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.

28 hosts · 301 ms

HostCertsFirst seenLast seenDNS
osprey.com 19 2026-04-12 2026-09-25 ok
*.osprey.com 14 2026-04-12 2026-08-27 —
vice01.osprey.com 2 2026-03-06 2026-07-22 ok
vice02.osprey.com 2 2026-03-06 2026-07-22 ok
vice03.osprey.com 2 2026-03-06 2026-07-22 ok
mcloud-emea-stage3.osprey.com 5 2026-04-28 2026-08-26 ok
mcloud-na-stage3.osprey.com 4 2026-04-18 2026-08-16 ok
vice04.osprey.com 2 2026-03-06 2026-07-22 ok
mcloud-emea-stage4.osprey.com 7 2026-05-21 2026-09-18 ok
mcloud-na-stage4.osprey.com 4 2026-04-17 2026-08-15 ok
vice05.osprey.com 2 2026-03-06 2026-07-22 ok
mcloud-emea-stage5.osprey.com 6 2026-04-14 2026-09-29 ok
mcloud-na-stage5.osprey.com 5 2026-04-26 2026-08-24 ok
mcloud-emea.osprey.com 4 2026-04-11 2026-08-09 ok
mcloud-na.osprey.com 5 2026-05-28 2026-09-25 ok
mcloud-emea-preprod.osprey.com 5 2026-05-03 2026-08-31 ok
mcloud-na-preprod.osprey.com 5 2026-05-25 2026-09-22 ok
aprimodamprod.osprey.com 29 2026-04-18 2026-10-04 ok
mcloud-emea-stage.osprey.com 5 2026-05-15 2026-09-12 ok
mcloud-na-stage.osprey.com 7 2026-05-22 2026-09-19 ok
knowledge-base.osprey.com 2 2025-08-20 2026-07-21 ok
training.osprey.com 1 2025-12-10 2025-12-10 ok
*.training.osprey.com 1 2025-12-10 2025-12-10 —
help.osprey.com 2 2025-07-14 2026-06-14 ok
gtm-preview-server.osprey.com 3 2026-02-20 2026-10-04 ok
sms.osprey.com 12 2026-05-11 2026-09-07 ok
www.osprey.com 5 2026-05-28 2026-09-25 ok
aprimodamsandbox.osprey.com 12 2026-04-21 2026-08-24 ok

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