cern.eu - dns.ninja
cern.eu
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2001:1458:201:8b::100:1c8🇨🇭 CERN2001:1458::/32 European Organization for Nuclear Research | ||||||
| PTR | lbaas-ed6043ec-be11-40f8-b8b7-ec7cedb5fdd9.cern.ch | ||||||
| A | 137.138.6.31🇨🇭 CERN137.138.0.0/16 -LAN1 | ||||||
| NS | ext-dns-1.cern.ch ⭐ | ||||||
| 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 | ||||||
| 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 | ||||||
| NS | scsnms.switch.ch ⚠️ Not in parent delegation | ||||||
| A | 2001:620:0:ff::a7🇨🇭 Switch2001:620::/32 SWITCH, The Swiss Education & Research Network | ||||||
| PTR | scsnms.switch.ch | ||||||
| A | 130.59.31.26🇨🇭 Switch130.59.0.0/16 SWITCH-LAN | ||||||
| PTR | scsnms.switch.ch | ||||||
| SOA | ext-dns-1.cern.chexternal-dns@cern.ch 2014-05-15 #3 | ||||||
eu
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | si.dns.eu ⭐ | ||||||
| NS | be.dns.eu | ||||||
| NS | w.dns.eu | ||||||
| NS | x.dns.eu | ||||||
| NS | y.dns.eu | ||||||
| SOA | si.dns.eutech@eurid.eu serial=1124842484 | ||||||
Subdomains
www.cern.eu |
Same first word
Similar names
DNS History
7 records (5 active, 2 former)
●NSext-dns-1.cern.ch2015-09-03 → 2026-06-04 · 2 obs
● 2026-06-04 03:00:52
●NSext-dns-2.cern.ch2015-09-03 → 2026-06-04 · 2 obs
● 2026-06-04 03:00:52
○MXcernmxgwlb.cern.ch2015-09-03 → 2026-02-16 · 4 obs
● 2026-02-16 09:50:16
○ 2026-02-17 11:26:16
○ 2026-06-04 03:00:52
●A137.138.6.312026-02-16 → 2026-06-04 · 3 obs
● 2026-02-16 09:50:16
● 2026-06-04 03:00:52
○A188.184.9.2352015-09-03 → 2020-11-29 · 4 obs
● 2020-11-29 21:30:38
○ 2026-02-16 09:50:16
○ 2026-06-04 03:00:52
●A2001:1458:201:8b::100:1c82026-02-16 → 2026-06-04 · 3 obs
● 2026-02-16 09:50:16
● 2026-06-04 03:00:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| eu | x.dns.eu, be.dns.eu, y.dns.eu, w.dns.eu... | - |
| cern.eu | ext-dns-1.cern.ch, ext-dns-2.cern.ch | - |
✅ Authoritative Response
Server:192.65.187.5
NS records: ext-dns-1.cern.ch, ext-dns-2.cern.ch
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cern.eu (unsigned zone)
⏱️ Timing
Total: 2373ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 137.138.6.31 |
| AAAA | 1 | 2001:1458:201:8b::100:1c8 |
| NS | 3 | ext-dns-1.cern.ch, ext-dns-2.cern.ch... |
| SOA | 1 | ext-dns-1.cern.ch external-dns.cern.ch |
Analysis
Hierarchy
cern.eu is a parent domain of www.cern.eu.
IP Addresses
cern.eu points to two IP numbers: 137.138.6.31 and 2001:1458:201:8b::100:1c8.
Among the host names that share IP numbers with cern.eu are particles.cern, technology.cern, repository.cern and two others.
Name Servers
cern.eu is delegated to three name servers: ext-dns-1.cern.ch, ext-dns-2.cern.ch and scsnms.switch.ch.
cern.eu shares at least some of its name servers with other domains, including 60.5.193.in-addr.arpa, 97.48.193.in-addr.arpa, a.f.a.c.8.1.4.0.0.2.7.0.1.0.0.2.ip6.arpa and two others.
ip-cahcp-1.cern.ch, ip-cahcp-2.cern.ch and ccpntc3.in2p3.fr — plus seven other name servers — are routinely found together with these name servers.
ext-dns-1.cern.ch, ext-dns-2.cern.ch and scsnms.switch.ch each resolve to two IP addresses: ext-dns-1.cern.ch resolves to 192.65.187.5 and 2001:1458:1:1::5; ext-dns-2.cern.ch resolves to 192.91.245.85 and 2001:1458:1:2::100:85; scsnms.switch.ch resolves to 130.59.31.26 and 2001:620:0:ff::a7.