-09-25 ok
hist0-proxy.databento.com 5 2026-05-29 2026-09-27 ok
api-proxy.databento.com 5 2026-05-28 2026-09-25 ok
hist-proxy.databento.com 5 2026-05-28 2026-09-25 ok

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