`kernel.org`

DNSSEC	⚠️ Not signed
A	2600:3c04:e001:324:0:1991:8:25^{🇨🇦 AKAMAI-LINODE-AP2600:3c04::/32 Akamai Technologies}
		PTR	`tor.source.kernel.org`
A	172.105.4.254^{🇨🇦 AKAMAI-LINODE-AP172.105.0.0/19 Akamai Technologies}
NS	`ns11.constellix.com` ⭐
		A	2600:180a:1001::1^{🇺🇸 Tiggee2600:180a:1001::/48 Constellix anycast network}
			PTR	`ns11.constellix.com`
		A	96.45.80.1^{🇺🇸 Tiggee96.45.80.0/24 route 96.45.80.0/24}
			PTR	`ns11.constellix.com`
NS	`ns21.constellix.com`
		A	2600:180b:2001::1^{🇺🇸 Tiggee2600:180b:2001::/48 Constellix anycast network}
			PTR	`ns21.constellix.com`
		A	46.31.236.1^{🇺🇸 Tiggee46.31.236.0/24 route 46.31.236.0/24}
NS	`ns31.constellix.com`
		A	2600:180c:3001::1^{🇺🇸 Tiggee2600:180c:3001::/48 Constellix anycast network}
			PTR	`ns31.constellix.com`
		A	43.247.170.1^{🇯🇵 Tiggee43.247.170.0/24 route 43.247.170.0/24}
			PTR	`ns31.constellix.com`
NS	`ns41.constellix.net`
		A	2600:180a:4001::1^{🇺🇸 Tiggee2600:180a:4001::/48 Constellix anycast network}
			PTR	`ns41.constellix.net`
		A	96.45.81.1^{🇺🇸 Tiggee96.45.81.0/24 route 96.45.81.0/24}
			PTR	`ns41.constellix.net`
NS	`ns51.constellix.net`
		A	2600:180b:5001::1^{🇺🇸 Tiggee2600:180b:5001::/48 Constellix anycast network}
			PTR	`ns51.constellix.net`
		A	46.31.237.1^{🇺🇸 Tiggee46.31.237.0/24 route 46.31.237.0/24}
			PTR	`ns51.constellix.net`
NS	`ns61.constellix.net`
		A	2600:180c:6001::1^{🇺🇸 Tiggee2600:180c:6001::/48 Constellix anycast network}
			PTR	`ns61.constellix.net`
		A	43.247.171.1^{🇯🇵 Tiggee43.247.171.0/24 route 43.247.171.0/24}
			PTR	`ns61.constellix.net`
MX	`smtp1.kernel.org` ⭐
		A	35.83.38.47^{🇺🇸 Amazon35.80.0.0/12 EC2 PDX prefix}
			PTR	`ec2-35-83-38-47.us-west-2.compute.amazonaws.com`
MX	`smtp2.kernel.org` ⭐
		A	35.85.114.177^{🇺🇸 Amazon35.80.0.0/12 EC2 PDX prefix}
			PTR	`ec2-35-85-114-177.us-west-2.compute.amazonaws.com`
MX	`smtp3.kernel.org` ⭐
		A	44.230.10.245^{🇺🇸 Amazon44.224.0.0/11 EC2 PDX prefix}
			PTR	`ec2-44-230-10-245.us-west-2.compute.amazonaws.com`
TXT	`v=spf1 include:_spf.kernel.org ~all`
TXT	`google-site-verification=nb4Wx5xBQM3b-a3OV2KSlPL786714Y7M6GfBtJf1opQ`
SOA	`ns11.constellix.com`dns@constellix.com serial=2015014890

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1786024027

rank #451 globally
rank #59 in the tld

kernel.org

The official home of the Linux kernel project, hosting the source code, release archives, and infrastructure used to develop and distribute the Linux kernel. It is operated by the Linux Kernel Organization, a nonprofit that supports kernel development infrastructure on behalf of the community and Linus Torvalds.

