`mx.but.cz`

	DNSSEC	⚠️ Not signed
	A	147.229.2.90^{🇨🇿 VUTBR-AS147.229.0.0/17 VUTBR-NET1}

`but.cz`

	DNSSEC	⚠️ Not signed
	A	147.229.2.90^{🇨🇿 VUTBR-AS147.229.0.0/17 VUTBR-NET1}
	NS	`rhino.cis.vutbr.cz` ⭐
	NS	`pipit.cis.vutbr.cz`
	MX	`mailgw1.ro.vutbr.cz` ⭐
	SOA	`rhino.cis.vutbr.cz`hostmaster@vutbr.cz 2025-10-14 #0

Previously MX for

but.cz

Same first word

mx.s3-website-us-east-1.amazonaws.com

mx.design

mx.s3-website-us-west-1.amazonaws.com

mx.msk.ru

mx.scrapping.cc

mx.tv

mx.casino

mx.ma

mx.dyndns.org

mx.sh

mx.ax

mx.lv

mx.abbott

mx.or.at

mx.cn

mx.servebbs.org

mx.microsoft

mx.ph

mx.myftp.biz

mx.com.tr

mx.be

mx.guru

mx.selfip.com

mx.co

mx.ro

mx.com.kz

mx.ru.net

mx.firewall-gateway.de

mx.mayfirst.org

mx.ag

mx.ee

mx.net.ru

mx.fi

mx.cz

mx.co.kr

mx.net

mx.box

mx.homelinux.com

mx.dnsalias.com

mx.se

mx.srv.br

mx.si

mx.de

mx.org.ua

mx.nl

mx.com

mx.co.ua

mx.al

mx

mx.org

mx.net.au

mx.sb

mx.sub.jp

mx.nf

mx.kg

mx.fm

mx.dk

mx.mil.lv

mx.is

mx.ac.cn

mx.uz

mx.mt

mx.lt

mx.co.at

mx.ua

mx.csb.app

mx.au

mx.go.gov.br

mx.com.mx

mx.dev

mx.su

mx.com.au

mx.123hjemmeside.no

mx.cl

mx.by

mx.bplaced.net

mx.uy

mx.dyndns-mail.com

mx.io

mx.co.ke

mx.vg

mx.gp

mx.cloudaccess.net

mx.gs

mx.global.prod.fastly.net

mx.email

mx.com.pt

mx.ru

mx.services

mx.pl

mx.ht

mx.uk

mx.no

mx.cloud.nospamproxy.com

mx.agency

mx.rs

mx.vc

mx.cloudflare.net

mx.ws

mx.plus

mx.zone

mx.co.za

mx.tours

mx.s3.amazonaws.com

mx.com.tw

mx.vu

mx.biz

mx.ms

mx.network

mx.se.gov.br

mx.gy

mx.pe

mx.realm.cz

mx.tn

mx.mk

mx.exchange

mx.kh.ua

mx.md

mx.to

mx.cm

mx.graphics

mx.cx

mx.support

mx.myftp.org

mx.duckdns.org

mx.kinghost.net

mx.gouv.ci

mx.money

mx.kasserver.com

mx.com.ar

mx.sytes.net

mx.center

mx.withyoutube.com

mx.mba

mx.co.uk

mx.s3-website-eu-west-1.amazonaws.com

Similar names

xm.nl

xm.cn

xm.gov.cn

xm.city

xm.ca

xm.ee

xm.ae

xm.lc

xm.chat

xm.life

xm.net

xm.cm

xm.co

xm.com.cn

xm.co.za

xm.kiev.ua

xm.js.cn

xm.cc

xm.by

xm.world

xm.lt

xm.com.ua

xm.ru

xm.de

xm.cl

xm.sk

xm.se

xm.hu

xm.com.co

xm.africa

xm.fi

xm.is

xm.am

xm.money

xm.be

xm.cz

xm.hk.cn

xm.fj.cn

xm.pl

xm.vn.ua

xm.house

xm.mk

xm.com

DNS History

4 records (1 active, 3 former)

●A147.229.2.902026-03-19 → 2026-04-26 · 3 obs

○ 2016-04-22 09:13:08
● 2026-03-19 16:13:24
● 2026-04-26 05:35:04

○A178.217.244.352016-04-22 → 2016-04-22 · 4 obs

○ 2016-02-04 05:23:10
● 2016-04-22 09:13:08
○ 2026-03-19 16:13:24
○ 2026-04-26 05:35:04

○A82.113.55.1262015-08-03 → 2016-02-04 · 4 obs

● 2015-08-03 02:33:00
● 2016-02-04 05:23:10
○ 2016-04-22 09:13:08
○ 2026-04-26 05:35:04

○A82.113.55.912015-08-03 → 2016-02-04 · 4 obs

● 2015-08-03 02:33:00
● 2016-02-04 05:23:10
○ 2016-04-22 09:13:08
○ 2026-04-26 05:35:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
but.cz	rhino.cis.vutbr.cz, pipit.cis.vutbr.cz	4 records

✅ Authoritative Response

Server:147.229.3.10

NS records: rhino.cis.vutbr.cz, pipit.cis.vutbr.cz

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for but.cz (unsigned zone)

⏱️ Timing

Total: 1638ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`147.229.2.90`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (rhino.cis.vutbr.cz, pipit.cis.vutbr.cz, rhino.cis.vutbr.cz...)

Analysis

IP Addresses

mx.but.cz points to an IP address: 147.229.2.90.

other host names include www.fce.but.cz, vutvbrne.cz, cis.vut.cz, www.vutvbrne.cz and zvut.cz; they share IP numbers with mx.but.cz.

mx.but.cz - robtex.com

mx.but.cz

but.cz