`mail.klestrup.com`

DNSSEC	⚠️ Not signed
A	176.21.113.227^{🇩🇰 TDC176.21.0.0/16}
		PTR	`176-21-113-227-cable.dk.customer.tdc.net`

`klestrup.com`

	DNSSEC	⚠️ Not signed
	A	176.21.113.227^{🇩🇰 TDC176.21.0.0/16}
	NS	`ns01.one.com` ⭐
	NS	`ns02.one.com`
	MX	`klestrup.com` ⭐
	TXT	`v=spf1 a mx ip4:176.21.113.227 -all`
	SOA	`ns01.one.com`hostmaster@one.com 2026-04-14 #1

Previously MX for

klestrup.com

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DNS History

2 records (1 active, 1 former)

●A176.21.113.2272026-03-22 → 2026-05-10 · 3 obs

○ 2016-04-08 08:16:56
● 2026-03-22 04:38:40
● 2026-05-10 08:55:14

○A83.93.40.502015-06-01 → 2016-04-08 · 4 obs

● 2015-06-01 03:24:22
● 2016-04-08 08:16:56
○ 2026-03-22 04:38:40
○ 2026-05-10 08:55:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, k.gtld-servers.net, f.gtld-servers.net, i.gtld-servers.net...	-
klestrup.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: 329ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`176.21.113.227`

📌 Glue Records Collected

Total: 4

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

Analysis

IP Addresses

mail.klestrup.com maps to IP address 176.21.113.227.

Other host names such as www.cmk.dk, klestrup.com, 176-21-113-227-cable.dk.customer.tdc.net and cmk.dk share IP numbers with mail.klestrup.com.

mail.klestrup.com - robtex.com