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.

63 hosts · 494 ms

HostCertsFirst seenLast seenDNS
milnor.com 116 2025-08-29 2026-10-06 ok
*.milnor.com 92 2025-08-29 2026-10-06 —
pa500.milnor.com 90 2025-08-29 2026-10-02 nxdomain
pa3020.milnor.com 90 2025-08-29 2026-10-02 nxdomain
uc-kn-expc-01.milnor.com 60 2025-09-15 2026-10-02 nxdomain
uc-kn-expe-01.milnor.com 60 2025-09-15 2026-10-02 ok
uc-kn-cucm-01.milnor.com 61 2025-09-15 2026-10-02 nxdomain
uc-kn-ucxn-01.milnor.com 60 2025-09-15 2026-10-02 nxdomain
uc-kn-imp-01.milnor.com 62 2025-09-15 2026-10-02 nxdomain
uc-kn-uccx-01.milnor.com 60 2025-09-15 2026-10-02 nxdomain
dc1.milnor.com 90 2025-08-29 2026-10-02 nxdomain
hvdr1.milnor.com 3 2026-09-17 2026-09-30 nxdomain
hv1.milnor.com 1 2026-05-19 2026-05-19 nxdomain
uc-br-expc-02.milnor.com 60 2025-09-15 2026-10-02 nxdomain
uc-br-expe-02.milnor.com 60 2025-09-15 2026-10-02 ok
uc-br-cucm-02.milnor.com 61 2025-09-15 2026-10-02 nxdomain
uc-br-ucxn-02.milnor.com 60 2025-09-15 2026-10-02 nxdomain
uc-br-imp-02.milnor.com 62 2025-09-15 2026-10-02 nxdomain
uc-br-uccx-02.milnor.com 60 2025-09-15 2026-10-02 nxdomain
windchill12.milnor.com 90 2025-08-29 2026-10-02 nxdomain
dc2.milnor.com 90 2025-08-29 2026-10-02 nxdomain
vpn2.milnor.com 90 2025-08-29 2026-10-02 ok
hvdr2.milnor.com 37 2026-09-17 2026-10-02 nxdomain
hv2.milnor.com 48 2026-05-19 2026-10-02 nxdomain
windchill13.milnor.com 90 2025-08-29 2026-10-02 nxdomain
FilerPROD-HA.milnor.com 1 2026-09-30 2026-09-30 —
filerprod-ha.milnor.com 89 2025-08-29 2026-10-02 nxdomain
rubrika.milnor.com 90 2025-08-29 2026-10-02 nxdomain
owa.milnor.com 90 2025-08-29 2026-10-02 ok
rubrikb.milnor.com 90 2025-08-29 2026-10-02 nxdomain
github.milnor.com 90 2025-08-29 2026-10-02 nxdomain
ec.milnor.com 90 2025-08-29 2026-10-02 ok
castic.milnor.com 90 2025-08-29 2026-10-02 ok
rubrikc.milnor.com 90 2025-08-29 2026-10-02 nxdomain
rubrikd.milnor.com 90 2025-08-29 2026-10-02 nxdomain
prod.milnor.com 90 2025-08-29 2026-10-02 nxdomain
filerprod.milnor.com 90 2025-08-29 2026-10-02 nxdomain
pa440stafford.milnor.com 90 2025-08-29 2026-10-02 nxdomain
collab-edge.milnor.com 60 2025-09-15 2026-10-02 nxdomain
exchange.milnor.com 90 2025-08-29 2026-10-02 nxdomain
intouch.milnor.com 90 2025-08-29 2026-10-02 ok
exch.milnor.com 90 2025-08-29 2026-10-02 nxdomain
pa200wh.milnor.com 90 2025-08-29 2026-10-02 nxdomain
helpdesk.milnor.com 49 2025-08-29 2026-09-14 nxdomain
windchill.milnor.com 90 2025-08-29 2026-10-02 nxdomain
orion.milnor.com 90 2025-08-29 2026-10-02 nxdomain
vpn.milnor.com 90 2025-08-29 2026-10-02 ok
pa200plmsco.milnor.com 90 2025-08-29 2026-10-02 nxdomain
dcro.milnor.com 90 2025-08-29 2026-10-02 nxdomain
testsp.milnor.com 90 2025-08-29 2026-10-02 nxdomain
activeiq.milnor.com 90 2025-08-29 2026-10-02 nxdomain
filerdr.milnor.com 90 2025-08-29 2026-10-02 nxdomain
autodiscover.milnor.com 90 2025-08-29 2026-10-02 ok
kronos.milnor.com 90 2025-08-29 2026-10-02 nxdomain
xpenseit.milnor.com 90 2025-08-29 2026-10-02 ok
test.milnor.com 90 2025-08-29 2026-10-02 nxdomain
dev.milnor.com 90 2025-08-29 2026-10-02 nxdomain
kronosdev.milnor.com 90 2025-08-29 2026-10-02 nxdomain
wwwdev.milnor.com 5 2026-05-16 2026-09-13 ok
www.milnor.com 5 2026-06-02 2026-09-30 ok
relay.milnor.com 90 2025-08-29 2026-10-02 nxdomain
haproxy.milnor.com 90 2025-08-29 2026-10-02 nxdomain
dcdmz.milnor.com 90 2025-08-29 2026-10-02 nxdomain

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