rt.gnu.org - dns.ninja

`rt.gnu.org`

DNSSEC	⚠️ Not signed
A	2001:470:142:5::47^{🇺🇸 FSF2001:470:142::/48 NET-2001-470-142---48-AS22989}
		PTR	`rt2p.fsf.org`
A	209.51.188.47^{🇺🇸 FSF209.51.188.0/24 NET-209-51-188-0-24-AS22989}
TXT	`v=spf1 redirect=gnu.org`

`gnu.org`

	DNSSEC	⚠️ Not signed
	A	2001:470:142:5::116^{🇺🇸 FSF2001:470:142::/48 NET-2001-470-142---48-AS22989}
	A	209.51.188.116^{🇺🇸 FSF209.51.188.0/24 NET-209-51-188-0-24-AS22989}
	NS	`ns1.gnu.org` ⭐
	NS	`ns2.gnu.org`
	NS	`ns4.gnu.org`
	MX	`eggs.gnu.org` ⭐
	TXT	`v=spf1 ip4:209.51.188.0/24 ip6:2001:470:142::/48 ip4:18.4.89.21 ip4:15.204.20...`
	SOA	`ns1.gnu.org`hostmaster@gnu.org 2026-05-18 #9

WOT: SAFE (95/100)
rank #111 globally
rank #12 in the tld
Semrush Rank:#13,643 Keywords:64,130 Traffic:167,161/mo
WOT: SAFE (95/100)
📈 Tranco rank: #336

GNU Project

gnu.org is the official website of the GNU Project, a free software operating system founded by Richard Stallman in January 1984. The name is a recursive acronym: "GNU's Not Unix." GNU provides a complete Unix-like operating system composed entirely of free software that respects users' freedom—the right to run, study, modify, and redistribute software.

Key Projects

GNU/Linux — The most widely used form of GNU, combining GNU software with the Linux kernel
GCC — The GNU Compiler Collection, a cornerstone of open-source development
GNU Emacs — Extensible, self-documenting text editor
GNU Hurd — GNU's own microkernel, development started in 1990

The project is supported by the Free Software Foundation (FSF), which advocates for software freedom worldwide.

Hosting & Infrastructure

Service	Details
Web/Mail	Self-hosted by FSF in the USA (209.51.188.0/24)
Nameservers	OVH (Canada & France): ns1.gnu.org, ns2.gnu.org, ns4.gnu.org
Mail Server	eggs.gnu.org (209.51.188.92)
DNSSEC	Not signed

Tranco Rank: #497 globally, #12 among .org domains

PTR for

212.28-208.156.94.74.in-addr.arpa

Same first word

rt.com.tr

rt.com.sa

rt.net

rt.fyi

rt.cc

rt.do

rt.com.co

rt.cx

rt.lc

rt.org.tr

rt.vg

rt.academy

rt.support

rt.wtf

rt.gy

rt.tel

rt.ht

rt.to

rt.sk

rt.ru

rt.com

rt.ua

rt.fm

rt.nu

rt.com.es

rt.dk

rt.sg

rt.com.au

rt.ink

rt.plus

rt.uk

rt.tr

rt.co.uk

rt.no

rt.center

rt.gov.sa

rt.md

rt.be

rt.su

rt.nl

rt.ca

rt.biz

rt.net.ua

rt.de

rt.lt

rt.org

rt.live

rt.com.tw

rt.hu

rt.eu

rt.lv

rt.com.ar

rt.sakura.ne.jp

rt.cr

rt.training

rt.je

rt.co.il

rt.is

rt.by

rt.cm

rt.co

rt.ee

rt.gg

rt.org.ua

rt.fi

rt.ms

rt.com.br

rt.ae

rt.ac.th

rt.hk

rt.world

rt.rs

rt.chat

rt.bh

rt.systems

rt.at

rt.tc

rt.gw

rt.fr

rt.x0.com

rt.inf.br

rt.org.ru

rt.cn

rt.ro

rt.ma

rt.xen.prgmr.com

Similar names

tr.capital

tr.mba

tr

tr.am

tr.taxi

tr.vc

tr.com.pl

tr.properties

tr.la

tr.ro

tr.link

tr.hu

tr.is

tr.gl

tr.edgesuite.net

tr.systems

tr.cx

tr.net.tr

tr.nl

tr.s3.eu-central-1.amazonaws.com

tr.com.mx

tr.kg

tr.s3-website-eu-west-1.amazonaws.com

tr.fr

tr.ge

tr.cm

tr.nu

tr.university

tr.cl

tr.gs

tr.ht

tr.land

tr.ca

tr.co.kr

tr.eco.br

tr.church

tr.gz.cn

tr.center

tr.tv

tr.training

tr.energy

tr.cn

tr.gen.tr

tr.memorial

tr.org

tr.tc

tr.ph

tr.fi

tr.nhs.uk

tr.su

tr.akamaized.net

tr.k12.in.us

tr.com.cn

tr.s3-website-us-east-1.amazonaws.com

tr.gp

tr.com.au

tr.ink

DNS History

4 records (2 active, 2 former)

●A2001:470:142:5::472026-02-16 → 2026-06-14 · 3 obs

○ 2021-11-12 06:24:30
● 2026-02-16 11:01:22
● 2026-06-14 01:00:00

●A209.51.188.472026-02-16 → 2026-06-14 · 3 obs

○ 2021-11-12 06:24:30
● 2026-02-16 11:01:22
● 2026-06-14 01:00:00

○A74.94.156.2122021-11-12 → 2021-11-12 · 4 obs

○ 2017-01-13 18:44:54
● 2021-11-12 06:24:30
○ 2026-02-16 11:01:22
○ 2026-06-14 01:00:00

○A74.94.156.2132015-06-05 → 2017-01-13 · 4 obs

● 2015-06-05 04:07:26
● 2017-01-13 18:44:54
○ 2021-11-12 06:24:30
○ 2026-06-14 01:00:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, b0.org.afilias-nst.org, d0.org.afilias-nst.org	-
gnu.org	ns1.gnu.org, ns4.gnu.org, ns2.gnu.org	6 records

✅ Authoritative Response

Server:192.99.37.66

NS records: ns1.gnu.org, ns4.gnu.org, ns2.gnu.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for gnu.org (unsigned zone)

⏱️ Timing

Total: 178ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`209.51.188.47`
AAAA	1	`2001:470:142:5::47`
TXT	1	`v=spf1 redirect=gnu.org`

📌 Glue Records Collected

Total: 6

In-bailiwick: 6 (ns1.gnu.org, ns2.gnu.org, ns4.gnu.org...)

Analysis

IP Addresses

rt.gnu.org points to two IP numbers: 209.51.188.47 and 2001:470:142:5::47.

Host names like rt2p.gnu.org are further examples that share IP numbers with rt.gnu.org.