gnu-linux.cz - robtex.com

gnu-linux.cz

DNSSEC🔒 Signed (DS record present)
A2a01:430:2e::199🇨🇿 MASTER-AS2a01:430::/32 MASTER-IPV6-1-MAI-CZ
PTR2a01-0430-002e-199.master6.frantovo.cz
A149.62.147.199🇨🇿 MASTER-AS149.62.144.0/21 CZ-MASTER-20110725
NSns2.gransy.com ⭐
A2001:19f0:6801:474:5400:1ff:fec5:8efb🇫🇷 AS-VULTR2001:19f0:6800::/38 Vultr Assigned Prefix
A2001:19f0:7401:81e0:5400:1ff:fec5:8ef6🇬🇧 AS-VULTR2001:19f0:7400::/38 Vultr Assigned Prefix
A95.179.192.121🇬🇧 AS-VULTR95.179.192.0/20 Vultr Assigned Prefix
PTR95.179.192.121.vultrusercontent.com
A217.16.185.221🇨🇿 VSHOSTING217.16.176.0/20 III.
PTRns2.gransy.com
A217.69.4.49🇫🇷 AS-VULTR217.69.0.0/20 Vultr Assigned Prefix
PTR217.69.4.49.vultrusercontent.com
NSns.gransy.com
A2001:19f0:5001:1caf:5400:1ff:fec5:8d50🇳🇱 AS-VULTR2001:19f0:5000::/38 Vultr Assigned Prefix
A45.76.90.43🇩🇪 AS-VULTR45.76.80.0/20 Vultr Assigned Prefix
PTR45.76.90.43.vultrusercontent.com
A77.78.104.149🇨🇿 CASABLANCA-AS77.78.96.0/20 Casablanca INT
PTRns.gransy.com
A95.179.136.180🇳🇱 AS-VULTR95.179.128.0/20 Vultr Assigned Prefix
PTR95.179.136.180.vultrusercontent.com
NSns3.gransy.com
A2a02:750:7::2e7🇸🇪 GLESYS2a02:750::/29
PTR2a02-750-7--2e7-static.glesys.net
A2a02:750:8::32🇳🇱 GLESYS2a02:750:8::/48 GleSYS AB
PTR2a02-750-8--32-static.glesys.net
A46.21.100.103🇳🇱 GLESYS46.21.100.0/24 GleSYS AB
PTR46-21-100-103-static.glesys.net
A77.78.126.35🇨🇿 CASABLANCA-AS77.78.124.0/22 Casablanca INT
A109.74.7.71🇸🇪 GLESYS109.74.0.0/20
PTR109-74-7-71-static.glesys.net
NSns4.gransy.com
A2001:19f0:5401:69b:5400:1ff:fec5:8f3f🇺🇸 AS-VULTR2001:19f0:5400::/38 Vultr Assigned Prefix
A2a00:1a28:2010:1::89🇳🇴 GLESYS2a00:1a28::/32 Portlane Network
PTR2a00-1a28-2010-1--89-static.glesys.net
A66.42.94.136🇺🇸 AS-VULTR66.42.80.0/20 Vultr Assigned Prefix
PTR66.42.94.136.vultrusercontent.com
A80.67.7.209🇳🇴 GLESYS80.67.0.0/20 Portlane Network
PTR80-67-7-209-static.glesys.net
NSns5.gransy.com
A2a02:750:5::538🇸🇪 GLESYS2a02:750::/29
PTR2a02-750-5--538-static.glesys.net
A31.192.227.223🇸🇪 GLESYS31.192.224.0/21
PTR31-192-227-223-static.glesys.net
SOAns.gransy.comroot@gransy.com serial=2753248309

cz

DNSSEC🔒 Signed (DS record present)
NSa.ns.nic.cz ⭐
NSb.ns.nic.cz
NSc.ns.nic.cz
NSd.ns.nic.cz
SOAa.ns.nic.czhostmaster@nic.cz serial=1774650101

Same first word

gnu-linux.org
gnu-linux.ro
gnu-linux.pl
gnu-linux.com
gnu-linux.cz

DNS History

20 records (7 active, 13 former)

