`mx2.koester.eu`

DNSSEC	⚠️ Not signed
A	90.187.67.69^{🇩🇪 AS320990.187.0.0/16}
		PTR	`business-90-187-67-69.pool2.vodafone-ip.de`

`koester.eu`

	DNSSEC	⚠️ Not signed
	A	178.254.18.47
	NS	`ns.udag.de` ⭐
	NS	`ns.udag.net`
	NS	`ns.udag.org`
	MX	`mx1.koester.eu` ⭐
	MX	`mx2.koester.eu`⁽²⁰⁾
	MX	`mx3.koester.eu`⁽³⁰⁾
	TXT	`_autodiscover._tcp TTL IN SRV 10 WEIGHT 443 91.249.216.98`
	TXT	`MS=01CEA0F2F46CA61D6C25B2EA785315D70CE552D7`
	TXT	`v=spf1 mx a:smtp.bents-gruppe.de include:_smtp.udag.de ip4:83.138.69.164 ip4:...`
	SOA	`ns.udag.de`hostmaster@united-domains.de 2024-11-27 #54

📈 Tranco rank: #877,614

MX for

koster.eu

kosterusa.com

koester.eu

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DNS History

1 record (1 active, 0 former)

●A90.187.67.692026-02-20 → 2026-05-14 · 2 obs

● 2026-02-20 11:35:28
● 2026-05-14 16:50:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
eu	w.dns.eu, x.dns.eu, y.dns.eu, be.dns.eu...	-
koester.eu	ns.udag.de, ns.udag.org, ns.udag.net	-

✅ Authoritative Response

Server:185.132.33.253

NS records: ns.udag.de, ns.udag.org, ns.udag.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for koester.eu (unsigned zone)

⏱️ Timing

Total: 4057ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`90.187.67.69`

Analysis

Mail Server Role

mx2.koester.eu is used as a mail server for koster.eu, kosterusa.com and koester.eu.

mx1.koester.eu and mx3.koester.eu are commonly used as mail server together with mx2.koester.eu.

IP Addresses

mx2.koester.eu points to a single IP number: 90.187.67.69.

mx2.koester.eu - robtex.com

mx2.koester.eu

koester.eu