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.

40 hosts · 312 ms

HostCertsFirst seenLast seen
bayltd.com 2 2026-03-24 2026-07-29
*.bayltd.com 2 2026-03-24 2026-07-29
prologweb01.bayltd.com 2 2026-03-24 2026-07-29
lync01.bayltd.com 2 2026-03-24 2026-07-29
exchange01.bayltd.com 2 2026-03-24 2026-07-29
skype01.bayltd.com 2 2026-03-24 2026-07-29
vpn01.bayltd.com 2 2026-03-24 2026-07-29
exs01.bayltd.com 2 2026-03-24 2026-07-29
prologweb02.bayltd.com 2 2026-03-24 2026-07-29
vpn02.bayltd.com 2 2026-03-24 2026-07-29
vpn03.bayltd.com 2 2026-03-24 2026-07-29
prologweb.bayltd.com 2 2026-03-24 2026-07-29
prologc.bayltd.com 2 2026-03-24 2026-07-29
lync.bayltd.com 2 2026-03-24 2026-07-29
skypeedge.bayltd.com 2 2026-03-24 2026-07-29
accessedge.bayltd.com 2 2026-03-24 2026-07-29
skype.bayltd.com 2 2026-03-24 2026-07-29
onbase.bayltd.com 2 2026-03-24 2026-07-29
webconf.bayltd.com 2 2026-03-24 2026-07-29
prolog.bayltd.com 2 2026-03-24 2026-07-29
lyncdiscoverInternal.bayltd.com 2 2026-03-24 2026-07-29
webmail.bayltd.com 2 2026-03-24 2026-07-29
prologm.bayltd.com 2 2026-03-24 2026-07-29
wlan.bayltd.com 2 2026-03-24 2026-07-29
dialin.bayltd.com 2 2026-03-24 2026-07-29
admin.bayltd.com 2 2026-03-24 2026-07-29
vpn.bayltd.com 2 2026-03-24 2026-07-29
sip.bayltd.com 2 2026-03-24 2026-07-29
lyncdiscover.bayltd.com 2 2026-03-24 2026-07-29
autodiscover.bayltd.com 2 2026-03-24 2026-07-29
forms.bayltd.com 3 2025-12-01 2026-07-29
eforms.bayltd.com 3 2025-10-21 2026-07-29
hrss.bayltd.com 2 2026-03-24 2026-07-29
bayprojects.bayltd.com 2 2026-03-24 2026-07-29
meet.bayltd.com 2 2026-03-24 2026-07-29
trackit.bayltd.com 2 2026-03-24 2026-07-29
sharepoint.bayltd.com 2 2026-03-24 2026-07-29
onbasetest.bayltd.com 2 2026-03-24 2026-07-29
wptest.bayltd.com 2 2026-03-24 2026-07-29
av.bayltd.com 2 2026-03-24 2026-07-29

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