`root.cern`

DNSSEC	⚠️ Not signed
A	2001:1458:201:8b::100:23b^{🇨🇭 CERN2001:1458::/32 European Organization for Nuclear Research}
		PTR	`lbaas-630cc22c-65d0-4b63-90ae-ea57b4b05b81.cern.ch`
A	137.138.6.72^{🇨🇭 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 2025-03-25 #1

`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=1776944648

rank #197363 globally
rank #3 in the tld
this domain is "root"📈 Tranco rank: #282,186

Same first word

root.ba

root.domains

root.fan

root.id.au

root.world

root.farm

root.la

root.si

root.gy

root.pp.ua

root.to

root.cl

root.kinghost.net

root.rs

root.report

root.ms

root.consulting

root.gmbh

root.kim

root.camp

root.od.ua

root.capital

root.cn

root.cat

root.tv

root.im

root.uz

root.md

root.media

root.supplies

root.eu.com

root.ax

root.am

root.kr

root.net

root.cx

root.cc

root.co

root.ai

root.gr

root.info

root.ooo

root.org.za

root.works

root.bet

root.net.nz

root.id

root.ua

root.chat

root.ceo

root.ch

root.sx

root.nl

root.tf

root.network

root.town

root.so

root.style

root.business

root.marketing

root.monster

root.biz.id

root.cern

root.hm

root.ly

root.cz

root.fr

root.ws

root.fund

root.pub

root.support

root.express

root.gen.tr

root.se

root.co.uk

root.at

root.in.th

root.net.ru

root.my.id

root.dyndns.org

root.vn.ua

root.ps

root.co.za

root.msk.ru

root.ca

root.su

root.ro

root.rent

root.ad

root.or.id

root.lt

root.st

root.co.il

root.community

root.engineering

root.lc

root.gs

root.fo

root.fm

root.sa

root.com.ua

root.com.py

root.is

root.ge

root.com.pl

root.com.tr

root.li

root.ist

root.me

root.gg

root.eti.br

root.it

root.wtf

root.org.pl

root.spb.ru

root.es

root.place

root.bg

root.ir

root.gov.kz

root.ae

root.com

root.de

root.hu

root.lu

root.agency

root.land

root.xyz

root.in

root.pk

root.vn

root.hk

root.io

root.ie

root.com.au

root.company

root.hr

root.ne.jp

root.in.ua

root.ru

root.koeln

root.eu

root.vg

root.sg

root.moscow

root.dyndns-ip.com

root.no

root.ee

root.sh

root.yt

root.my

root.lk

root.be

root.org

root.pl

root.vc

root.fyi

root.pt

root.com.mx

root.dk

root.uk.com

Similar names

ootr.org

toro.com.my

oort.biz

otro.net

toro.restaurant

troo.duckdns.org

toor.cn

toor.com.tr

ootr.com

orot.ru

toro.red

toro.nl

roto.cc

toor.pw

toro.foundation

troo.nl

toro.lu

otor.net

toro.co.it

toor.fr

otro.us

troo.ch

oort.com.br

toro.ru

orot.de

orto.com.br

toro.one

orot.tech

orot.tv

orot.pl

oort.it

toor.biz

orto.cz

toro.fr

toro.contractors

orto.co.jp

orto.nl

toro.gr

orto.by

toro.solutions

orto.sg

oort.com.cn

toro.lt

toro.mu

toor.camp

otro.world

toro.golf

troo.com

roto.se

roto.co.uk

toor.be

toro.mobi

orot.fr

roto.photography

toro.repair

otor.ru

roto.com.mx

toro.gripe

orto.net

toor.jp

toro.sl

toro.co.in

otor.fr

roto.lu

toor.in

roto.by

orto.salon

orot.net

toor.com

orto.biz

toro.net.nz

roto.dev

toor.su

toro.org

oort.eu

toro.de

toor.com.pl

toor.me

toro.co.uk

toro.construction

otro.me

roto.si

orto.de

orto.co.uk

troo.org

orto.co

DNS History

9 records (4 active, 5 former)

●NSext-dns-1.cern.ch2017-05-29 → 2026-04-23 · 2 obs

● 2017-05-29 00:02:16
● 2026-04-23 11:55:10

●NSext-dns-2.cern.ch2017-05-29 → 2026-04-23 · 2 obs

● 2017-05-29 00:02:16
● 2026-04-23 11:55:10

○MXcernmxgwlb.cern.ch2017-05-29 → 2020-12-05 · 4 obs

● 2017-05-29 00:02:16
● 2020-12-05 06:58:14
○ 2026-03-02 02:04:54
○ 2026-04-23 11:55:10

○A137.138.13.1432017-05-29 → 2017-05-29 · 3 obs

● 2017-05-29 00:02:16
○ 2020-11-29 21:33:32
○ 2026-04-23 11:55:10

○A137.138.18.2362020-11-29 → 2020-12-05 · 5 obs

○ 2017-05-29 00:02:16
● 2020-11-29 21:33:32
● 2020-12-05 06:58:14
○ 2026-03-02 02:04:54
○ 2026-04-23 11:55:10

●A137.138.6.722026-03-02 → 2026-04-23 · 3 obs

○ 2020-12-05 06:58:14
● 2026-03-02 02:04:54
● 2026-04-23 11:55:10

○A2001:1458:201:45::100:b2017-05-29 → 2017-05-29 · 3 obs

● 2017-05-29 00:02:16
○ 2020-11-29 21:33:32
○ 2026-04-23 11:55:10

●A2001:1458:201:8b::100:23b2026-03-02 → 2026-04-23 · 3 obs

○ 2020-12-05 06:58:14
● 2026-03-02 02:04:54
● 2026-04-23 11:55:10

○A2001:1458:201:ee::100:62020-11-29 → 2020-12-05 · 5 obs

○ 2017-05-29 00:02:16
● 2020-11-29 21:33:32
● 2020-12-05 06:58:14
○ 2026-03-02 02:04:54
○ 2026-04-23 11:55:10

🔍 DNS Trace

📋 Delegation Chain

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

⏱️ Timing

Total: 776ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`137.138.6.72`
AAAA	1	`2001:1458:201:8b::100:23b`
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 (a0.nic.cern, a0.nic.cern, a2.nic.cern...)

Analysis

IP Addresses

root.cern resolves to two IP numbers: 2001:1458:201:8b::100:23b and 137.138.6.72.

Other host names, for example webeos-apps-lb-1.cern.ch, www.nic.cern, nic.cern and lbaas-630cc22c-65d0-4b63-90ae-ea57b4b05b81.cern.ch share IP numbers with root.cern.

Name Servers

Two name servers ext-dns-1.cern.ch and ext-dns-2.cern.ch handle delegation for root.cern.

root.cern uses the same name server setup as other domains, for example isolde.cern, docs.cern.ch, paas-apps-shard-1.cern.ch, ippog.org and careers.cern.

root.cern partially shares name servers with other domains; examples include 68.70.192.in-addr.arpa, european-light-source.eu, cc.in2p3.fr, 156.16.192.in-addr.arpa and 99.48.193.in-addr.arpa.

These name servers are commonly used alongside 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:

ext-dns-1.cern.ch points to: 2001:1458:1:1::5 and 192.65.187.5

ext-dns-2.cern.ch points to: 2001:1458:1:2::100:85 and 192.91.245.85

root.cern - robtex.com

root.cern

cern