cern - robtex.com
cern
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.nic.cern ⭐ | ||||||
| A | 2a01:8840:da::1🇮🇪 AFILIAS-NST-ALTDB2a01:8840:da::/48 Afilias NS103 A0 | ||||||
| PTR | a0.nic.cern | ||||||
| A | 65.22.224.1🇺🇸 AFILIAS-NST-ALTDB65.22.224.0/24 Afilias, Inc. | ||||||
| PTR | a0.nic.cern | ||||||
| NS | a2.nic.cern | ||||||
| A | 2a01:8840:dd::1🇮🇪 AFiLIAS-SECONDARY-DNS2a01:8840:dd::/48 Afilias NS103 A2 | ||||||
| PTR | a2.nic.cern | ||||||
| A | 65.22.227.1🇺🇸 AFiLIAS-SECONDARY-DNS65.22.227.0/24 Afilias, Inc. | ||||||
| PTR | a2.nic.cern | ||||||
| NS | b0.nic.cern | ||||||
| A | 2a01:8840:db::1🇮🇪 AFILIAS-NST-ALTDB2a01:8840:db::/48 Afilias NS103 B0 | ||||||
| PTR | b0.nic.cern | ||||||
| A | 65.22.225.1🇺🇸 AFILIAS-NST-ALTDB65.22.225.0/24 Afilias, Inc. | ||||||
| PTR | b0.nic.cern | ||||||
| NS | c0.nic.cern | ||||||
| A | 2a01:8840:dc::1🇮🇪 AFILIAS-NST-ALTDB2a01:8840:dc::/48 Afilias NS103 C0 | ||||||
| PTR | c0.nic.cern | ||||||
| A | 65.22.226.1🇺🇸 AFILIAS-NST-ALTDB65.22.226.0/24 Afilias, Inc. | ||||||
| PTR | c0.nic.cern | ||||||
| SOA | a0.nic.cernhostmaster@donuts.email serial=1775929043 | ||||||
(root)
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.root-servers.net ⭐ ⚠️ Not in parent delegation | ||||||
| NS | b.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | c.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | d.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | e.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | f.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | g.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | h.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | i.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | j.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | k.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | l.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | m.root-servers.net ⚠️ Not in parent delegation | ||||||
| SOA | a.root-servers.netnstld@verisign-grs.com 2026-04-11 #0 | ||||||
Subdomains
cms.cern |
about.cern |
europeanstrategy.cern |
staff-association.cern |
incident.cern |
alumni.cern |
newsroom.cern |
home.cern |
giving.cern |
visit.cern |
scientific-info.cern |
education.cern |
clear.cern |
belgium.cern |
accelerators.cern |
www.cern |
openlab.cern |
cern70.cern |
united-states.cern |
teachers.cern |
voisins.cern |
ventureconnect.cern |
arts.cern |
isolde.cern |
careers.cern |
quantum.cern |
compass.cern |
kt.cern |
science.cern |
atlas.cern |
beams.cern |
library.cern |
press.cern |
root.cern |
nic.cern |
awake.cern |
neighbours.cern |
hse.cern |
oqi.cern |
learn.cern |
environment.cern |
cernvm.cern |
opendays.cern |
antimatter.cern |
technology.cern |
repository.cern |
darkmatter.cern |
webfest.cern |
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cern | b0.nic.cern, a0.nic.cern, a2.nic.cern, c0.nic.cern | 8 records |
✅ Authoritative Response
Server:65.22.227.1
NS records: b0.nic.cern, a0.nic.cern, a2.nic.cern, c0.nic.cern
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 127ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | c0.nic.cern, a2.nic.cern... |
| SOA | 1 | a0.nic.cern hostmaster.donuts.email |
📌 Glue Records Collected
Total: 8
In-bailiwick: 8 (c0.nic.cern, b0.nic.cern, a2.nic.cern...)
Analysis
Hierarchy
cern is a parent of cms.cern, about.cern, europeanstrategy.cern, staff-association.cern, incident.cern and a few other host names.
Name Servers
cern is delegated to four name servers: a0.nic.cern, a2.nic.cern, b0.nic.cern and c0.nic.cern.
cern at least partially shares name servers with other domains; for instance nic.cern.
Hosts with two IP numbers:
Host a0.nic.cern points to 2a01:8840:da::1 and 65.22.224.1
Host a2.nic.cern points to 2a01:8840:dd::1 and 65.22.227.1
Host b0.nic.cern points to 2a01:8840:db::1 and 65.22.225.1
Host c0.nic.cern points to 2a01:8840:dc::1 and 65.22.226.1