`b.mx.a20.cz`

DNSSEC	⚠️ Not signed
A	93.185.100.244^{🇨🇿 VSHOSTING93.185.96.0/20 II.}
		PTR	`sns.nethost.sk`

`mx.a20.cz`

DNSSEC

⚠️ Not signed

MX for

a20.cz

Same first word

b.link

b.co.nl

b.mr

b.ht

b.cm

b.biz

b.asia

b.green

b.co.uk

b.ai

b.akamai-staging.net

b.gov.au

b.fit

b.tc

b.gg

b.com.br

b.tv

b.hu

b.ddns.net

b.bike

b.game

b.to

b.ly

b.com.ua

b.eus

b.cl

b.fr

b.ath.cx

b.mw

b.co.za

b.io

b.ws

b.js.cn

b.je

b.country

b.ro

b.akamaiedge-staging.net

b.top

b.ms

b.ln.cn

b.ua

b.gov.lv

b.co.kr

b.media

b.ee

b.ie

b.com.mx

b.com.de

b.gt

b.gp

b.digital

b.org

b.box

b.new

b.ls

b.st

b.cn

b.co.zw

b.watch

b.kz

b.cz

b.wtf

b.akamaiedge.net

b.my

b.gy

b.edu.vn

b.de

b.hn

b.center

b.movie

b.pl

b.kg

b.capital

b.fashion

b.sg

b.af

b.cc

b.camp

b.org.nz

b.githubusercontent.com

b.fyi

b.bi

b.bw

b.sh

b.vg

b.at

b.is

b.care

b.site

b.ph

b.lu

b.gd

b.ink

b.gold

b.art.pl

b.uy

b.sc

b.co

b.systems

b.s3.amazonaws.com

b.vn.ua

b.beer

b.sk

b.glass

b.cr

b.lol

b.akamai.net

b.cash

b.fi

b.net.nz

b.hr

b.fm

b.company

b.qh.cn

b.app

b.vodka

b.doctor

b.me

b.aivencloud.com

b.br

b.nx.cn

b.cx

b.dk

b.gl

b.et

b.hm

b.info.pl

b.nu

DNS History

2 records (1 active, 1 former)

●A93.185.100.2442026-02-23 → 2026-04-24 · 3 obs

○ 2016-12-22 15:47:16
● 2026-02-23 02:47:24
● 2026-04-24 15:16:10

○A94.138.111.982016-06-13 → 2016-12-22 · 4 obs

● 2016-06-13 17:42:24
● 2016-12-22 15:47:16
○ 2026-02-23 02:47:24
○ 2026-04-24 15:16:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	d.ns.nic.cz, b.ns.nic.cz, a.ns.nic.cz, c.ns.nic.cz	-
a20.cz	a.ns.tojeono.cz, b.ns.tojeono.cz, c.ns.tojeono.cz	3 records

✅ Authoritative Response

Server:85.132.152.123

NS records: a.ns.tojeono.cz, b.ns.tojeono.cz, c.ns.tojeono.cz

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 716ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`93.185.100.244`

📌 Glue Records Collected

Total: 3

Out-of-bailiwick: 3 (a.ns.tojeono.cz, b.ns.tojeono.cz, c.ns.tojeono.cz)

Analysis

Mail Server Role

b.mx.a20.cz serves as the mail server for a20.cz.

Both a.mx.a20.cz and c.mx.a20.cz serve as mail servers together with b.mx.a20.cz.

IP Addresses

b.mx.a20.cz points to an IP address: 93.185.100.244.

other host names include b.mx.forel.sk, b.mx.audiosestry.cz, b.mx.naradicl.cz, b.mx.enaradi.eu and b.mx.nnaradie.sk; they share IP numbers with b.mx.a20.cz.

b.mx.a20.cz - robtex.com

b.mx.a20.cz

mx.a20.cz