20162017201820192020202120222023202420252026NSns.gransy.comns2.gransy.comns3.gransy.comns4.gransy.comns5.gransy.comns.wedos.comns.wedos.czns.wedos.euns.wedos.netMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comaspmx4.googlemail.comaspmx5.googlemail.comA149.62.147.1992a01:430:2e::1992a02:2b88:2:1::3528:131.31.75.227
●NSns.gransy.com2026-03-09 → 2026-03-27 · 3 obs
○ 2016-12-06 23:42:36
● 2026-03-09 02:01:28
● 2026-03-27 22:52:14
○NSns.wedos.com2015-07-07 → 2016-12-06 · 4 obs
● 2015-07-07 11:11:10
● 2016-12-06 23:42:36
○ 2026-03-09 02:01:28
○ 2026-03-27 22:52:14
○NSns.wedos.cz2015-07-07 → 2016-12-06 · 4 obs
● 2015-07-07 11:11:10
● 2016-12-06 23:42:36
○ 2026-03-09 02:01:28
○ 2026-03-27 22:52:14
○NSns.wedos.eu2015-07-07 → 2016-12-06 · 4 obs
● 2015-07-07 11:11:10
● 2016-12-06 23:42:36
○ 2026-03-09 02:01:28
○ 2026-03-27 22:52:14
○NSns.wedos.net2015-07-07 → 2016-12-06 · 4 obs
● 2015-07-07 11:11:10
● 2016-12-06 23:42:36
○ 2026-03-09 02:01:28
○ 2026-03-27 22:52:14
●NSns2.gransy.com2026-03-09 → 2026-03-27 · 3 obs
○ 2016-12-06 23:42:36
● 2026-03-09 02:01:28
● 2026-03-27 22:52:14
●NSns3.gransy.com2026-03-09 → 2026-03-27 · 3 obs
○ 2016-12-06 23:42:36
● 2026-03-09 02:01:28
● 2026-03-27 22:52:14
●NSns4.gransy.com2026-03-09 → 2026-03-27 · 3 obs
○ 2016-12-06 23:42:36
● 2026-03-09 02:01:28
● 2026-03-27 22:52:14
●NSns5.gransy.com2026-03-09 → 2026-03-27 · 3 obs
○ 2016-12-06 23:42:36
● 2026-03-09 02:01:28
● 2026-03-27 22:52:14
○MXalt1.aspmx.l.google.com2015-07-07 → 2016-12-06 · 4 obs
● 2015-07-07 11:11:10
● 2016-12-06 23:42:36
○ 2026-03-09 02:01:28
○ 2026-03-27 22:52:14
○MXalt2.aspmx.l.google.com2015-07-07 → 2016-12-06 · 4 obs
● 2015-07-07 11:11:10
● 2016-12-06 23:42:36
○ 2026-03-09 02:01:28
○ 2026-03-27 22:52:14
○MXaspmx.l.google.com2015-07-07 → 2016-12-06 · 4 obs
● 2015-07-07 11:11:10
● 2016-12-06 23:42:36
○ 2026-03-09 02:01:28
○ 2026-03-27 22:52:14
○MXaspmx2.googlemail.com2015-07-07 → 2016-12-06 · 4 obs
● 2015-07-07 11:11:10
● 2016-12-06 23:42:36
○ 2026-03-09 02:01:28
○ 2026-03-27 22:52:14
○MXaspmx3.googlemail.com2015-07-07 → 2016-12-06 · 4 obs
● 2015-07-07 11:11:10
● 2016-12-06 23:42:36
○ 2026-03-09 02:01:28
○ 2026-03-27 22:52:14
○MXaspmx4.googlemail.com2015-07-07 → 2016-12-06 · 4 obs
● 2015-07-07 11:11:10
● 2016-12-06 23:42:36
○ 2026-03-09 02:01:28
○ 2026-03-27 22:52:14
○MXaspmx5.googlemail.com2015-07-07 → 2016-12-06 · 4 obs
● 2015-07-07 11:11:10
● 2016-12-06 23:42:36
○ 2026-03-09 02:01:28
○ 2026-03-27 22:52:14
●A149.62.147.1992026-03-09 → 2026-03-27 · 3 obs
○ 2016-12-06 23:42:36
● 2026-03-09 02:01:28
● 2026-03-27 22:52:14
●A2a01:430:2e::1992026-03-09 → 2026-03-27 · 3 obs
○ 2016-12-06 23:42:36
● 2026-03-09 02:01:28
● 2026-03-27 22:52:14
○A2a02:2b88:2:1::3528:12015-07-07 → 2016-12-06 · 4 obs
● 2015-07-07 11:11:10
● 2016-12-06 23:42:36
○ 2026-03-09 02:01:28
○ 2026-03-27 22:52:14
○A31.31.75.2272015-07-07 → 2016-12-06 · 4 obs
● 2015-07-07 11:11:10
● 2016-12-06 23:42:36
○ 2026-03-09 02:01:28
○ 2026-03-27 22:52:14

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cza.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz-
gnu-linux.czns.gransy.com, ns2.gransy.com, ns3.gransy.com, ns4.gransy.com...-

✅ Authoritative Response

Server:217.69.4.49

NS records: ns.gransy.com, ns2.gransy.com, ns3.gransy.com, ns4.gransy.com, ns5.gransy.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 2701ms | Queries: -

📄 Records

TypeCountSample Data
A1149.62.147.199
AAAA12a01:430:2e::199
NS5ns5.gransy.com, ns4.gransy.com...
SOA1ns.gransy.com root.gransy.com

Analysis

IP Addresses

gnu-linux.cz points to two IP numbers: 2a01:430:2e::199 and 149.62.147.199.

Other host names, for instance gnulinux.cz, frantovo.cz, samizdat.ns.frantovo.cz and samizdat-2.frantovo.cz share IP numbers with gnu-linux.cz.

Name Servers

gnu-linux.cz is delegated to five name servers: ns2.gransy.com, ns3.gransy.com, ns4.gransy.com, ns5.gransy.com and ns.gransy.com.

gnu-linux.cz at least partially shares name servers with other domains, for instance info-prerov.cz, openware.pl, fivo.cz, prekladac.cz and theraband.cz.

Host names with five IP numbers:

ns2.gransy.com points to: 2001:19f0:6801:474:5400:1ff:fec5:8efb, 2001:19f0:7401:81e0:5400:1ff:fec5:8ef6, 95.179.192.121, 217.16.185.221 and 217.69.4.49.

ns3.gransy.com points to: 2a02:750:7::2e7, 2a02:750:8::32, 46.21.100.103, 77.78.126.35 and 109.74.7.71.

Host names with four IP numbers:

ns4.gransy.com points to: 2001:19f0:5401:69b:5400:1ff:fec5:8f3f, 2a00:1a28:2010:1::89, 66.42.94.136 and 80.67.7.209.

ns.gransy.com points to: 2001:19f0:5001:1caf:5400:1ff:fec5:8d50, 45.76.90.43, 77.78.104.149 and 95.179.136.180.

Host names with two IP numbers:

ns5.gransy.com points to: 2a02:750:5::538 and 31.192.227.223.