gnu.org

Technologies

Found on any of its indexed pages. Each one lists every other site that uses it.

Web servers

Apache

Tracking IDs

Analytics, ad and verification IDs in its source. Sites sharing one are usually run by the same people.

None found.

Contacts

Email addresses, phone links and social profiles it publishes.

Server

From the response headers and meta tags of its homepage.

Server

Apache

X-Powered-By

–

Generator

–

IP address

2001:470:142:5::116

Infrastructure

DNS, certificate and favicon, with when each was seen. Shared ones lead to the other sites behind them.

Addresses

209.51.188.1161 other site

2001:470:142:5::116

Mail (MX)

eggs.gnu.org1 other site

Name servers

ns1.gnu.org2 other sites

ns2.gnu.org2 other sites

ns4.gnu.org2 other sites

Certificate issuer

C = US, O = Let's Encrypt, CN = YR1

Valid until

Dec 6, 2026

Certificate

06c9854065b58ee5f1d63052f9ceed40f6881 other site

Names it covers

classpath.orgdigitalspeech.orgdonate.digitalspeech.orgdotgnu.orgemacs.orgglibc.gnu.orggnewsense.orggnu.orggnukids.orggplfaq.orghurd.gnu.orgipv6.nongnu.orgplayfreedom.orgplayogg.complayogg.orgupgradefromwindows.comupgradefromwindows8.orgvcdimager.orgwildebeest.ipv6.gnu.orgwildebeest1p.gnu.orgwww.classpath.orgwww.digitalspeech.orgwww.emacs.orgwww.gnu.orgwww.gnukids.orgwww.hurd.gnu.orgwww.ipv6.gnu.orgwww.ipv6.nongnu.orgwww.nongnu.orgwww.playfreedom.orgwww.playogg.comwww.upgradefromwindows.comwww.upgradefromwindows8.orgwww6.gnu.org

Favicon

1627941210only this site

TXT records

v=spf1 ip4:209.51.188.0/24 ip6:2001:470:142::/48 ip4:18.4.89.21 ip4:15.204.209.91 ip6:2604:2dc0:101:200::1d07 -all

Ad sellers

Who its ads.txt and app-ads.txt let sell its ad space directly. Sites sharing a seller account usually share an owner.

No ads.txt or app-ads.txt with direct sellers.

Published files

What it publishes for machines. Every version is archived.

• ads.txtnone (HTTP 404)
• app-ads.txtnone (HTTP 404)
• Favicon1 version · checked Oct 17, 2026View
• robots.txt1 version · checked Oct 17, 2026View
• security.txtnone (HTTP 404)
• Sitemap1 version · checked Oct 17, 2026View

History

What the archive holds about it.

Fetched 1 time since Oct 17, 2026, 1 successfully. The archive holds 1 distinct version of 1 page: every change is kept.

Linked from 15 indexed sites

The most popular first.

• adblockplus.org
• adminer.org
• freetype.org
• fsf.org
• gimp.org
• gnupg.org
• gzip.org
• lwn.net
• nongnu.org
• notepad-plus-plus.org
• redmine.org
• samba.org
• sourceware.org
• wireshark.org
• wordpressfoundation.org

Links to

Other sites its pages link to, by how many of its pages do.

• creativecommons.org1 page
• fsf.org1 page
• fsf.org.in1 page
• fsfe.org1 page
• fsfla.org1 page
• h-node.org1 page
• libreplanet.org1 page
• torproject.org1 page
• ushistory.org1 page