`ub.cz`

DNSSEC	🔒 Signed (DS record present)
A	46.101.70.126^{🇩🇪 DIGITALOCEAN46.101.68.0/22 DigitalOcean}
NS	`ns1.netplus.cz` ⭐
		A	81.0.235.1^{🇨🇿 CASABLANCA-AS81.0.232.0/21 Casablanca INT}
			PTR	`dns.nethost.cz`
NS	`ns2.netplus.cz`
		A	93.185.100.244^{🇨🇿 VSHOSTING93.185.96.0/20 II.}
			PTR	`sns.nethost.sk`
MX	`mail.ub.cz` ⭐
		A	212.47.24.143^{🇨🇿 TMOBILE-CZ212.47.0.0/19 T-Mobile Czech Republic a.s.}
			PTR	`mail.ub.cz`
MX	`mail-relay-1.nethost.cz`⁽²⁰⁾
		A	2a00:1ed0:46:200::1212:247^{🇨🇿 VSHOSTING2a00:1ed0::/32}
			PTR	`sns.nethost.sk`
		A	93.185.100.244^{🇨🇿 VSHOSTING93.185.96.0/20 II.}
			PTR	`sns.nethost.sk`
TXT	`MS=FEECCC604FB9D50E082132087323A1F78D5CDD6C`
TXT	`clipsan._domainkey.ub.cz`
TXT	`v=spf1 a:mail.ub.cz include:_spf.forpsi.com include:spf.protection.outlook.co...`
SOA	`ns1.netplus.cz`admin@netplus.cz 2026-03-02 #0

`cz`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.ns.nic.cz` ⭐ 🔒
	NS	`b.ns.nic.cz` 🔒
	NS	`c.ns.nic.cz` 🔒
	NS	`d.ns.nic.cz` 🔒
	SOA	`a.ns.nic.cz`hostmaster@nic.cz serial=1771291036

rank #632545 globally
rank #2916 in the tld
📈 Tranco rank: #916,819

Subdomains

gate.ub.cz

mesto.ub.cz

mail.ub.cz

Same first word

ub.se

ub.la

ub.ms

ub.com.es

ub.edu

ub.sk

ub.eu

ub.cn

ub.biz

ub.cz

ub.org.vn

ub.city

ub.nl

ub.co

ub.cc

ub.de

ub.diskstation.me

ub.edu.bs

ub.vc

ub.no

ub.ac.id

ub.edu.bz

ub.edu.ar

ub.edu.bo

ub.gov.mn

ub.net.tr

ub.kz

ub.com

ub.gs

ub.bw

ub.wtf

ub.web.tr

ub.blue

ub.ac

ub.business

ub.net

ub.ua

ub.tc

ub.ro

ub.dk

ub.cat

ub.edu.sa

ub.bike

ub.fi

ub.es

ub.com.ua

ub.kiev.ua

ub.edu.bi

ub.chat

ub.co.ke

ub.am

ub.kg

ub.net.cn

ub.org.bo

ub.ac.ir

ub.tv

ub.ag

ub.lt

ub.bet

ub.life

ub.lv

ub.edu.vn

ub.world

ub.ca

ub.azurewebsites.net

ub.com.hk

ub.be

ub.io

ub.org

ub.nic.in

ub.com.vn

ub.edu.ph

ub.mn

ub.hu

ub.com.tr

ub.ru

Similar names

bu.hu

bu.edu

bu.fyi

bu.wtf

bu.ru

bu.bb

bu.st

bu.lk

bu.is

bu.no

bu.edu.tr

bu.ca

bu.net

bu.ac.kr

bu.co.uk

bu.sh.cn

bu.spb.ru

bu.gen.tr

bu.ke

bu.org.au

bu.cz

bu.to

bu.soccer

bu.com.ua

bu.com

bu.amsterdam

bu.style

bu.tel

bu.si

bu.se

bu.nl

bu.cl

bu.edu.mx

bu.edu.sa

bu.net.tr

bu.net.au

bu.edu.eg

bu.edu.kg

bu.edu.af

bu.mp

bu.tt

bu.fi

bu.lt

bu.ac.th

bu.ae

bu.lc

bu.md

bu.life

bu.co.kr

bu.be

bu.gg

bu.org.tr

bu.vc

bu.com.tw

bu.cc

bu.pl

bu.s3.amazonaws.com

bu.cx

bu.com.co

bu.am

bu.by

bu.com.tr

bu.gy

DNS History

10 records (5 active, 5 former)

