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.

24 hosts · 256 ms

HostCertsFirst seenLast seenDNS
hep.hr 5 2026-01-22 2026-08-19 ok
*.hep.hr 1 2026-01-22 2026-01-22 —
live20.hep.hr 1 2026-01-22 2026-01-22 nxdomain
exwaye01.hep.hr 8 2026-04-21 2026-08-19 ok
mail1.hep.hr 2 2026-01-22 2026-01-22 ok
exwaye02.hep.hr 13 2026-04-21 2026-09-20 ok
szg01symcc2.hep.hr 1 2026-01-22 2026-01-22 nxdomain
mopsek2.hep.hr 1 2026-01-22 2026-01-22 ok
mail2.hep.hr 1 2026-01-22 2026-01-22 ok
karantena.hep.hr 1 2026-01-22 2026-01-22 nxdomain
karijera.hep.hr 1 2026-01-22 2026-01-22 ok
vc.hep.hr 4 2026-04-21 2026-08-19 nodata
bwad.hep.hr 1 2026-01-22 2026-01-22 nxdomain
nextcloud.hep.hr 4 2026-04-15 2026-08-13 ok
exwaye.hep.hr 4 2026-04-21 2026-08-19 ok
webconf.hep.hr 1 2026-01-22 2026-01-22 ok
mail.hep.hr 2 2026-01-22 2026-01-22 ok
myelen.hep.hr 1 2026-08-11 2026-08-11 ok
bwap.hep.hr 1 2026-01-22 2026-01-22 nxdomain
isep.hep.hr 1 2025-11-28 2025-11-28 nxdomain
sip.hep.hr 1 2026-01-22 2026-01-22 ok
isop.hep.hr 1 2026-01-22 2026-01-22 ok
escomonitor.hep.hr 1 2026-01-22 2026-01-22 ok
bwat.hep.hr 1 2026-01-22 2026-01-22 nxdomain

Programmatic access, with DNS A records: API GET /v1/hosts/hep.hr (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/hep.hr.