`mail.building21.de`

DNSSEC	⚠️ Not signed
A	85.13.129.4^{🇩🇪 NMM-AS85.13.129.0/24 Neue Medien Muennich}
		PTR	`dd50712.kasserver.com`

`building21.de`

	DNSSEC	⚠️ Not signed
	A	85.13.129.4^{🇩🇪 NMM-AS85.13.129.0/24 Neue Medien Muennich}
	NS	`ns5.kasserver.com` ⭐
	NS	`ns6.kasserver.com`
	MX	`v113417.kasserver.com` ⭐
	TXT	`v=spf1 a mx include:spf.kasserver.com ~all`
	SOA	`ns5.kasserver.com`hostmaster@kasserver.com serial=2603041209

MX for

complex17.net

Previously MX for

building21.de

Same first word

mail.red

mail.co.il

mail.pf

mail.com.mx

mail.uy

mail.gt

mail.training

mail.cd

mail.in.ua

mail.cx

mail.gm

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mail.pr

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mail.ph

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mail.lviv.ua

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mail.lima-city.de

mail.mysecuritycamera.com

mail.microsoft

mail.mil.tw

mail.org.in

mail.deals

mail.edu.pl

mail.cfolks.pl

mail.cm

Similar names

alim.biz

mail.mil.cn

mail.poivron.org

lami.com.co

mail.dnshome.de

mail.jp

mail.mp

mail.ac

mail.fund

lima.world

mail.edu.bi

almi.de

mail.uk.com

mail.mysecuritycamera.net

iaml.dj

mila.co.uk

lima.co.za

mali.cc

mail.glass

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imal.net

mail.dog

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mail.ddns.me

mail.gov.bh

mail.tours

mila.nu

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mila.te.ua

mail.srl

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mail.chicappa.jp

lami.be

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mail.123hjemmeside.no

mail.fantasyleague.cc

amil.org

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lima.cafe

mail.ge

lima.es

liam.codes

mial.org

mail.egoism.jp

mail.jpn.org

mail.run

imla.org.uk

mail.co.education

mail.edu.rs

liam.tv

mali.hr

liam.me

mail.lt

mila.dk

mail.vn

mila.support

almi.fr

mila.vn

mail.sl

mail.gov.mu

liam.ddns.me

mail.gov.in

imal.de

mail.uz

mail.clinic

mail.bm

mila.pl

lima.info

aiml.digital

lima.eu

mail.com.pk

mail.hl.cn

mail.nhs.uk

mail.hotmail

almi.com.ua

mail.gov.om

mila.nl

mail.canon

lima.ch

mail.net.hk

lima.rocks

mila.club

mail.as

mali.sk

amil.one

mail.ir

almi.es

mila.ch

mail.net.ru

lami.me

DNS History

1 record (1 active, 0 former)

●A85.13.129.42015-05-19 → 2026-04-12 · 2 obs

● 2015-05-19 05:43:50
● 2026-04-12 14:18:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
building21.de	ns5.kasserver.com, ns6.kasserver.com	-

✅ Authoritative Response

Server:85.13.128.3

NS records: ns5.kasserver.com, ns6.kasserver.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for building21.de (unsigned zone)

⏱️ Timing

Total: 625ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`85.13.129.4`

Analysis

Mail Server Role

mail.building21.de is the mail server for complex17.net.

IP Addresses

mail.building21.de maps to IP address 85.13.129.4.

Other host names, for instance mail.kraks.de, w01a1a05.kasserver.com, w00c0296.kasserver.com, www.pixel-heaven.net and w00cdeac.kasserver.com share IP numbers with mail.building21.de.

mail.building21.de - robtex.com