`mail.group-4u.com`

	DNSSEC	⚠️ Not signed
	A	195.249.40.25^{🇩🇰 TDC195.249.0.0/16 Tele Danmark}

`group-4u.com`

	DNSSEC	⚠️ Not signed
	A	195.249.40.15^{🇩🇰 TDC195.249.0.0/16 Tele Danmark}
	NS	`ns01.one.com` ⭐
	NS	`ns02.one.com`
	MX	`nn1p.nettonet.dk` ⭐
	SOA	`ns01.one.com`hostmaster@one.com 2026-07-20 #1

Previously MX for

group-4u.com

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DNS History

1 record (1 active, 0 former)

●A195.249.40.252015-08-09 → 2026-08-08 · 2 obs

● 2015-08-09 22:06:12
● 2026-08-08 00:01:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	g.gtld-servers.net, a.gtld-servers.net, h.gtld-servers.net, i.gtld-servers.net...	-
group-4u.com	ns01.one.com, ns02.one.com	4 records

✅ Authoritative Response

Server:185.10.11.10

NS records: ns01.one.com, ns02.one.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 466ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`195.249.40.25`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns01.one.com, ns01.one.com, ns02.one.com...)

Analysis

IP Addresses

mail.group-4u.com points to a single IP number: 195.249.40.25.

Additional host names — mail.carrace.dk, mail.mentorroom.com, mail.kfa.dk and two others — share IP numbers with mail.group-4u.com.

mail.group-4u.com - robtex.com

mail.group-4u.com

group-4u.com