`environment.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.ch`external-dns@cern.ch serial=3

`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.cern`hostmaster@donuts.email serial=1778335156

Same first word

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environment.lv

environment.pe

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environment.org.ly

environment.care

environment.ru

environment.pro

environment.gov.bm

environment.me

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environment.gov.ly

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environment.info

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environment.gov.fj

environment.gov.mu

environment.sa.gov.au

environment.gov.ps

environment.ltd

environment.agency

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environment.lt

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environment.systems

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environment.gov.rw

DNS History

4 records (4 active, 0 former)

●NSext-dns-1.cern.ch2026-02-16 → 2026-05-09 · 2 obs

● 2026-02-16 09:50:16
● 2026-05-09 14:06:44

●NSext-dns-2.cern.ch2026-02-16 → 2026-05-09 · 2 obs

● 2026-02-16 09:50:16
● 2026-05-09 14:06:44

●A137.138.6.312026-02-16 → 2026-05-09 · 2 obs

● 2026-02-16 09:50:16
● 2026-05-09 14:06:44

●A2001:1458:201:8b::100:1c82026-02-16 → 2026-05-09 · 2 obs

● 2026-02-16 09:50:16
● 2026-05-09 14:06:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cern	c0.nic.cern, b0.nic.cern, a0.nic.cern, a2.nic.cern	8 records
environment.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 environment.cern (unsigned zone)

⏱️ Timing

Total: 880ms | 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

environment.cern resolves to two IP numbers: 2001:1458:201:8b::100:1c8 and 137.138.6.31.

other host names including repository.cern, darkmatter.cern, paas-apps-lb-1.cern.ch, about.cern and cern.org share IP numbers with environment.cern.

Name Servers

environment.cern is delegated to two name servers ext-dns-1.cern.ch and ext-dns-2.cern.ch.

environment.cern shares the same name server setup as other domains, for instance invenio-software.org, quantum.cern, cds-lb.cern.ch, compass.cern and bigpanda-lb.cern.ch.

environment.cern at least partially shares name servers with other domains, for instance 142.128.in-addr.arpa, 158.134.in-addr.arpa, 96.48.193.in-addr.arpa, 161.190.194.in-addr.arpa and embl.fr.

These name servers are commonly used with the following 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 name ext-dns-1.cern.ch points to 2001:1458:1:1::5 and 192.65.187.5; the host name ext-dns-2.cern.ch points to 2001:1458:1:2::100:85 and 192.91.245.85.

environment.cern - robtex.com