openscience.cern - dns.ninja
openscience.cern
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2001:1458:d00:3c::100:d7🇨🇭 CERN2001:1458::/32 European Organization for Nuclear Research | ||||||
| PTR | lbaas-fc36cd0e-c9d9-466e-9869-b292a072f417.cern.ch | ||||||
| A | 188.184.76.146🇨🇭 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 | ||||||
| SOA | ext-dns-1.cern.chexternal-dns@cern.ch 2014-05-15 #10 | ||||||
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=1780542987 | ||||||
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSext-dns-1.cern.ch2026-05-27 → 2026-06-04 · 2 obs
● 2026-06-04 03:22:12
●NSext-dns-2.cern.ch2026-05-27 → 2026-06-04 · 2 obs
● 2026-06-04 03:22:12
●A188.184.76.1462026-05-27 → 2026-06-04 · 2 obs
● 2026-06-04 03:22:12
●A2001:1458:d00:3c::100:d72026-05-27 → 2026-06-04 · 2 obs
● 2026-06-04 03:22:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cern | c0.nic.cern, b0.nic.cern, a0.nic.cern, a2.nic.cern | 8 records |
| openscience.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 openscience.cern (unsigned zone)
⏱️ Timing
Total: 806ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 188.184.76.146 |
| AAAA | 1 | 2001:1458:d00:3c::100:d7 |
| 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
openscience.cern points to two IP numbers: 188.184.76.146 and 2001:1458:d00:3c::100:d7.
Two other host names, along with ifast-project.eu, webfest.cern and cms.cern, also share IP numbers with openscience.cern.
Name Servers
Two name servers handle the delegation for openscience.cern: ext-dns-1.cern.ch and ext-dns-2.cern.ch.
openscience.cern shares its NS records with other domains, for example getindico.com, cern70.cern, united-states.cern and two others.
openscience.cern has at least partial name server overlap with other domains, such as 187.65.192.in-addr.arpa, 160.16.192.in-addr.arpa, edna-site.org and two others.
These name servers co-occur with scsnms.switch.ch, ip-cahcp-2.cern.ch, ip-cahcp-1.cern.ch and seven other name servers on a regular basis.
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.