particles.cern - robtex.com
particles.cern
| 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 | ||||||
| SOA | ext-dns-1.cern.chexternal-dns@cern.ch 2019-05-20 #2 | ||||||
cern
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.nic.cern ⭐ | ||||||
| NS | a2.nic.cern | ||||||
| NS | b0.nic.cern | ||||||
| NS | c0.nic.cern | ||||||
| SOA | a0.nic.cernhostmaster@donuts.email serial=1777117550 | ||||||
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSext-dns-1.cern.ch2026-04-23 → 2026-04-25 · 2 obs
● 2026-04-25 12:02:24
●NSext-dns-2.cern.ch2026-04-23 → 2026-04-25 · 2 obs
● 2026-04-25 12:02:24
●A137.138.6.312026-04-23 → 2026-04-25 · 2 obs
● 2026-04-25 12:02:24
●A2001:1458:201:8b::100:1c82026-04-23 → 2026-04-25 · 2 obs
● 2026-04-25 12:02:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cern | a0.nic.cern, a2.nic.cern, b0.nic.cern, c0.nic.cern | 8 records |
| particles.cern | ext-dns-2.cern.ch, ext-dns-1.cern.ch | - |
✅ Authoritative Response
Server:192.65.187.5
NS records: ext-dns-2.cern.ch, ext-dns-1.cern.ch
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for particles.cern (unsigned zone)
⏱️ Timing
Total: 860ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 137.138.6.31 |
| AAAA | 1 | 2001:1458:201:8b::100:1c8 |
| 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: 8
In-bailiwick: 8 (a0.nic.cern, a0.nic.cern, a2.nic.cern...)
Analysis
IP Addresses
particles.cern points to two IP numbers: 2001:1458:201:8b::100:1c8 and 137.138.6.31.
Other host names, for instance learn.cern, environment.cern, antimatter.cern, technology.cern and repository.cern share IP numbers with particles.cern.
Name Servers
particles.cern is delegated to two name servers: ext-dns-1.cern.ch and ext-dns-2.cern.ch.
particles.cern uses the same name server setup as other domains, for instance box.cern.ch, zenodo.eu, repository.cern, darkmatter.cern and db-lb-137.cern.ch.
particles.cern shares name servers with other domains at least partially, for instance web.cern.ch, ill.fr, 87.48.193.in-addr.arpa, 103.48.193.in-addr.arpa and 183.65.192.in-addr.arpa.
these name servers are commonly used with the name servers scsnms.switch.ch, ip-cahcp-1.cern.ch, ip-cahcp-2.cern.ch, ccpntc3.in2p3.fr, ccpnvx.in2p3.fr, ns0.diamond.ac.uk, ns1.diamond.ac.uk, whqdns1.who.int, whqdns2.who.int and whqdns3.who.int.
Host names with two IP numbers:
The host ext-dns-1.cern.ch points to 2001:1458:1:1::5 and 192.65.187.5.
The host ext-dns-2.cern.ch points to 2001:1458:1:2::100:85 and 192.91.245.85.