Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

37 hosts · 232 ms

HostCertsFirst seenLast seen
beamtrail.com 5 2026-04-25 2026-08-25
ecc01.beamtrail.com 1 2026-06-23 2026-06-23
app01.beamtrail.com 1 2026-06-23 2026-06-23
ecct01.beamtrail.com 3 2026-06-24 2026-09-22
erpt01.beamtrail.com 4 2026-06-24 2026-08-14
ecc02.beamtrail.com 1 2026-06-23 2026-06-23
app02.beamtrail.com 1 2026-06-23 2026-06-23
bt-ERP.beamtrail.com 1 2025-07-28 2025-07-28
btrdztna.beamtrail.com 2 2025-11-18 2026-01-08
btbizztna.beamtrail.com 2 2025-11-18 2026-01-08
zmtd.beamtrail.com 1 2025-09-18 2025-09-18
awconsole.beamtrail.com 1 2026-06-09 2026-06-09
home.beamtrail.com 1 2026-02-02 2026-02-02
hqhome.beamtrail.com 2 2025-08-14 2026-09-01
fileshare.beamtrail.com 1 2026-02-16 2026-02-16
jamf.beamtrail.com 3 2025-06-13 2026-07-10
seg.beamtrail.com 1 2026-06-09 2026-06-09
bt-servicedesk.beamtrail.com 2 2026-01-06 2026-01-08
flexidesk.beamtrail.com 2 2025-08-04 2026-09-07
chatai.external.beamtrail.com 1 2025-11-20 2025-11-20
cpanel.beamtrail.com 5 2026-04-25 2026-08-25
mail.beamtrail.com 2 2025-08-10 2026-09-08
download.mail.beamtrail.com 2 2025-08-10 2026-09-08
mdm.beamtrail.com 1 2026-06-09 2026-06-09
bt-pem.beamtrail.com 1 2025-11-25 2025-11-25
ssl-vpn.beamtrail.com 1 2026-05-15 2026-05-15
bt-erp.beamtrail.com 2 2026-06-23 2026-06-29
smtp.beamtrail.com 2 2025-08-10 2026-09-08
spamfilter.beamtrail.com 2 2025-08-10 2026-09-08
autodiscover.beamtrail.com 2 2025-08-10 2026-09-08
ebs.beamtrail.com 1 2026-06-24 2026-06-24
mta-sts.beamtrail.com 2 2025-07-31 2026-07-01
keys.beamtrail.com 2 2025-08-10 2026-09-07
keysint.beamtrail.com 2 2025-08-10 2026-09-07
mysupport.beamtrail.com 1 2026-03-03 2026-03-03
keysext.beamtrail.com 2 2025-08-10 2026-09-07
www.beamtrail.com 5 2026-04-25 2026-08-25

Programmatic access: API GET /v1/hosts/beamtrail.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/beamtrail.com.