Key facts

Owner / operator: The Linux Kernel Organization, Inc. (a nonprofit set up to support kernel.org infrastructure)
TLD:.org— gTLD
Primary purpose: Distribution of Linux kernel source code, git repositories, and release tarballs
Status: active

History

Year	Event
1994	Domain registered to provide FTP distribution of Linux kernel sources
2011	Site infrastructure compromised in a security breach; systems taken offline for investigation
2012	Services restored with hardened infrastructure and mandatory signed-commit/PGP verification for kernel developers

Related domains

git.kernel.org— official Git repository hosting for the Linux kernel
www.kernel.org— main website with release information and download links

WOT: SAFE (95/100)
📈 Tranco rank: #1,254

PTR for

83.29.145.198.in-addr.arpa

Subdomains

wiki.kernel.org

patchwork.kernel.org

mail.kernel.org

smtp.kernel.org

cdn.kernel.org

lore.kernel.org

mirrors.kernel.org

rsync.kernel.org

subspace.kernel.org

linux.kernel.org

origin.kernel.org

archive.kernel.org

docs.kernel.org

bugzilla.kernel.org

git.kernel.org

smtp1.kernel.org

planet.kernel.org

gitolite.kernel.org

wireless.kernel.org

tiz-korg-mirror.kernel.org

android.kernel.org

lkml.kernel.org

www.kernel.org

smtp2.kernel.org

sfo-korg-mirror.kernel.org

vger.kernel.org

smtp3.kernel.org

Same first word

kernel.de

kernel.kiev.ua

kernel.hu

kernel.eu

kernel.center

kernel.is

kernel.works

kernel.net.uy

kernel.fish

kernel.mx

kernel.pics

kernel.com.uy

kernel.org.pl

kernel.gr

kernel.ee

kernel.international

kernel.fr

kernel.me

kernel.com.pl

kernel.wtf

kernel.co

kernel.com

kernel.ltd

kernel.co.nz

kernel.lu

kernel.se

kernel.sh

kernel.pro

kernel.online

kernel.ge

kernel.biz

kernel.rip

kernel.uy

kernel.technology

kernel.expert

kernel.land

kernel.fail

kernel.name

kernel.gr.jp

kernel.cn

kernel.dk

kernel.plus

kernel.sa

kernel.com.tw

kernel.us

kernel.at

kernel.support

kernel.kz

kernel.mk

kernel.ir

kernel.ro

kernel.edu

kernel.ws

kernel.ch

kernel.pl

kernel.care

kernel.sk

kernel.finance

kernel.zone

kernel.co.jp

kernel.krd

kernel.org

kernel.so

kernel.moe

kernel.debian.net

kernel.bz

kernel.io

kernel.su

kernel.si

kernel.cz

kernel.md

kernel.work

kernel.lv

kernel.net

kernel.pt

kernel.ua

kernel.com.ua

kernel.info

kernel.net.pl

kernel.world

kernel.it

kernel.services

kernel.uk

kernel.cl

kernel.ai

kernel.company

kernel.cc

kernel.no

kernel.lt

kernel.com.mk

Similar names

kelner.com

elkner.net

krenel.com

reelnk.com

kleren.info

kleenr.co

kerlen.com

kleren.ru

lenker.myshopify.com

elkner.pl

kelner.eu

kelner.nl

kleren.al

kenler.cn

lenker.co

lenker.at

kleenr.nl

kleenr.com

kelren.net

lenker.ru

lenker.com

lenker.cn

lenker.pl

kernle.org

kelner.de

lenrek.fr

lenrek.net

kelner.cz

kelner.ru

lenker.pro

elkner.com

renkle.com

lenker.cz

kelner.net

kerlen.de

lekner.com

kelner.us

kelner.no

lenker.de

lenker.org

lenker.eu

kleren.com

kernle.com

krenel.org

lenrek.com

lenker.name

kleren.pk

lekner.com.ua

kerenl.com

erklen.com

kernle.net

nerkel.com

kelner.fr

kelner.ca

enkler.com

kleenr.in

enkler.net

nerkle.com

kelner.co.il

erkeln.de

lenker.net

lenker.co.nz

kleren.co

elkner.de

kelner.se

lenker.ch

enkler.de

klener.com

nerkle.org

kelren.com

kelner.ee

kerlen.nl

renkel.com

DNS History

24 records (11 active, 13 former)

