linux.edu - dns.ninja

`linux.edu`

DNSSEC	⚠️ Not signed
A	2001:41d0:a:62c4::1^{🇫🇷 OVH2001:41d0::/32 IPv6}
		PTR	`crux.linux.edu`
A	51.75.119.52^{🇫🇷 OVH51.75.0.0/16}
NS	`master.linux.edu` ⭐
		A	2001:41d0:a:62c4::1^{🇫🇷 OVH2001:41d0::/32 IPv6}
			PTR	`crux.linux.edu`
		A	51.75.119.52^{🇫🇷 OVH51.75.0.0/16}
			PTR	`master.linux.edu`
NS	`charybdis.linux.edu`
		A	35.211.12.166^{🇺🇸 Google35.211.0.0/16}
			PTR	`166.12.211.35.bc.googleusercontent.com`
NS	`crux.linux.edu`
		A	172.205.254.133^{🇳🇱 Microsoft172.200.0.0/13}
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c21::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pe-in-f27.1e100.net`
		A	142.251.167.26^{🇺🇸 Google142.251.167.0/24}
			PTR	`ww-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽²⁰⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽²⁰⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`aspmx2.googlemail.com`⁽³⁰⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`aspmx3.googlemail.com`⁽³⁰⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`aspmx4.googlemail.com`⁽³⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
MX	`aspmx5.googlemail.com`⁽³⁰⁾
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`v=spf1 ip4:51.75.119.52 ip6:2001:41d0:a:62c4::1 include:_spf.google.com ~all`
TXT	`google-site-verification=haFgbqgqnSfKwzJYUaAftVgHtGbrWVrr9wkKdAfygTY`
SOA	`master.linux.EDU`eduard@linux.edu 2026-06-18 #6

`edu`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.edu-servers.net` ⭐
	NS	`b.edu-servers.net`
	NS	`c.edu-servers.net`
	NS	`d.edu-servers.net`
	NS	`e.edu-servers.net`
	NS	`f.edu-servers.net`
	NS	`g.edu-servers.net`
	NS	`h.edu-servers.net`
	NS	`i.edu-servers.net`
	NS	`j.edu-servers.net`
	NS	`k.edu-servers.net`
	NS	`l.edu-servers.net`
	NS	`m.edu-servers.net`
	SOA	`a.edu-servers.net`nstld@verisign-grs.com serial=1784417047

Subdomains

ns1.linux.edu

web.linux.edu

crux.linux.edu

charybdis.linux.edu

master.linux.edu

www.linux.edu

titan.linux.edu

Same first word

linux.net.pk

linux.do

linux.ne.kr

linux.com.vn

linux.gd

linux.uk.com

linux.bialystok.pl

linux.ninja

linux.cat

linux.ba

linux.hu

linux.net.ar

linux.com.pl

linux.al

linux.wiki

linux.org.ua

linux.szczecin.pl

linux.web.tr

linux.watch

linux.org.ba

linux.or.id

linux.tips

linux.pizza

linux.dev

linux.ie

linux.es

linux.email

linux.co.uk

linux.name.tr

linux.ovh

linux.slupsk.pl

linux.org.mx

linux.college

linux.my

linux.land

linux.krakow.pl

linux.lviv.ua

linux.mx

linux.gda.pl

linux.lublin.pl

linux.edu

linux.boutique

linux.or.jp

linux.ac

linux.lu

linux.nic.in

linux.net.ru

linux.center

linux.solutions

linux.net.cn

linux.co.id

linux.org.hk

linux.im

linux.bielsko.pl

linux.org.ve

linux.bz

linux.net.pl

linux.co.hu

linux.sg

linux.zone

linux.hr

linux.co.ke

linux.com.fr

linux.co.at

linux.rs

linux.net.tr

linux.in

linux.tel

linux.eu

linux.org.tr

linux.fail

linux.am

linux.run

linux.ca

linux.pictures

linux.directory

linux.org.ru

linux.org.py

linux.frl

linux.ch

linux.kg

linux.lat

linux.org.ph

linux.kr

linux.toys

linux.no

linux.org.mt

linux.engineering

linux.aq

linux.com.es

linux.monster

linux.report

linux.ec

linux.systems

linux.events

linux.repair

linux.or.kr

linux.casa

linux.co.kr

linux.careers

linux.biz

linux.ru

linux.cz

linux.kiev.ua

linux.lv

linux.community

linux.org.au

linux.st

linux.pf

linux.at

linux.org.na

linux.academy

linux.or.tz

linux.org.pe

linux.edu.lv

linux.ro

linux.technology

linux.sh.cn

linux.vc

linux.su

Similar names

linux.tc

linux.vn

linux.conf.au

lunix.com.ar

linux.gen.nz

lunix.org

linux.gr

linux.lol

linux.uk

linux.coffee

nuxli.ch

xunli.xyz

ulinx.io

luxin.nl

inlux.eu

luxin.eu

lunix.at

nilux.com.br

luxin.co

luxin.sk

inlux.cn

linxu.de

luxin.it

lunix.info

lixun.com

xunli.cn

lunix.hu

xulin.com

luxin.dnsalias.com

inlux.org

xinul.de

nilux.fr

nulix.ca

unlix.com

xulin.de

xunil.co.nz

inlux.sk

xunil.net

lunix.ch

nilux.net

inlux.ru

nuxli.net

lixun.sg

lunix.dk

xulin.df.gov.br

xunil.com

luxin.me

xinlu.com

nilux.no

luxin.net

xulin.info

nuxli.biz

lixun.tw

nuxli.com

xunil.at

nuxli.be

ulnix.com

DNS History

15 records (12 active, 3 former)

