technology.cern - dns.ninja
technology.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=1783663395 | ||||||
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSext-dns-1.cern.ch2026-02-16 → 2026-07-10 · 2 obs
● 2026-07-10 06:09:46
●NSext-dns-2.cern.ch2026-02-16 → 2026-07-10 · 2 obs
● 2026-07-10 06:09:46
●A137.138.6.312026-02-16 → 2026-07-10 · 2 obs
● 2026-07-10 06:09:46
●A2001:1458:201:8b::100:1c82026-02-16 → 2026-07-10 · 2 obs
● 2026-07-10 06:09:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cern | c0.nic.cern, a0.nic.cern, a2.nic.cern, b0.nic.cern | 8 records |
| technology.cern | ext-dns-1.cern.ch, ext-dns-2.cern.ch | - |
✅ Authoritative Response
Server:192.91.245.85
NS records: ext-dns-1.cern.ch, ext-dns-2.cern.ch
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for technology.cern (unsigned zone)
⏱️ Timing
Total: 887ms | 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 (c0.nic.cern, b0.nic.cern, a2.nic.cern...)
Analysis
IP Addresses
technology.cern has two IP addresses: 137.138.6.31 and 2001:1458:201:8b::100:1c8
Two other host names, along with isseg.eu, education.cern and cixp.org, also share IP numbers with technology.cern.
Name Servers
The NS records for technology.cern delegate to ext-dns-1.cern.ch and ext-dns-2.cern.ch.
technology.cern shares its NS records with other domains, for example paas-apps-shard-4.cern.ch, ifast-project.eu, webfest.cern and two others.
The name servers of technology.cern overlap at least partially with those of other domains — among them 1.0.0.5.8.3.7.0.1.0.0.2.ip6.arpa, 152.12.194.in-addr.arpa, 83.48.193.in-addr.arpa 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 resolves to 192.65.187.5 and 2001:1458:1:1::5. Likewise, ext-dns-2.cern.ch resolves to 192.91.245.85 and 2001:1458:1:2::100:85 — two IP addresses apiece.