○NSns0.kernel.org2015-08-20 → 2017-02-12 · 4 obs

● 2015-08-20 08:27:46
● 2017-02-12 10:58:30
○ 2017-06-29 03:10:34
○ 2026-08-06 14:19:10

●NSns11.constellix.com2017-06-29 → 2026-08-06 · 3 obs

○ 2017-02-12 10:58:30
● 2017-06-29 03:10:34
● 2026-08-06 14:19:10

○NSns2.kernel.org2015-08-20 → 2017-02-12 · 4 obs

● 2015-08-20 08:27:46
● 2017-02-12 10:58:30
○ 2017-06-29 03:10:34
○ 2026-08-06 14:19:10

●NSns21.constellix.com2017-06-29 → 2026-08-06 · 3 obs

○ 2017-02-12 10:58:30
● 2017-06-29 03:10:34
● 2026-08-06 14:19:10

●NSns31.constellix.com2017-06-29 → 2026-08-06 · 3 obs

○ 2017-02-12 10:58:30
● 2017-06-29 03:10:34
● 2026-08-06 14:19:10

○NSns4.kernel.org2015-08-20 → 2017-02-12 · 4 obs

● 2015-08-20 08:27:46
● 2017-02-12 10:58:30
○ 2017-06-29 03:10:34
○ 2026-08-06 14:19:10

●NSns41.constellix.net2017-06-29 → 2026-08-06 · 3 obs

○ 2017-02-12 10:58:30
● 2017-06-29 03:10:34
● 2026-08-06 14:19:10

●NSns51.constellix.net2017-06-29 → 2026-08-06 · 3 obs

○ 2017-02-12 10:58:30
● 2017-06-29 03:10:34
● 2026-08-06 14:19:10

●NSns61.constellix.net2017-06-29 → 2026-08-06 · 3 obs

○ 2017-02-12 10:58:30
● 2017-06-29 03:10:34
● 2026-08-06 14:19:10

○MXbl-ckh-le.kernel.org2015-08-20 → 2017-02-12 · 4 obs

● 2015-08-20 08:27:46
● 2017-02-12 10:58:30
○ 2017-06-29 03:10:34
○ 2026-08-06 14:19:10

○MXmail.kernel.org2015-08-20 → 2021-07-22 · 4 obs

● 2015-08-20 08:27:46
● 2021-07-22 06:13:18
○ 2021-11-27 02:47:06
○ 2026-08-06 14:19:10

○MXns2.kernel.org2015-08-20 → 2017-02-12 · 4 obs

● 2015-08-20 08:27:46
● 2017-02-12 10:58:30
○ 2017-06-29 03:10:34
○ 2026-08-06 14:19:10

○MXns4.kernel.org2015-08-20 → 2016-11-06 · 4 obs

● 2015-08-20 08:27:46
● 2016-11-06 05:54:02
○ 2016-12-31 03:09:56
○ 2026-08-06 14:19:10

●MXsmtp1.kernel.org2021-11-27 → 2026-08-06 · 3 obs

○ 2021-07-22 06:13:18
● 2021-11-27 02:47:06
● 2026-08-06 14:19:10

●MXsmtp2.kernel.org2021-11-27 → 2026-08-06 · 3 obs

○ 2021-07-22 06:13:18
● 2021-11-27 02:47:06
● 2026-08-06 14:19:10

●MXsmtp3.kernel.org2021-11-27 → 2026-08-06 · 3 obs

○ 2021-07-22 06:13:18
● 2021-11-27 02:47:06
● 2026-08-06 14:19:10

○A149.20.4.692015-08-20 → 2017-02-12 · 4 obs

● 2015-08-20 08:27:46
● 2017-02-12 10:58:30
○ 2017-06-29 03:10:34
○ 2026-08-06 14:19:10

●A172.105.4.2542026-02-16 → 2026-08-06 · 3 obs

○ 2021-11-27 02:47:06
● 2026-02-16 05:19:12
● 2026-08-06 14:19:10

○A198.145.20.1402015-08-20 → 2017-02-12 · 4 obs

● 2015-08-20 08:27:46
● 2017-02-12 10:58:30
○ 2017-06-29 03:10:34
○ 2026-08-06 14:19:10

