jbcm.info - robtex.com

jbcm.info

DNSSEC⚠️ Not signed
A2001:1568::14🇨🇿 WEB4U2001:1568::/33
PTRphp7.web4u.cz
A81.91.86.14🇨🇿 WEB4U81.91.80.0/21
NSns2.web4u.cz ⭐
A2a02:a40:100:28ff::12🇨🇿 BlueTone-AS2a02:a40::/32 Ceske Radiokomunikace, a.s.
PTRns2.web4u.cz
A85.207.53.12🇨🇿 BlueTone-AS85.207.0.0/16 BlueTone-CRa-CZ Fourth address block
PTRns2.web4u.cz
NSns.web4u.cz
A2001:1568:fd::241🇨🇿 WEB4U2001:1568::/33
PTRns.web4u.cz
A185.14.224.241🇨🇿 WEB4U185.14.224.0/23
PTRns.web4u.cz
MXmx.web4u.cz ⭐
A2001:1568::7012🇨🇿 WEB4U2001:1568::/33
PTRmx.web4u.cz
A81.91.87.12🇨🇿 WEB4U81.91.80.0/21
PTRmx.web4u.cz
SOAns.web4u.czadmin@web4u.cz 2019-10-03 #1

info

DNSSEC🔒 Signed (DS record present)
NSa0.info.afilias-nst.info ⭐
NSa2.info.afilias-nst.info
NSb0.info.afilias-nst.org ⚠️ Not in parent delegation
NSb2.info.afilias-nst.org ⚠️ Not in parent delegation
NSc0.info.afilias-nst.info
NSd0.info.afilias-nst.org ⚠️ Not in parent delegation
SOAa0.info.afilias-nst.infohostmaster@donuts.email serial=1782271743

Same first word

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jbcm.nl
jbcm.info
jbcm.com
jbcm.org
jbcm.de
jbcm.cn
jbcm.ru
jbcm.co.uk

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jcbm.df.gov.br
bmjc.de
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mjcb.cn
cjbm.org
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jcbm.org
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mjcb.org
bcmj.net
bjmc.org

DNS History

12 records (5 active, 7 former)

20162017201820192020202120222023202420252026NSns.web4u.czns2.web4u.czns.rackspace.comns1.hosting.comns2.hosting.comns2.rackspace.comns3.hosting.comMXmx.web4u.czA2001:1568::1481.91.86.14208.112.94.17850.57.19.120
○NSns.rackspace.com2015-06-24 → 2015-11-12 · 4 obs
● 2015-06-24 18:10:02
● 2015-11-12 05:02:30
○ 2016-01-28 07:49:14
○ 2026-06-24 04:08:28
●NSns.web4u.cz2026-03-26 → 2026-06-24 · 3 obs
○ 2017-04-20 06:27:36
● 2026-03-26 13:05:14
● 2026-06-24 04:08:28
○NSns1.hosting.com2016-01-28 → 2017-04-20 · 5 obs
○ 2015-11-12 05:02:30
● 2016-01-28 07:49:14
● 2017-04-20 06:27:36
○ 2026-03-26 13:05:14
○ 2026-06-24 04:08:28
○NSns2.hosting.com2016-01-28 → 2017-04-20 · 5 obs
○ 2015-11-12 05:02:30
● 2016-01-28 07:49:14
● 2017-04-20 06:27:36
○ 2026-03-26 13:05:14
○ 2026-06-24 04:08:28
○NSns2.rackspace.com2015-06-24 → 2015-11-12 · 4 obs
● 2015-06-24 18:10:02
● 2015-11-12 05:02:30
○ 2016-01-28 07:49:14
○ 2026-06-24 04:08:28
●NSns2.web4u.cz2026-03-26 → 2026-06-24 · 3 obs
○ 2017-04-20 06:27:36
● 2026-03-26 13:05:14
● 2026-06-24 04:08:28
○NSns3.hosting.com2016-01-28 → 2017-04-20 · 5 obs
○ 2015-11-12 05:02:30
● 2016-01-28 07:49:14
● 2017-04-20 06:27:36
○ 2026-03-26 13:05:14
○ 2026-06-24 04:08:28
●MXmx.web4u.cz2026-03-26 → 2026-06-24 · 2 obs
● 2026-03-26 13:05:14
● 2026-06-24 04:08:28
●A2001:1568::142026-03-26 → 2026-06-24 · 3 obs
○ 2017-04-20 06:27:36
● 2026-03-26 13:05:14
● 2026-06-24 04:08:28
○A208.112.94.1782016-01-28 → 2017-04-20 · 5 obs
○ 2015-11-12 05:02:30
● 2016-01-28 07:49:14
● 2017-04-20 06:27:36
○ 2026-03-26 13:05:14
○ 2026-06-24 04:08:28
○A50.57.19.1202015-06-24 → 2015-11-12 · 4 obs
● 2015-06-24 18:10:02
● 2015-11-12 05:02:30
○ 2016-01-28 07:49:14
○ 2026-06-24 04:08:28
●A81.91.86.142026-03-26 → 2026-06-24 · 3 obs
○ 2017-04-20 06:27:36
● 2026-03-26 13:05:14
● 2026-06-24 04:08:28

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
infoa0.info.afilias-nst.info, a2.info.afilias-nst.info, c0.info.afilias-nst.info-
jbcm.infons2.web4u.cz, ns.web4u.cz-

✅ Authoritative Response

Server:185.14.224.241

NS records: ns2.web4u.cz, ns.web4u.cz

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for jbcm.info (unsigned zone)

⏱️ Timing

Total: 886ms | Queries: -

📄 Records

TypeCountSample Data
A181.91.86.14
AAAA12001:1568::14
NS2ns.web4u.cz, ns2.web4u.cz
MX1mx.web4u.cz (pri: 10)
SOA1ns.web4u.cz admin.web4u.cz

Analysis

IP Addresses

jbcm.info directs to two IP numbers, 81.91.86.14 and 2001:1568::14

Two other host names, along with aucetnictvi.cz, apartmanloucna.com and selfrejuvenating.com, also share IP numbers with jbcm.info.

Name Servers

jbcm.info is served by two delegated name servers, ns2.web4u.cz and ns.web4u.cz.

jbcm.info shares its NS records with other domains, for example lakron.eu, underweb.cz, kcme.eu and two others.

Each of the two host names carries two IP addresses: ns2.web4u.cz points to 85.207.53.12 and 2a02:a40:100:28ff::12, and ns.web4u.cz points to 185.14.224.241 and 2001:1568:fd::241.

Mail Servers

The sole mail server for jbcm.info is mx.web4u.cz.

Among the domains sharing a mail server setup with jbcm.info are modrava.info, smhl.cz, sagita.eu and two others.

There is at least a partial overlap in mail servers between jbcm.info and other domains like st-automation.cz, bef.cz and isosklo.cz.

The host mx.web4u.cz resolves to 81.91.87.12 and 2001:1568::7012 — two IP addresses.