○NSns.hitech.cz2015-07-23 → 2015-11-11 · 4 obs

● 2015-07-23 11:57:22
● 2015-11-11 20:46:02
○ 2015-12-17 02:11:26
○ 2026-03-10 02:39:00

○NSns1.hitech.cz2015-07-23 → 2015-11-11 · 4 obs

● 2015-07-23 11:57:22
● 2015-11-11 20:46:02
○ 2015-12-17 02:11:26
○ 2026-03-10 02:39:00

●NSns1.netplus.cz2015-12-17 → 2026-03-10 · 3 obs

○ 2015-11-11 20:46:02
● 2015-12-17 02:11:26
● 2026-03-10 02:39:00

●NSns2.netplus.cz2015-12-17 → 2026-03-10 · 3 obs

○ 2015-11-11 20:46:02
● 2015-12-17 02:11:26
● 2026-03-10 02:39:00

○NSns2.sloane.cz2015-07-23 → 2015-11-11 · 4 obs

● 2015-07-23 11:57:22
● 2015-11-11 20:46:02
○ 2015-12-17 02:11:26
○ 2026-03-10 02:39:00

●MXmail-relay-1.nethost.cz2026-02-25 → 2026-03-10 · 3 obs

○ 2017-01-09 02:53:36
● 2026-02-25 23:32:28
● 2026-03-10 02:39:00

●MXmail.ub.cz2015-07-23 → 2026-03-10 · 2 obs

● 2015-07-23 11:57:22
● 2026-03-10 02:39:00

○MXrelay.nwt.cz2015-07-23 → 2017-01-09 · 4 obs

● 2015-07-23 11:57:22
● 2017-01-09 02:53:36
○ 2026-02-25 23:32:28
○ 2026-03-10 02:39:00

○A212.47.24.1402015-07-23 → 2017-01-09 · 4 obs

● 2015-07-23 11:57:22
● 2017-01-09 02:53:36
○ 2026-02-25 23:32:28
○ 2026-03-10 02:39:00

●A46.101.70.1262026-02-25 → 2026-03-10 · 3 obs

○ 2017-01-09 02:53:36
● 2026-02-25 23:32:28
● 2026-03-10 02:39:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
ub.cz	ns1.netplus.cz, ns2.netplus.cz	2 records

✅ Authoritative Response

Server: 81.0.235.1

NS records: ns1.netplus.cz, ns2.netplus.cz

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1149ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`46.101.70.126`
NS	2	`ns2.netplus.cz, ns1.netplus.cz`
MX	2	`mail.ub.cz (pri: 10), mail-relay-1.nethost.cz (pri: 20)`
TXT	3	`clipsan._domainkey.ub.cz, MS=FEECCC604FB9D50E082132087323A1F78D5CD...`
SOA	1	`ns1.netplus.cz admin.netplus.cz`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.netplus.cz, ns2.netplus.cz)

Analysis

Hierarchy

ub.cz is a parent of gate.ub.cz, mesto.ub.cz and mail.ub.cz.

IP Addresses

ub.cz resolves to one IP number: 46.101.70.126.

Other host names, for instance obechruska.cz, www.nemcicenh.cz, vyskytna.cz, nemcicenh.cz and www.uherskybrod.cz share IP numbers with ub.cz.

Name Servers

ub.cz's delegation uses two name servers: ns1.netplus.cz and ns2.netplus.cz.

ub.cz uses the same name server setup as other domains, such as (0x636f636b)er.cz, tsub.cz, dolni-nemci.cz, dermacentrum.cz and lask.cz.

ub.cz shares name servers with other domains at least partially, for example atlastextilu.cz and skanzen.nulk.cz.

Host names with a single IP address: ns1.netplus.cz points to 81.0.235.1; ns2.netplus.cz points to 93.185.100.244.

Mail Servers

ub.cz is served by two mail servers mail-relay-1.nethost.cz and mail.ub.cz.

ub.cz shares at least some mail servers with other domains, for example lkwrusnak.sk, opatisk.info, bowers-wilkins.cz, hocker.cz and oknotherm.at.

These mail servers are commonly used with the servers mail-2.nethost.cz, mail-1.hostime.cz, mail-1.nethost.cz, web.acomputer.cz, choke.detepak.cz, mail-4.nethost.cz, server18.viwefix.cz and jupiter.mediahost.sk.

Host names with two IP numbers: mail-relay-1.nethost.cz points to 2a00:1ed0:46:200::1212:247 and 93.185.100.244.

Host names with one IP number: mail.ub.cz points to 212.47.24.143.

ub.cz - robtex.com

ub.cz

cz

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`ub.cz`

`cz`