`mail.nitschmann.cz`

DNSSEC	⚠️ Not signed
A	81.91.87.10^{🇨🇿 WEB4U81.91.80.0/21}
		PTR	`mail.web4u.cz`

`nitschmann.cz`

	DNSSEC	🔒 Signed (DS record present)
	A	81.91.86.14^{🇨🇿 WEB4U81.91.80.0/21}
	NS	`ns2.web4u.cz` ⭐
	NS	`ns.web4u.cz`
	MX	`nitschmann-cz.mail.protection.outlook.com` ⭐
	TXT	`v=spf1 include:spf.protection.outlook.com -all`
	SOA	`ns.web4u.cz`admin@web4u.cz 2007-10-03 #1

Previously MX for

nitschmann.cz

Same first word

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mail.pl

mail.co.com

mail.perspecta.cloud

mail.ac.id

mail.nu

mail.barcelona

mail.ddns.net

mail.net.kg

mail.qualifioapp.com

mail.photography

mail.net.au

mail.storage

mail.energy

mail.mods.jp

mail.online

mail.ras.ru

mail.ls

mail.app

mail.co.kr

mail.rv.ua

mail.ox.rs

mail.idv.tw

mail.pt

mail.ke

mail.net.sa

mail.idf.il

mail.house

mail.mk

mail.club

mail.news

mail.daa.jp

mail.sd

mail.co.id

mail.top

mail.health-carereform.com

mail.iki.fi

mail.gouv.ml

mail.limited

mail.man

mail.gen.tr

mail.zip

mail.dvrcam.info

mail.gov.gd

mail.brasilia.me

mail.hopto.me

mail.pn

mail.panel.dev

mail.gov.il

mail.ie

mail.co.cr

mail.pa

mail.schaeffler

mail.gov.to

mail.berlin

mail.dynns.com

mail.go.id

mail.rec.br

mail.com.ps

mail.(0x6c6f6c697461)punk.jp

mail.sc

mail.gov.ie

mail.company

mail.gov.mn

mail.priv.pl

mail.mw

mail.gov.na

mail.co.nz

mail.sdscloud.pl

mail.az

mail.is

mail.gov.zw

mail.id

mail.tr

mail.tt

mail.media

mail.vinnica.ua

mail.readymade.jp

mail.raindrop.jp

mail.tj

mail.mydissent.net

mail.spdns.org

mail.lk

mail.fish

mail.pp.ua

mail.fun

mail.no-ip.net

mail.mn

mail.mydns.bz

mail.fem.jp

mail.health

mail.s3.amazonaws.com

mail.gov.ye

mail.com.kg

mail.nra

mail.couchpotatofries.org

mail.radio.fm

mail.od.ua

mail.ms

mail.boleslawiec.pl

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imal.no

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laim.com

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mail.technology

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ailm.de

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mail.se

DNS History

1 record (1 active, 0 former)

●A81.91.87.102015-08-02 → 2026-04-25 · 2 obs

● 2015-08-02 12:46:04
● 2026-04-25 23:55:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
nitschmann.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: 1134ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`81.91.87.10`

📌 Glue Records Collected

Total: 4

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

Analysis

IP Addresses

mail.nitschmann.cz points to IP number 81.91.87.10.

For instance, other host names mail.tipsport.eu, mail.bikesafebox.com, mail.pfmerit.cz, mail.milano-car.eu and mail.fyzioterapie-dobris.cz share IP numbers with mail.nitschmann.cz.

mail.nitschmann.cz - robtex.com