`mx3.harzner.com`

CNAME	`host220.checkdomain.de`
DNSSEC	⚠️ Not signed
A	91.203.110.220^{🇩🇪 CLOUDPIT91.203.108.0/22}
		PTR	`host220.checkdomain.de`

`harzner.com`

	DNSSEC	⚠️ Not signed
	A	91.203.110.220^{🇩🇪 CLOUDPIT91.203.108.0/22}
	NS	`ns2.checkdomain.de` ⭐
	NS	`ns.checkdomain.de`
	MX	`mx03.secure-mailgate.com` ⭐
	MX	`mx04.secure-mailgate.com`⁽²⁰⁾
	TXT	`v=spf1 include:secure-mailgate.com ?all`
	SOA	`ns.checkdomain.de`hostmaster@checkdomain.de 2026-07-15 #1

Previously MX for

harzner.com

Same first word

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mx3.gov.ru

mx3.fm

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mx3.gov.lk

mx3.uni5.net

mx3.email

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x3m.com

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x3m.pw

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x3m.lu

3xm.info

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m3x.it

3xm.jp

x3m.fi

xm3.org

x3m.ru

x3m.com.co

x3m.se

3xm.at

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m3x.de

x3m.dk

m3x.com

x3m.ch

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x3m.es

3xm.dk

3mx.at

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DNS History

3 records (1 active, 2 former)

○A2001:41d0:700:101a:a5d:283f:acf9:a58c2018-12-11 → 2018-12-11 · 3 obs

● 2018-12-11 21:08:12
○ 2026-07-20 14:02:12
○ 2026-07-20 18:00:40

○A54.36.108.262018-12-11 → 2018-12-11 · 3 obs

● 2018-12-11 21:08:12
○ 2026-07-20 14:02:12
○ 2026-07-20 18:00:40

●CNAMEhost220.checkdomain.de2026-07-20 → 2026-07-20 · 2 obs

● 2026-07-20 14:02:12
● 2026-07-20 18:00:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, i.gtld-servers.net, f.gtld-servers.net, k.gtld-servers.net...	-
harzner.com	ns.checkdomain.de, ns2.checkdomain.de	-

✅ Authoritative Response

Server:5.9.190.98

NS records: ns.checkdomain.de, ns2.checkdomain.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for harzner.com (unsigned zone)

⏱️ Timing

Total: 648ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`host220.checkdomain.de`

Analysis

IP Addresses

mx3.harzner.com points to a single IP number: 91.203.110.220.

Additional host names — kroseberg.name, radsport-duschl.de, schlicht-gmbh.de and two others — share IP numbers with mx3.harzner.com.

mx3.harzner.com - robtex.com

mx3.harzner.com

harzner.com