docs.cern.ch - dns.ninja
docs.cern.ch
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ext-dns-1.cern.ch ⭐ ⚠️ Not in parent delegation | ||||||
| A | 2001:1458:1:1::5🇨🇭 CERN2001:1458::/32 European Organization for Nuclear Research | ||||||
| PTR | ext-dns-1.cern.ch | ||||||
| A | 192.65.187.5🇨🇭 CERN192.65.184.0/21 -BLK2 | ||||||
| PTR | ext-dns-1.cern.ch | ||||||
| NS | ext-dns-2.cern.ch ⚠️ Not in parent delegation | ||||||
| A | 2001:1458:1:2::100:85🇨🇭 CERN2001:1458::/32 European Organization for Nuclear Research | ||||||
| PTR | ext-dns-2.cern.ch | ||||||
| A | 192.91.245.85🇨🇭 CERN192.91.244.0/23 - European Laboratory for Particle Physics CH-1211 Geneva 23, Switzerland | ||||||
| PTR | ext-dns-2.cern.ch | ||||||
| SOA | ext-dns-1.cern.chexternal-dns@cern.ch serial=4087 | ||||||
cern.ch
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2001:1458:d00:3c::100:2f9🇨🇭 CERN2001:1458::/32 European Organization for Nuclear Research | ||||||
| A | 188.184.77.250🇨🇭 CERN188.184.0.0/16 -GPN2 | ||||||
| NS | ext-dns-1.cern.ch ⭐ | ||||||
| NS | ext-dns-2.cern.ch | ||||||
| NS | scsnms.switch.ch | ||||||
| MX | cern-ch.mail.protection.outlook.com ⭐ | ||||||
| TXT | mistral-domain-verification=3a255465ec599b8016fb91a2f8563cc304e3b95d | ||||||
| TXT | anthropic-domain-verification-4kfdsh=uvjsOh2bjwteama1zHsw7FZtw | ||||||
| TXT | cursor-domain-verification-8t0p9r=J6wFIABgbtZfHacKasG8HDZ1p | ||||||
| TXT | autodesk-domain-verification=5Lt81tqLuEgD4wCC73YQ | ||||||
| TXT | MS=ms44269116 | ||||||
| TXT | openai-domain-verification=dv-R5PuLWpZKT8QhVzrlbLDHvBz | ||||||
| TXT | v=spf1 include:spf.cern.ch ?all | ||||||
| TXT | sinch-domain-verification=1fa8887b-9312-4ca2-85f8-75f7c1ba81fd | ||||||
| TXT | google-site-verification=aoFc91q4kA9Xp_-Z_AFY1gI0AmXpTXIMcGseZfvH0J8 | ||||||
| TXT | goqTmP4CYqgXEPONka9g8FCGD4vpvjieG4RI5NLxYZsBh/y5p88K9ym3zIFcLVbaYQdJkdhfYcjAD... | ||||||
| SOA | ext-dns-1.cern.chexternal-dns@cern.ch serial=2013765416 | ||||||
rank #1180 globally
rank #4 in the tld
WOT: SAFE (88/100)
📈 Tranco rank: #2,757
Subdomains
atlas-software.docs.cern.ch |
Same first word
Similar names
DNS History
2 records (2 active, 0 former)
●NSext-dns-1.cern.ch2026-03-16 → 2026-06-17 · 2 obs
● 2026-06-17 13:48:12
●NSext-dns-2.cern.ch2026-03-16 → 2026-06-17 · 2 obs
● 2026-06-17 13:48:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ch | a.nic.ch, b.nic.ch, d.nic.ch, e.nic.ch... | - |
| cern.ch | ext-dns-2.cern.ch, scsnms.switch.ch, ext-dns-1.cern.ch | 6 records |
✅ Authoritative Response
Server:192.91.245.85
NS records: ext-dns-2.cern.ch, scsnms.switch.ch, ext-dns-1.cern.ch
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cern.ch (unsigned zone)
⏱️ Timing
Total: 521ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | ext-dns-2.cern.ch, ext-dns-1.cern.ch |
| SOA | 1 | ext-dns-1.cern.ch external-dns.cern.ch |
📌 Glue Records Collected
Total: 6
In-bailiwick: 4 (ext-dns-2.cern.ch, ext-dns-1.cern.ch, ext-dns-2.cern.ch...)
Out-of-bailiwick: 2 (scsnms.switch.ch, scsnms.switch.ch)
Analysis
Hierarchy
atlas-software.docs.cern.ch is a subdomain of docs.cern.ch.
Name Servers
Two name servers handle the delegation for docs.cern.ch: ext-dns-1.cern.ch and ext-dns-2.cern.ch.
docs.cern.ch shares its NS records with other domains, for example cms.cern, about.cern, europeanstrategy.cern and two others.
The name servers of docs.cern.ch overlap at least partially with those of other domains — among them 158.16.192.in-addr.arpa, 167.190.194.in-addr.arpa, isupportfordementia.com and two more.
These name servers commonly appear in delegations together with scsnms.switch.ch, ip-cahcp-1.cern.ch, ip-cahcp-2.cern.ch and 7 other.
ext-dns-1.cern.ch and ext-dns-2.cern.ch both carry two IP addresses. The A records for ext-dns-1.cern.ch are 192.65.187.5 and 2001:1458:1:1::5; the A records for ext-dns-2.cern.ch are 192.91.245.85 and 2001:1458:1:2::100:85.