j3s.cz - robtex.com

j3s.cz

DNSSEC🔒 Signed (DS record present)
A91.107.197.208🇩🇪 Hetzner91.107.128.0/17 HETZNER-DC
PTRstatic.208.197.107.91.clients.your-server.de
NSns1.webglobe.cz ⭐
A2a00:1e40:a:53::5🇸🇰 IGNUM-AS2a00:1e40:a::/48
PTRns1-bra.core.webglobe.com
A185.65.223.35🇸🇰 IGNUM-AS185.65.223.0/24
PTRns1-bra.core.webglobe.com
NSns2.webglobe.cz
A2001:1ab0:7e1e:2::5🇨🇿 IGNUM-AS2001:1ab0::/32 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/
PTRns2-prg.core.webglobe.com
A217.31.48.201🇨🇿 IGNUM-AS217.31.48.0/20 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/
PTRns2-prg.core.webglobe.com
NSns3.webglobe.com
A2a03:b0c0:1:d0::1090:2001🇬🇧 DIGITALOCEAN2a03:b0c0:1::/48 DigitalOcean
PTRns3-lon.core.webglobe.com
A178.62.60.201🇬🇧 DIGITALOCEAN178.62.0.0/18 DigitalOcean
PTRns3-lon.core.webglobe.com
MXemail.webglobe.cz ⭐
A2001:1ab0:7e1f:1::1:5🇨🇿 IGNUM-AS2001:1ab0::/32 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/
PTRemail.webglobe.cz
A130.193.14.154🇨🇿 IGNUM-AS130.193.8.0/21 Webglobe s.r.o. H90
PTRemail.webglobe.cz
MXemail2.webglobe.cz ⭐
A130.193.14.154🇨🇿 IGNUM-AS130.193.8.0/21 Webglobe s.r.o. H90
PTRemail.webglobe.cz
MXemail3.webglobe.cz ⭐
A2001:880:0:15::2b1🇩🇪 ONE-NETWORK2001:880::/32
PTRemail3.webglobe.cz
A185.102.21.80🇨🇿 ONE-NETWORK185.102.21.0/24
PTRemail3.webglobe.cz
MXemail4.webglobe.cz ⭐
A185.102.21.80🇨🇿 ONE-NETWORK185.102.21.0/24
PTRemail3.webglobe.cz
TXTv=spf2.0/mfrom,pra +a +mx include:_spf2.webglobe.cz -all
TXTv=spf1 a mx include:_spf.webglobe.cz -all
SOAns1.webglobe.czroot@webglobe.cz 2026-07-27 #1

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=1785799042

Subdomains

mail.j3s.cz

Same first word

j3s.fr
j3s.eu
j3s.hu
j3s.sh
j3s.us
j3s.biz
j3s.nl
j3s.net
j3s.info
j3s.com
j3s.be
j3s.cz
j3s.ch
j3s.de

Similar names

sj3.pl
3js.ai
3js.casino
js3.pw
js3.ru
js3.com
3js.com.cn
3js.co
3js.fr
3sj.com.cn
sj3.de
3sj.net
sj3.at
s3j.ru
js3.nl
3js.org
3js.me
js3.me
sj3.com.br
js3.net
3js.net
3sj.com
3sj.cc
s3j.com
sj3.net
s3j.de
3js.name
3js.com
3js.top
3sj.nl
sj3.ru
3js.de
js3.jp
sj3.com
3js.co.za
3js.be
sj3.org
js3.at
js3.us
3js.nl
3js.cn
js3.org

DNS History

19 records (8 active, 11 former)

