`mail.matcomp.cz`

CNAME	`matcomp.cz`
DNSSEC	🔒 Signed (DS record present)
A	2a03:1840:1:963::40:101^{🇨🇿 HOST-TELECOM2a03:1840:1::/48 .COM s.r.o.}
		PTR	`asterix2.mathesio.com`
A	176.74.218.200^{🇨🇿 HOST-TELECOM176.74.216.0/21 .COM s.r.o.}
NS	`ns2.web4u.cz` ⭐
		A	2a02:a40:100:28ff::12^{🇨🇿 BlueTone-AS2a02:a40::/32 Ceske Radiokomunikace, a.s.}
			PTR	`ns2.web4u.cz`
		A	85.207.53.12^{🇨🇿 BlueTone-AS85.207.0.0/16 BlueTone-CRa-CZ Fourth address block}
			PTR	`ns2.web4u.cz`
NS	`ns.web4u.cz`
		A	2001:1568:fd::241^{🇨🇿 WEB4U2001:1568::/33}
			PTR	`ns.web4u.cz`
		A	185.14.224.241^{🇨🇿 WEB4U185.14.224.0/23}
			PTR	`ns.web4u.cz`
MX	`hermes.mathesio.com` ⭐
		A	176.74.221.121^{🇨🇿 HOST-TELECOM176.74.216.0/21 .COM s.r.o.}
			PTR	`mail.mathesio.com`
TXT	`MS=ms36109782`
TXT	`v=spf1 a mx ptr ip4:176.74.218.75 ip6:2a03:1840:1:963::40:100 -all`
SOA	`ns.web4u.cz`admin@web4u.cz 2024-10-21 #0

`matcomp.cz`

	DNSSEC	🔒 Signed (DS record present)
	A	2a03:1840:1:963::40:101^{🇨🇿 HOST-TELECOM2a03:1840:1::/48 .COM s.r.o.}
	A	176.74.218.200^{🇨🇿 HOST-TELECOM176.74.216.0/21 .COM s.r.o.}
	NS	`ns2.web4u.cz` ⭐
	NS	`ns.web4u.cz`
	MX	`hermes.mathesio.com` ⭐
	TXT	`MS=ms36109782`
	TXT	`v=spf1 a mx ptr ip4:176.74.218.75 ip6:2a03:1840:1:963::40:100 -all`
	SOA	`ns.web4u.cz`admin@web4u.cz 2024-10-21 #0

Previously MX for

matcomp.cz

Same first word

mail.mx

mail.cy

mail.supply

mail.gov.ae

mail.com.ba

mail.co.zw

mail.org

mail.pixolino.com

mail.ug

mail.ly

mail.gs

mail.bg

mail.wtf

mail.webhop.me

mail.associates

mail.al

mail.myfast.space

mail.vip

mail.red

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mail.pf

mail.com.mx

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mail.training

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mail.cx

mail.gm

mail.su

mail.toshiba

mail.hosting

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mail.party

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mail.coop

mail.directory

mail.freemyip.com

mail.com.tw

mail.hk.com

mail.mh

mail.gov.mw

mail.gov.bn

mail.mmafan.biz

mail.ky

mail.synology-diskstation.de

mail.schoolbus.jp

mail.cn.ua

mail.uz.ua

mail.cool

mail.uk

mail.ru.com

mail.littlestar.jp

mail.com.se

mail.gov.ao

mail.me

mail.ac.gov.br

mail.edu.me

mail.gov.ru

mail.pr

mail.mlbfan.org

mail.ph

mail.nhlfan.net

mail.gru.br

mail.gl

mail.link

mail.no

mail.net.vn

mail.lib.wy.us

mail.pictures

mail.gov.kg

mail.ag

mail.hk

mail.win

mail.net

mail.ne.kr

mail.support

mail.de

mail.hacca.jp

mail.moo.jp

mail.new

mail.teva

mail.gov.al

mail.kapsi.fi

mail.cutegirl.jp

mail.gov.az

mail.io

mail.cash

mail.eus

mail.firewall-gateway.com

mail.pro

mail.pupu.jp

mail.vivian.jp

mail.df.gov.br

mail.ci

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DNS History

2 records (1 active, 1 former)

○A81.91.83.192015-06-12 → 2016-04-18 · 4 obs

● 2015-06-12 22:34:58
● 2016-04-18 10:50:50
○ 2026-04-10 19:27:32
○ 2026-08-01 02:34:08

●CNAMEmatcomp.cz2026-04-10 → 2026-08-01 · 2 obs

● 2026-04-10 19:27:32
● 2026-08-01 02:34:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
matcomp.cz	ns.web4u.cz, ns2.web4u.cz	4 records

✅ Authoritative Response

Server:185.14.224.241

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

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 931ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`matcomp.cz`

📌 Glue Records Collected

Total: 4

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

Analysis

IP Addresses

mail.matcomp.cz directs to two IP numbers, 176.74.218.200 and 2a03:1840:1:963::40:101

dvere-colortap.cz, mail.energy-hub.cz, matcomp.cz plus two other host names have IP numbers in common with mail.matcomp.cz.

Name Servers

DNS delegation for mail.matcomp.cz points to two name servers: ns2.web4u.cz and ns.web4u.cz.

The name server configuration of mail.matcomp.cz is shared with other domains, for instance mitc.cz, edilizio.cz, tentino.net and two others.

ns2.web4u.cz directs to 85.207.53.12 and 2a02:a40:100:28ff::12. ns.web4u.cz directs to 185.14.224.241 and 2001:1568:fd::241. Each host name carries two IP addresses.

Mail Servers

mail.matcomp.cz uses one mail server — hermes.mathesio.com.

The mail server setup of mail.matcomp.cz matches that of other domains such as matcomp.cz, mail.mathesio.com, matesova.cz and two others.

hermes.mathesio.com has exactly one IP number: 176.74.221.121.

mail.matcomp.cz - robtex.com

mail.matcomp.cz

matcomp.cz