isp.systemx.cz - robtex.com

isp.systemx.cz

DNSSEC⚠️ Not signed
A185.134.160.134🇨🇿 EDERA_Group185.134.160.0/22
PTRisp.systemx.cz
TXTv=spf1 ip4:185.134.160.134 ip4:185.134.160.154 ip4:185.134.160.158 ~all

systemx.cz

DNSSEC🔒 Signed (DS record present)
A185.134.160.134🇨🇿 EDERA_Group185.134.160.0/22
NSns2.web4u.cz ⭐
NSns.web4u.cz
MXisp.systemx.cz ⭐
TXTgoogle-site-verification=Iw2m78kX7gPw1a199d8A5MNTst8yw2iFA1nCYmYyEoI
TXTgoogle-site-verification=_0G8ssIwL0M-uhrOl5ofau2GaY43—AnMSOcBwAFdMQ
TXTv=spf1 ip4:185.134.160.134 include:isp.systemx.cz include:_spf.google.com inc...
SOAns.web4u.czadmin@web4u.cz 2025-06-10 #4

PTR for

134.160.134.185.in-addr.arpa

MX for

systemx.cz

Previously MX for

isp.systemx.cz

Same first word

isp.bg
isp.nu
isp.qa
isp.kiev.ua
isp.lt
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isp.systems
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isp.solutions
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Similar names

pis.com.hr
spi.cy
sip.solutions
psi.ch
ips.academy
sip.chat
pis.eu.com
sip.net.au
pis.at
ips.org.br
pis.ovh
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sip.si
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spi.uz
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ips.is
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psi.se
ips.com
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spi.at
psi.com.pl
sip.hotmail
psi.waw.pl
ips.bg
spi.co.th
ips.co.zw
sip.ca
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ips.fi
spi.ir
ips.gmbh
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ips.or.at
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pis.org.pl
pis.org
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psi.gg
sip.org.tr
ips.pt
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ips.ag
spi.ch
sip.tg
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ips.net
psi.org.es
ips.eu
spi.com.br
sip.tj
spi.quest
psi.uz
ips.me
ips.nl
sip.ru.com
ips.si
ips.ge
sip.domains
spi.bg

DNS History

2 records (1 active, 1 former)

20192020202120222023202420252026MXisp.systemx.czA185.134.160.134
○MXisp.systemx.cz2018-05-17 → 2018-05-17 · 3 obs
● 2018-05-17 19:17:56
○ 2026-03-24 23:16:06
○ 2026-04-13 13:09:48
●A185.134.160.1342018-05-17 → 2026-04-13 · 2 obs
● 2018-05-17 19:17:56
● 2026-04-13 13:09:48

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
czc.ns.nic.cz, b.ns.nic.cz, a.ns.nic.cz, d.ns.nic.cz-
systemx.czns.web4u.cz, ns2.web4u.cz4 records

✅ Authoritative Response

Server:85.207.53.12

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

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 609ms | Queries: -

📄 Records

TypeCountSample Data
A1185.134.160.134
TXT1v=spf1 ip4:185.134.160.134 ip4:185.134.1

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns.web4u.cz, ns2.web4u.cz, ns.web4u.cz...)

Analysis

Mail Server Role

The mail server for systemx.cz is isp.systemx.cz.

IP Addresses

isp.systemx.cz points to a single IP number: 185.134.160.134.

Other host names, for instance nadace-hgf.cz, usz.cz, logicprim.cz, systemx.cz and gymstar.cz share IP numbers with isp.systemx.cz.