20162017201820192020202120222023202420252026NSns1.webglobe.czns2.webglobe.czns3.webglobe.comns.gransy.comns2.gransy.comns3.gransy.comns4.gransy.comns5.gransy.comMXemail.webglobe.czemail2.webglobe.czemail3.webglobe.czemail4.webglobe.czmail.j3s.czmail.svethostingu.czmx.internetserver.czA91.107.197.208185.28.193.3577.93.192.20083.167.244.201
○NSns.gransy.com2015-07-04 → 2020-12-18 · 4 obs
● 2015-07-04 15:44:46
● 2020-12-18 03:01:42
○ 2026-06-25 21:08:08
○ 2026-08-03 23:31:02
●NSns1.webglobe.cz2026-06-25 → 2026-08-03 · 3 obs
○ 2020-12-18 03:01:42
● 2026-06-25 21:08:08
● 2026-08-03 23:31:02
○NSns2.gransy.com2015-07-04 → 2020-12-18 · 4 obs
● 2015-07-04 15:44:46
● 2020-12-18 03:01:42
○ 2026-06-25 21:08:08
○ 2026-08-03 23:31:02
●NSns2.webglobe.cz2026-06-25 → 2026-08-03 · 3 obs
○ 2020-12-18 03:01:42
● 2026-06-25 21:08:08
● 2026-08-03 23:31:02
○NSns3.gransy.com2015-07-04 → 2020-12-18 · 4 obs
● 2015-07-04 15:44:46
● 2020-12-18 03:01:42
○ 2026-06-25 21:08:08
○ 2026-08-03 23:31:02
●NSns3.webglobe.com2026-06-25 → 2026-08-03 · 3 obs
○ 2020-12-18 03:01:42
● 2026-06-25 21:08:08
● 2026-08-03 23:31:02
○NSns4.gransy.com2015-07-04 → 2020-12-18 · 4 obs
● 2015-07-04 15:44:46
● 2020-12-18 03:01:42
○ 2026-06-25 21:08:08
○ 2026-08-03 23:31:02
○NSns5.gransy.com2015-07-04 → 2020-12-18 · 4 obs
● 2015-07-04 15:44:46
● 2020-12-18 03:01:42
○ 2026-06-25 21:08:08
○ 2026-08-03 23:31:02
●MXemail.webglobe.cz2026-06-25 → 2026-08-03 · 3 obs
○ 2020-12-18 03:01:42
● 2026-06-25 21:08:08
● 2026-08-03 23:31:02
●MXemail2.webglobe.cz2026-06-25 → 2026-08-03 · 3 obs
○ 2020-12-18 03:01:42
● 2026-06-25 21:08:08
● 2026-08-03 23:31:02
●MXemail3.webglobe.cz2026-06-25 → 2026-08-03 · 3 obs
○ 2020-12-18 03:01:42
● 2026-06-25 21:08:08
● 2026-08-03 23:31:02
●MXemail4.webglobe.cz2026-06-25 → 2026-08-03 · 3 obs
○ 2020-12-18 03:01:42
● 2026-06-25 21:08:08
● 2026-08-03 23:31:02
○MXmail.j3s.cz2015-07-04 → 2016-08-30 · 4 obs
● 2015-07-04 15:44:46
● 2016-08-30 16:54:24
○ 2017-04-08 18:41:32
○ 2026-08-03 23:31:02
○MXmail.svethostingu.cz2020-04-05 → 2020-12-18 · 5 obs
○ 2017-04-08 18:41:32
● 2020-04-05 02:53:28
● 2020-12-18 03:01:42
○ 2026-06-25 21:08:08
○ 2026-08-03 23:31:02
○MXmx.internetserver.cz2017-04-08 → 2017-04-08 · 4 obs
○ 2016-08-30 16:54:24
● 2017-04-08 18:41:32
○ 2020-04-05 02:53:28
○ 2026-08-03 23:31:02
○A185.28.193.352017-04-08 → 2017-04-08 · 4 obs
○ 2016-08-30 16:54:24
● 2017-04-08 18:41:32
○ 2020-04-05 02:53:28
○ 2026-08-03 23:31:02
○A77.93.192.2002015-07-04 → 2016-08-30 · 4 obs
● 2015-07-04 15:44:46
● 2016-08-30 16:54:24
○ 2017-04-08 18:41:32
○ 2026-08-03 23:31:02
○A83.167.244.2012020-04-05 → 2020-12-18 · 5 obs
○ 2017-04-08 18:41:32
● 2020-04-05 02:53:28
● 2020-12-18 03:01:42
○ 2026-06-25 21:08:08
○ 2026-08-03 23:31:02
●A91.107.197.2082026-06-25 → 2026-08-03 · 3 obs
○ 2020-12-18 03:01:42
● 2026-06-25 21:08:08
● 2026-08-03 23:31:02

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cza.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz-
j3s.czns1.webglobe.cz, ns2.webglobe.cz, ns3.webglobe.com4 records

✅ Authoritative Response

Server:185.65.223.35

NS records: ns1.webglobe.cz, ns2.webglobe.cz, ns3.webglobe.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1177ms | Queries: -

📄 Records

TypeCountSample Data
A191.107.197.208
NS3ns1.webglobe.cz, ns2.webglobe.cz...
MX4email4.webglobe.cz (pri: 10), email3.webglobe.cz (pri: 10)...
TXT2v=spf1 a mx include:_spf.webglobe.cz -al, v=spf2.0/mfrom,pra +a +mx include:_spf2.
SOA1ns1.webglobe.cz root.webglobe.cz

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.webglobe.cz, ns1.webglobe.cz, ns2.webglobe.cz...)

Analysis

Hierarchy

mail.j3s.cz is delegated beneath j3s.cz.

IP Addresses

j3s.cz resolves to one IP address: 91.107.197.208.

Further host names like static.208.197.107.91.clients.your-server.de and hazpro.cz overlap in IP numbers with j3s.cz.

Name Servers

The authoritative name servers for j3s.cz are ns3.webglobe.com, ns1.webglobe.cz and ns2.webglobe.cz — three in total.

There is at least partial name server overlap between j3s.cz and other domains — janrybarik.cz, rydwan.cz, ph-mbacgroup.com and two more among them.

These name servers regularly appear alongside ns2.skok.cz, ns.skok.cz, ns3.skokcz.eu and 5 other name servers in NS record sets.

ns3.webglobe.com, ns1.webglobe.cz and ns2.webglobe.cz all resolve to exactly two IP numbers apiece: ns3.webglobe.com → 178.62.60.201 and 2a03:b0c0:1:d0::1090:2001; ns1.webglobe.cz → 185.65.223.35 and 2a00:1e40:a:53::5; ns2.webglobe.cz → 217.31.48.201 and 2001:1ab0:7e1e:2::5.

Mail Servers

Mail for j3s.cz is handled by four mail servers: email2.webglobe.cz, email3.webglobe.cz, email4.webglobe.cz and email.webglobe.cz.

j3s.cz has at least partial mail server overlap with other domains such as 3p.cz, nebesky.com, webkafe.cz and two more.

Hostnames that resolve to two IP addresses:

email3.webglobe.cz directs traffic to 185.102.21.80 and 2001:880:0:15::2b1.

email.webglobe.cz directs traffic to 130.193.14.154 and 2001:1ab0:7e1f:1::1:5.

Hosts with just one IP address:

email2.webglobe.cz has the IP address 130.193.14.154.

email4.webglobe.cz has the IP address 185.102.21.80.

Both email3.webglobe.cz and email4.webglobe.cz resolve to 185.102.21.80 IP addresses each.

Both email.webglobe.cz and email2.webglobe.cz resolve to 130.193.14.154 IP addresses each.