`smtp.sb-computer.de`

DNSSEC	⚠️ Not signed
A	5.1.78.20^{🇩🇪 CREOLINE-AS5.1.78.0/24}
		PTR	`web.tz-rz.net`

`sb-computer.de`

	DNSSEC	⚠️ Not signed
	A	2a07:6fc0:1:0:78::20^{🇩🇪 CREOLINE-AS2a07:6fc0:1::/48}
	A	5.1.78.20^{🇩🇪 CREOLINE-AS5.1.78.0/24}
	NS	`ns1.creolineserver.com` ⭐
	NS	`ns2.creolineserver.com`
	NS	`ns3.creolineserver.com`
	NS	`ns4.creolineserver.com`
	MX	`sbcomputer-de0e.mail.protection.outlook.com` ⭐
	TXT	`v=spf1 include:spf.protection.outlook.com include:_spf.creoline.de include:au...`
	TXT	`creoline-domain-verification=0aa139d231cefcb63da65402f78c6eed96310bb0`
	SOA	`ns1.creolineserver.com`hotd@tz-steinfurt.de 2026-03-27 #4

Previously MX for

sb-computer.de

Same first word

smtp.tools

smtp.com

smtp.com.mx

smtp.sk

smtp.co.hu

smtp.ws

smtp.uni5.net

smtp.jc.neen.it

smtp.vn

smtp.to

smtp.mircloud.host

smtp.demo.jelastic.com

smtp.gouv.km

smtp.hotmail

smtp.com.ph

smtp.be

smtp.nz

smtp.moe

smtp.re

smtp.ms

smtp.ca

smtp.paas.datacenter.fi

smtp.fm

smtp.co.ke

smtp.lt

smtp.fi.cloudplatform.fi

smtp.de

smtp.services

smtp.live

smtp.fi

smtp.uk

smtp.or.tz

smtp.cloudaccess.net

smtp.cat

smtp.az

smtp.dev

smtp.unicloud.pl

smtp.paas.massivegrid.com

smtp.mil.tw

smtp.it

smtp.solutions

smtp.gouv.ml

smtp.pythonanywhere.com

smtp.li

smtp.ru

smtp.se

smtp.co.za

smtp.mydns.jp

smtp.gc.ca

smtp.me

smtp.fi.it

smtp.rs.gov.br

smtp.gov.ru

smtp.business

smtp.ooo

smtp.jelastic.saveincloud.net

smtp.in

smtp.net.au

smtp.to.gov.br

smtp.com.br

smtp.fun

smtp.agency

smtp.pt

smtp.myshopify.com

smtp.ee

smtp.im

smtp.jelastic.dogado.eu

smtp.lat

smtp.cl

smtp.mk

smtp.lu

smtp.id

smtp.eu

smtp.fail

smtp.bz

smtp.ro

smtp.pl

smtp.goog

smtp.news

smtp.j.scaleforce.net

smtp.lv

smtp.fr

smtp.store

smtp.gratis

smtp.co.at

smtp.gov.ps

smtp.gov.rs

smtp.eu.org

smtp.sc.gov.br

smtp.in-berlin.de

smtp.appengine.flow.ch

smtp.kinghost.net

smtp.org

smtp.es-1.axarnet.cloud

smtp.co.kr

smtp.(0x787878)

smtp.co.nz

smtp.kz

smtp.com.tr

smtp.jcloud.kz

smtp.sp.gov.br

smtp.net.ru

smtp.edu.ee

smtp.directory

smtp.j.layershift.co.uk

smtp.net.ua

smtp.hu

smtp.mail.pl

smtp.iki.fi

smtp.org.uk

smtp.at

smtp.com.au

smtp.pi.gov.br

smtp.tv

smtp.vg

smtp.ox.rs

smtp.co

smtp.su

smtp.radio.fm

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stmp.ca

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stpm.com.au

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tspm.ch

stpm.com

pmts.nl

mpts.de

tmps.biz

pmst.se

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tmps.eu

tpms.zone

tmps.dk

tpms.me

mpts.com.ph

sptm.com.my

psmt.edu

tspm.com.tw

tpms.od.ua

stmp.sk

tpms.co.il

mpts.com

pmts.co.uk

mtsp.in

tmsp.io

tsmp.com.cn

mpts.be

mpts.nl

spmt.com

spmt.in

smpt.at

ptms.com

mstp.ru

ptsm.de

tsmp.com.sg

tpms.com

pmts.in

mtps.com

tmps.ru

tpms.ch

tsmp.co.uk

stmp.com

pmts.cc

mpts.ru

tmps.com.au

sptm.com.au

pstm.my

tpms.co.nz

tpms.cz

tmsp.co.jp

tpms.tools

mtsp.com.my

tpms.co

mpts.us

mtsp.me

mtsp.info

smpt.com

mtps.us

smpt.ch

stmp.cn

ptms.com.tw

pmst.pl

tspm.ru

smpt.org

ptms.ca

pmts.net

DNS History

3 records (1 active, 2 former)

○A188.40.55.2132017-01-05 → 2017-01-05 · 3 obs

○ 2016-10-26 16:32:08
● 2017-01-05 06:41:02
○ 2026-04-15 14:29:02

○A37.143.35.1382016-10-26 → 2016-10-26 · 3 obs

● 2016-10-26 16:32:08
○ 2017-01-05 06:41:02
○ 2026-04-15 14:29:02

●A5.1.78.202026-04-15 → 2026-04-15 · 2 obs

○ 2017-01-05 06:41:02
● 2026-04-15 14:29:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, z.nic.de, f.nic.de	-
sb-computer.de	ns1.creolineserver.com, ns3.creolineserver.com, ns2.creolineserver.com, ns4.creolineserver.com	-

✅ Authoritative Response

Server:185.136.97.170

NS records: ns1.creolineserver.com, ns3.creolineserver.com, ns2.creolineserver.com, ns4.creolineserver.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sb-computer.de (unsigned zone)

⏱️ Timing

Total: 674ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`5.1.78.20`

Analysis

IP Addresses

smtp.sb-computer.de points to a single IP address: 5.1.78.20.

Other host names such as xn--tierarzt-mnster-nord-yec.de, hostmaster.kli.de, exact-colors.com, golfschule-rehbock.de and kli-rheine.de share IPs with smtp.sb-computer.de.

smtp.sb-computer.de - robtex.com