●NScharybdis.linux.edu2026-03-03 → 2026-07-18 · 3 obs

○ 2015-07-08 10:38:24
● 2026-03-03 01:13:32
● 2026-07-18 23:32:58

●NScrux.linux.edu2026-03-03 → 2026-07-18 · 3 obs

○ 2015-07-08 10:38:24
● 2026-03-03 01:13:32
● 2026-07-18 23:32:58

●NSmaster.linux.edu2015-07-08 → 2026-07-18 · 2 obs

● 2015-07-08 10:38:24
● 2026-07-18 23:32:58

○NSns1.signal1network.com2015-07-08 → 2026-06-17 · 47 obs

● 2015-07-08 10:38:24
● 2026-03-03 01:13:32
○ 2026-03-04 02:26:02
○ 2026-03-13 05:33:20
● 2026-03-13 19:49:28
● 2026-03-14 06:28:50
○ 2026-03-23 14:49:56
○ 2026-03-26 08:24:36
● 2026-03-27 16:41:54
● 2026-03-29 00:03:44
○ 2026-03-29 00:54:06
○ 2026-03-30 07:54:30
● 2026-03-30 19:03:56
● 2026-04-02 21:16:04
○ 2026-04-02 23:50:04
○ 2026-04-05 11:11:48
● 2026-04-05 22:49:50
○ 2026-04-06 23:25:56
○ 2026-04-07 00:33:04
● 2026-04-08 03:08:56
● 2026-04-11 22:43:46
○ 2026-04-13 14:04:50
○ 2026-04-16 01:23:44
● 2026-04-19 14:19:24
○ 2026-04-19 23:38:28
● 2026-04-22 02:07:02
● 2026-04-22 15:09:12
○ 2026-04-23 01:02:30
○ 2026-04-23 19:33:42
● 2026-04-25 23:35:48
○ 2026-04-26 08:03:54
○ 2026-05-04 22:16:16
● 2026-05-06 06:50:12
● 2026-05-06 15:00:20
○ 2026-05-06 15:39:54
○ 2026-05-19 04:11:44
● 2026-05-19 05:39:58
○ 2026-05-26 11:05:08
● 2026-05-27 08:13:52
○ 2026-05-27 09:10:46
● 2026-05-28 16:04:00
● 2026-05-31 02:51:18
○ 2026-06-09 10:39:24
○ 2026-06-14 13:25:00
● 2026-06-17 00:48:08
○ 2026-06-18 15:59:54
○ 2026-07-18 23:32:58

○NSns2.signal1network.com2015-07-08 → 2026-06-17 · 47 obs

●MXalt1.aspmx.l.google.com2015-07-08 → 2026-07-18 · 5 obs

● 2015-07-08 10:38:24
● 2017-02-14 01:07:24
○ 2026-06-20 14:25:00
● 2026-06-24 05:10:52
● 2026-07-18 23:32:58

●MXalt2.aspmx.l.google.com2015-07-08 → 2026-07-18 · 5 obs

● 2015-07-08 10:38:24
● 2017-02-14 01:07:24
○ 2026-06-20 14:25:00
● 2026-06-24 05:10:52
● 2026-07-18 23:32:58

●MXaspmx.l.google.com2015-07-08 → 2026-07-18 · 5 obs

● 2015-07-08 10:38:24
● 2017-02-14 01:07:24
○ 2026-06-20 14:25:00
● 2026-06-24 05:10:52
● 2026-07-18 23:32:58

●MXaspmx2.googlemail.com2015-07-08 → 2026-07-18 · 5 obs

● 2015-07-08 10:38:24
● 2017-02-14 01:07:24
○ 2026-06-20 14:25:00
● 2026-06-24 05:10:52
● 2026-07-18 23:32:58

●MXaspmx3.googlemail.com2015-07-08 → 2026-07-18 · 5 obs

● 2015-07-08 10:38:24
● 2017-02-14 01:07:24
○ 2026-06-20 14:25:00
● 2026-06-24 05:10:52
● 2026-07-18 23:32:58

●MXaspmx4.googlemail.com2015-07-08 → 2026-07-18 · 5 obs

● 2015-07-08 10:38:24
● 2017-02-14 01:07:24
○ 2026-06-20 14:25:00
● 2026-06-24 05:10:52
● 2026-07-18 23:32:58

●MXaspmx5.googlemail.com2015-07-08 → 2026-07-18 · 5 obs

● 2015-07-08 10:38:24
● 2017-02-14 01:07:24
○ 2026-06-20 14:25:00
● 2026-06-24 05:10:52
● 2026-07-18 23:32:58

