openlab.cern - dns.ninja
openlab.cern
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2001:1458:201:4::100:324🇨🇭 CERN2001:1458::/32 European Organization for Nuclear Research | ||||||
| PTR | lbaas-6f35e927-bae9-4215-978e-2451b7af9954.cern.ch | ||||||
| A | 137.138.226.190🇨🇭 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 2025-04-08 #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=1786512873 | ||||||
rank #9 in the tld
Same first word
Similar names
DNS History
9 records (4 active, 5 former)
●NSext-dns-1.cern.ch2016-12-28 → 2026-08-12 · 2 obs
● 2026-08-12 05:41:44
●NSext-dns-2.cern.ch2016-12-28 → 2026-08-12 · 2 obs
● 2026-08-12 05:41:44
○MXcernmxgwlb.cern.ch2016-12-28 → 2018-12-16 · 4 obs
● 2018-12-16 05:26:44
○ 2026-03-02 02:04:52
○ 2026-08-12 05:41:44
●A137.138.226.1902026-03-02 → 2026-08-12 · 3 obs
● 2026-03-02 02:04:52
● 2026-08-12 05:41:44
○A188.184.37.2052016-12-28 → 2016-12-28 · 3 obs
○ 2018-12-16 05:26:44
○ 2026-08-12 05:41:44
○A188.184.37.2192018-12-16 → 2018-12-16 · 4 obs
● 2018-12-16 05:26:44
○ 2026-03-02 02:04:52
○ 2026-08-12 05:41:44
●A2001:1458:201:4::100:3242026-03-02 → 2026-08-12 · 3 obs
● 2026-03-02 02:04:52
● 2026-08-12 05:41:44
○A2001:1458:201:b0::100:1b2018-12-16 → 2018-12-16 · 4 obs
● 2018-12-16 05:26:44
○ 2026-03-02 02:04:52
○ 2026-08-12 05:41:44
○A2001:1458:201:b0::100:d2016-12-28 → 2016-12-28 · 3 obs
○ 2018-12-16 05:26:44
○ 2026-08-12 05:41:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cern | b0.nic.cern, a2.nic.cern, a0.nic.cern, c0.nic.cern | 8 records |
| openlab.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 openlab.cern (unsigned zone)
⏱️ Timing
Total: 719ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 137.138.226.190 |
| AAAA | 1 | 2001:1458:201:4::100:324 |
| NS | 2 | ext-dns-1.cern.ch, ext-dns-2.cern.ch |
| 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
openlab.cern resolves to the IP addresses 137.138.226.190 and 2001:1458:201:4::100:324
www.scienceinschool.org, cernandsocietyfoundation.cern, europeanstrategy.cern and two other host names share IP numbers with openlab.cern.
Name Servers
DNS delegation for openlab.cern points to two name servers: ext-dns-1.cern.ch and ext-dns-2.cern.ch.
openlab.cern uses the same name servers as several other domains — among them indico-software.org, panda-lb.cern.ch, learn.cern and two more.
openlab.cern has at least partial name server overlap with other domains, such as ipv6.cern.ch, 45.32.198.in-addr.arpa, 239.91.192.in-addr.arpa and two others.
scsnms.switch.ch, ip-cahcp-1.cern.ch and ip-cahcp-2.cern.ch — plus 7 other name servers — are commonly paired with these name servers.
ext-dns-1.cern.ch directs to 192.65.187.5 and 2001:1458:1:1::5. ext-dns-2.cern.ch directs to 192.91.245.85 and 2001:1458:1:2::100:85. Each host name carries two IP addresses.