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.

42 hosts · 382 ms

HostCertsFirst seenLast seenDNS
klingspor.com 13 2026-03-25 2026-09-15 ok
*.klingspor.com 13 2026-03-25 2026-09-15 —
prtg-1.klingspor.com 2 2025-07-31 2026-07-27 ok
plesk01.klingspor.com 5 2026-04-27 2026-08-25 ok
hky-fpbx1.klingspor.com 3 2026-06-09 2026-08-08 ok
rsmconference2025.klingspor.com 12 2026-05-28 2026-07-26 ok
sales-routes-backend.klingspor.com 10 2026-04-25 2026-08-22 ok
sales-sotyleaderboard.klingspor.com 4 2026-04-14 2026-08-13 ok
inside.klingspor.com 7 2025-09-11 2026-09-26 ok
beta.inside.klingspor.com 5 2026-06-04 2026-10-02 ok
www.inside.klingspor.com 1 2025-09-11 2025-09-11 ok
cape.klingspor.com 3 2026-04-21 2026-06-20 nxdomain
www.cape.klingspor.com 3 2026-04-21 2026-06-20 nxdomain
merchstore.klingspor.com 3 2026-06-30 2026-08-29 ok
www.merchstore.klingspor.com 3 2026-06-30 2026-08-29 ok
hky-vending.klingspor.com 5 2026-05-15 2026-09-12 ok
training.klingspor.com 4 2026-04-28 2026-07-12 ok
www.training.klingspor.com 4 2026-04-28 2026-07-12 ok
emailmarketing.klingspor.com 3 2026-06-02 2026-08-21 ok
digital-catalog.klingspor.com 2 2025-12-08 2026-01-12 ok
link.klingspor.com 4 2026-04-19 2026-08-17 ok
email.klingspor.com 4 2026-06-06 2026-10-04 ok
link.email.klingspor.com 4 2026-04-19 2026-08-17 ok
kom.klingspor.com 1 2025-11-04 2025-11-04 nxdomain
sign.klingspor.com 2 2026-05-04 2026-05-04 nxdomain
armadillo.klingspor.com 5 2026-05-18 2026-09-15 ok
sales-kap.klingspor.com 5 2026-05-08 2026-09-05 ok
www.sales-kap.klingspor.com 5 2026-05-08 2026-09-05 ok
ksynqapp.klingspor.com 12 2025-12-29 2026-09-30 ok
sales-legacylookup.klingspor.com 4 2026-06-08 2026-10-07 ok
lansweeper.klingspor.com 2 2025-07-31 2026-07-27 nxdomain
sales-routes.klingspor.com 4 2026-04-13 2026-08-12 ok
www.sales-routes.klingspor.com 4 2026-04-12 2026-08-11 ok
email-link.ai-agents.klingspor.com 1 2026-08-04 2026-08-04 nxdomain
mta-sts.klingspor.com 5 2026-05-27 2026-09-24 ok
status.klingspor.com 5 2026-05-19 2026-09-17 ok
bsit.klingspor.com 5 2026-05-23 2026-09-21 ok
support.klingspor.com 5 2026-05-11 2026-09-09 ok
swissapptest.klingspor.com 14 2025-12-29 2026-10-03 ok
www.klingspor.com 6 2025-11-04 2026-08-24 ok
hky-mailrelay.klingspor.com 255 2026-04-11 2026-10-07 ok
buy.klingspor.com 5 2026-05-02 2026-08-30 ok

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