●A2001:41d0:a:62c4::12015-07-08 → 2026-07-18 · 5 obs

● 2015-07-08 10:38:24
● 2017-02-14 01:07:24
○ 2026-06-20 14:25:00
● 2026-06-24 05:10:52
● 2026-07-18 23:32:58

○A37.187.109.1962015-07-08 → 2026-06-17 · 4 obs

● 2015-07-08 10:38:24
● 2026-06-17 00:48:08
○ 2026-06-18 15:59:54
○ 2026-07-18 23:32:58

●A51.75.119.522026-06-18 → 2026-07-18 · 5 obs

○ 2026-06-17 00:48:08
● 2026-06-18 15:59:54
○ 2026-06-20 14:25:00
● 2026-06-24 05:10:52
● 2026-07-18 23:32:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
edu	a.edu-servers.net, b.edu-servers.net, c.edu-servers.net, d.edu-servers.net...	26 records
linux.edu	master.linux.edu, charybdis.linux.edu, crux.linux.edu	4 records

✅ Authoritative Response

Server:51.75.119.52

NS records: master.linux.edu, charybdis.linux.edu, crux.linux.edu

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for linux.edu (unsigned zone)

⏱️ Timing

Total: 2412ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`51.75.119.52`
AAAA	1	`2001:41d0:a:62c4::1`
NS	3	`master.linux.EDU, charybdis.linux.EDU...`
MX	7	`ALT2.ASPMX.L.GOOGLE.COM (pri: 20), ASPMX3.GOOGLEMAIL.COM (pri: 30)...`
TXT	2	`v=spf1 ip4:51.75.119.52 ip6:2001:41d0:a:, google-site-verification=haFgbqgqnSfKwzJ`
SOA	1	`master.linux.EDU eduard.linux.edu`

📌 Glue Records Collected

Total: 30

In-bailiwick: 4 (master.linux.edu, master.linux.edu, charybdis.linux.edu...)

Out-of-bailiwick: 26 (a.edu-servers.net, b.edu-servers.net, c.edu-servers.net...)

Analysis

Hierarchy

The host names ns1.linux.edu, web.linux.edu, crux.linux.edu, charybdis.linux.edu and master.linux.edu — among a few others — fall under the parent domain linux.edu.

IP Addresses

linux.edu points to the IP addresses 51.75.119.52 and 2001:41d0:a:62c4::1

edzoe.net, ns.ownme.org, master.linux.edu and two other host names share IP numbers with linux.edu.

Name Servers

linux.edu carries NS records delegating to charybdis.linux.edu, crux.linux.edu and master.linux.edu.

Hostnames that resolve to two IP addresses:

master.linux.edu resolves to two addresses: 51.75.119.52 and 2001:41d0:a:62c4::1.

Hosts with just one IP address:

The hostname charybdis.linux.edu resolves to 35.211.12.166.

The hostname crux.linux.edu resolves to 172.205.254.133.

Mail Servers

linux.edu uses 7 mail servers for delivery: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and 4 other.

linux.edu has at least partial mail server overlap with other domains such as ns500693.ns500693.ns500699.ns500699.ns500693.ns500734.ns500693.ns500693.ns500693.ns500693.ns500699.ns500693.ns500588.ns500632.ns500612.ns500612.ns500110.dtrkdll.com, ns500742.ns500754.ns500742.ns500754.ns500754.ns500731.ns500704.ns500131.lustychickser.com, ns500754.ns500671.ns500742.ns500731.ns500671.ns500704.ns500688.ns500705.ns500688.ns500649.ns500291.ns500131.lustychickser.com and two more.

These mail servers commonly co-occur with mail servers aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and 3 others.

Hostnames that resolve to two IP addresses:

aspmx2.googlemail.com resolves to two addresses: 108.177.123.27 and 2800:3f0:4003:c0f::1b.

aspmx3.googlemail.com resolves to two addresses: 172.253.116.26 and 2a00:1450:400b:c02::1b.

aspmx4.googlemail.com resolves to two addresses: 192.178.223.26 and 2a00:1450:4009:c0f::1b.

aspmx5.googlemail.com resolves to two addresses: 172.253.157.27 and 2a00:1450:400c:c23::1b.

aspmx.l.google.com resolves to two addresses: 142.251.167.26 and 2607:f8b0:4004:c21::1b.

alt1.aspmx.l.google.com resolves to two addresses: 108.177.123.27 and 2800:3f0:4003:c0f::1b.

alt2.aspmx.l.google.com resolves to two addresses: 172.253.116.27 and 2a00:1450:400b:c02::1b.

aspmx2.googlemail.com along with alt1.aspmx.l.google.com each resolve to 2800:3f0:4003:c0f::1b IP addresses.

aspmx2.googlemail.com along with alt1.aspmx.l.google.com each resolve to 108.177.123.27 IP addresses.

aspmx3.googlemail.com along with alt2.aspmx.l.google.com each resolve to 2a00:1450:400b:c02::1b IP addresses.