Top-Level Domain

.cern

Aggregated statistics for the top-level domain

Apex domains

we've enumerated

Subdomains seen

525

CT + DNS + brute

TLS certs

—

naming .cern

Hosting ASNs

—

distinct origins

Apex domains with the most known subdomains — large orgs, telecoms, hosters.

Apex	Subdomains
atlas.cern	19
home.cern	18
arts.cern	12
nic.cern	12
cms.cern	12
careers.cern	12
visit.cern	12
root.cern	12
repository.cern	10
library.cern	8
cernandsocietyfoundation.cern	7
webfest.cern	7
internationalrelations.cern	6
medicis.cern	6
againstcovid19.cern	6
beamlineforschools.cern	6
standardmodel.cern	6
ventureconnect.cern	6
experiments.cern	6
europeanstrategy.cern	6
science.cern	6
ideasquare.cern	6
beams.cern	6
openscience.cern	6
physics.cern	6
alice.cern	6
teachers.cern	6
sciencegateway.cern	6
supersymmetry.cern	6
opendays.cern	6
higgsboson.cern	6
sparks.cern	6
awake.cern	6
flair.cern	6
scientific-info.cern	6
technology.cern	6
knowledge.cern	6
accelerators.cern	6
staff-association.cern	6
open-quantum-institute.cern	6
chis.cern	6
news.cern	6
press.cern	6
particles.cern	6
norway.cern	6
isolde.cern	6
belgium.cern	6
oqi.cern	6
voisins.cern	6
united-states.cern	6

Issuer (CA)	Certs
Sectigo	1

Forward-DNS crawler hasn't resolved enough .cern apexes to BGP-attributable IPs.

Body-fetcher hasn't covered enough .cern sites yet for stack patterns to emerge.

ℹ Coverage will improve significantly once CZDS zone-file access is granted for this TLD.