○A198.145.29.832017-06-29 → 2021-11-27 · 5 obs

○ 2017-02-12 10:58:30
● 2017-06-29 03:10:34
● 2021-11-27 02:47:06
○ 2026-02-16 05:19:12
○ 2026-08-06 14:19:10

○A199.204.44.1942015-08-20 → 2017-02-12 · 4 obs

● 2015-08-20 08:27:46
● 2017-02-12 10:58:30
○ 2017-06-29 03:10:34
○ 2026-08-06 14:19:10

○A2001:4f8:1:10:0:1991:8:252015-08-20 → 2017-02-12 · 4 obs

● 2015-08-20 08:27:46
● 2017-02-12 10:58:30
○ 2017-06-29 03:10:34
○ 2026-08-06 14:19:10

●A2600:3c04:e001:324:0:1991:8:252026-02-16 → 2026-08-06 · 3 obs

○ 2021-11-27 02:47:06
● 2026-02-16 05:19:12
● 2026-08-06 14:19:10

○A2620:3:c000:a:0:1991:8:252015-08-20 → 2017-02-12 · 4 obs

● 2015-08-20 08:27:46
● 2017-02-12 10:58:30
○ 2017-06-29 03:10:34
○ 2026-08-06 14:19:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org	-
kernel.org	ns11.constellix.com, ns51.constellix.net, ns31.constellix.com, ns41.constellix.net...	-

✅ Authoritative Response

Server:96.45.80.1

NS records: ns11.constellix.com, ns51.constellix.net, ns31.constellix.com, ns41.constellix.net, ns21.constellix.com, ns61.constellix.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for kernel.org (unsigned zone)

⏱️ Timing

Total: 376ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`172.105.4.254`
AAAA	1	`2600:3c04:e001:324:0:1991:8:25`
NS	6	`ns31.constellix.com, ns41.constellix.net...`
MX	3	`smtp1.kernel.org (pri: 10), smtp2.kernel.org (pri: 10)...`
TXT	2	`v=spf1 include:_spf.kernel.org ~all, google-site-verification=nb4Wx5xBQM3b-a3`
SOA	1	`ns11.constellix.com dns.constellix.com`

Analysis

Hierarchy

wiki.kernel.org, patchwork.kernel.org, mail.kernel.org, smtp.kernel.org, cdn.kernel.org and a few other host names are all children of kernel.org.

IP Addresses

kernel.org has two IP addresses: 172.105.4.254 and 2600:3c04:e001:324:0:1991:8:25

tor.source.kernel.org is an example of another host name that shares IP numbers with kernel.org.

Name Servers

kernel.org has 6 name servers — ns11.constellix.com, ns21.constellix.com, ns31.constellix.com and 3 others.

The name servers of kernel.org overlap at least partially with those of other domains — among them compleost.com, ent-sleep.com, craftquickies.com and two more.

The name servers ns41.constellix.net, ns51.constellix.net and ns61.constellix.net are commonly seen alongside these name servers.

Host names pointing to two IP addresses:

ns11.constellix.com resolves to 96.45.80.1 and 2600:180a:1001::1.

ns21.constellix.com resolves to 46.31.236.1 and 2600:180b:2001::1.

ns31.constellix.com resolves to 43.247.170.1 and 2600:180c:3001::1.

ns41.constellix.net resolves to 96.45.81.1 and 2600:180a:4001::1.

ns51.constellix.net resolves to 46.31.237.1 and 2600:180b:5001::1.

ns61.constellix.net resolves to 43.247.171.1 and 2600:180c:6001::1.

Mail Servers

Mail for kernel.org is routed through three mail servers — smtp1.kernel.org, smtp2.kernel.org and smtp3.kernel.org.

Each of the three hostnames points to exactly one IP address: smtp1.kernel.org points to 35.83.38.47, smtp2.kernel.org points to 35.85.114.177 and smtp3.kernel.org points to 44.230.10.245.

kernel.org - robtex.com

kernel.org

org

kernel.org

Key facts

History

Related domains

PTR for

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`kernel.org`

`org`