qtb.cz - robtex.com

qtb.cz

DNSSEC⚠️ Not signed
A81.2.196.19🇨🇿 INTERNET-CZ81.2.192.0/18 INTERNET CZ, a.s.
PTR19.196.forpsi.net
NSns.forpsi.net ⭐
A2001:15e8:101:1::c282🇨🇿 INTERNET-CZ2001:15e8::/32
PTRns.forpsi.net
A81.2.194.130🇨🇿 INTERNET-CZ81.2.192.0/18 INTERNET CZ, a.s.
PTRns.forpsi.net
NSns.forpsi.cz
A2001:15e8:201:1::d1b9🇨🇿 INTERNET-CZ2001:15e8::/32
PTRns.forpsi.cz
A81.2.209.185🇨🇿 INTERNET-CZ81.2.209.0/24
PTRns.forpsi.cz
NSns.forpsi.it
A2a00:6d41:2:1::5🇮🇹 ARUBA-ASN2a00:6d41::/32 Aruba S.p.A. IPv6 Network
PTRns.forpsi.it
A95.110.254.165🇮🇹 ARUBA-ASN95.110.192.0/18 Aruba S.p.A. Network
PTRhost165-254-110-95.serverdedicati.aruba.it
MXmail.qtb.cz ⭐
A77.236.217.213🇨🇿 EDERA_Group77.236.192.0/19 Network of Edera.cz
PTRmail.rednetcloud.cz
MXbackupmail.red-net.cz(1000)
A90.176.154.245🇨🇿 O2-CZECH-REPUBLIC90.176.128.0/17 CZ.CZNET
PTR90-176-154-245.rcj.o2.cz
TXTv=spf1 ip4:77.236.217.213 mx:mail.qtb.cz ~all
SOAns.forpsi.netadmin@forpsi.com 2026-03-29 #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=1776035860

Same first word

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qbt.net

DNS History

6 records (6 active, 0 former)

NSns.forpsi.czns.forpsi.itns.forpsi.netMXbackupmail.red-net.czmail.qtb.czA81.2.196.19
●NSns.forpsi.cz2026-03-20 → 2026-04-12 · 2 obs
● 2026-03-20 06:43:10
● 2026-04-12 23:28:40
●NSns.forpsi.it2026-03-20 → 2026-04-12 · 2 obs
● 2026-03-20 06:43:10
● 2026-04-12 23:28:40
●NSns.forpsi.net2026-03-20 → 2026-04-12 · 2 obs
● 2026-03-20 06:43:10
● 2026-04-12 23:28:40
●MXbackupmail.red-net.cz2026-03-20 → 2026-04-12 · 2 obs
● 2026-03-20 06:43:10
● 2026-04-12 23:28:40
●MXmail.qtb.cz2026-03-20 → 2026-04-12 · 2 obs
● 2026-03-20 06:43:10
● 2026-04-12 23:28:40
●A81.2.196.192026-03-20 → 2026-04-12 · 2 obs
● 2026-03-20 06:43:10
● 2026-04-12 23:28:40

🔍 DNS Trace

Analysis

IP Addresses

qtb.cz points to a single IP address: 81.2.196.19.

Other host names such as jagnet.cz, smsflirt.cz, dscom.cz, decodance.cz and zamboni.cz share IP numbers with qtb.cz.

Name Servers

qtb.cz is delegated to three name servers: ns.forpsi.cz, ns.forpsi.it and ns.forpsi.net.

At least part of the name servers for qtb.cz are shared with other domains, for instance one-it.eu, alpy-info.net, obeclehnice.sk, frunek.eu and mtaplus.sk.

These name servers are commonly used alongside the name servers ns.forpsi.us.

Host names with two IP numbers:

ns.forpsi.cz points to 2001:15e8:201:1::d1b9 and 81.2.209.185

ns.forpsi.it points to 2a00:6d41:2:1::5 and 95.110.254.165

ns.forpsi.net points to 2001:15e8:101:1::c282 and 81.2.194.130

Mail Servers

qtb.cz is handled by two mail servers: mail.qtb.cz and backupmail.red-net.cz.

qtb.cz shares at least some mail servers with other domains, for example nacatering.cz, esof.cz, apep.cz, sportmatten.com and hansa-shop.cz.

these mail servers are commonly used alongside mail.czstavhold.cz, mail.sportmatten.com, mail.red-net.cz, mail.rednetcloud.cz, mail.nacatering.cz and mail.esof.cz.

Hostnames with a single IP

mail.qtb.cz resolves to: 77.236.217.213.

backupmail.red-net.cz resolves to: 90.176.154.245.