cernvm.cern - dns.ninja
cernvm.cern
| DNSSEC | ⚠️ Not signed | ||||||
| A | 188.184.161.78🇨🇭 CERN188.184.0.0/16 -GPN2 | ||||||
| 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 | ||||||
| MX | cernmxgwlb.cern.ch ⭐ | ||||||
| SOA | ext-dns-1.cern.chexternal-dns@cern.ch 2016-08-11 #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=1785884403 | ||||||
Same first word
Similar names
DNS History
5 records (4 active, 1 former)
●NSext-dns-1.cern.ch2016-12-13 → 2026-08-04 · 2 obs
● 2026-08-04 23:10:50
●NSext-dns-2.cern.ch2016-12-13 → 2026-08-04 · 2 obs
● 2026-08-04 23:10:50
●MXcernmxgwlb.cern.ch2016-12-13 → 2026-08-04 · 2 obs
● 2026-08-04 23:10:50
○A128.142.132.1392016-12-13 → 2017-09-17 · 4 obs
● 2017-09-17 23:47:08
○ 2026-03-02 02:04:54
○ 2026-08-04 23:10:50
●A188.184.161.782026-03-02 → 2026-08-04 · 3 obs
● 2026-03-02 02:04:54
● 2026-08-04 23:10:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cern | b0.nic.cern, a0.nic.cern, a2.nic.cern, c0.nic.cern | 8 records |
| cernvm.cern | 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 cernvm.cern (unsigned zone)
⏱️ Timing
Total: 2052ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 188.184.161.78 |
| NS | 2 | ext-dns-2.cern.ch, ext-dns-1.cern.ch |
| MX | 1 | cernmxgwlb.cern.ch (pri: 20) |
| SOA | 1 | ext-dns-1.cern.ch external-dns.cern.ch |
📌 Glue Records Collected
Total: 8
In-bailiwick: 8 (a0.nic.cern, a2.nic.cern, b0.nic.cern...)
Analysis
IP Addresses
cernvm.cern directs to one IP number, which is 188.184.161.78.
Name Servers
Two name servers handle the delegation for cernvm.cern: ext-dns-1.cern.ch and ext-dns-2.cern.ch.
cernvm.cern has the same name server delegation as a number of other domains, such as db-lb-196.cern.ch, app-catalogue-apps-lb-home.cern.ch, lhcathome.cern.ch and two more.
The name servers of cernvm.cern overlap at least partially with those of other domains — among them 91.48.193.in-addr.arpa, cern.ch, 161.16.192.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 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.
Mail Servers
cernvm.cern routes its mail through a single mail server, cernmxgwlb.cern.ch.
cernvm.cern has the same mail server arrangement as a number of other domains, for example getindico.io, getindico.com, compass.cern and two more.