mail.k21.dk - dns.ninja

mail.k21.dk

DNSSEC⚠️ Not signed
A2a02:2350:5:111:8044:dc45:e0fa:1387🇩🇰 ONECOM2a02:2350::/32 One.com A/S
A46.30.215.104🇩🇰 ONECOM46.30.208.0/21 One.com A/S

k21.dk

DNSSEC🔒 Signed (DS record present)
A2a02:2350:5:111:8044:dc45:e0fa:1387🇩🇰 ONECOM2a02:2350::/32 One.com A/S
A46.30.215.104🇩🇰 ONECOM46.30.208.0/21 One.com A/S
NSns01.one.com ⭐
NSns02.one.com
MXmx1.pub.mailpod11-cph3.one.com ⭐
MXmx2.pub.mailpod11-cph3.one.com ⭐
MXmx3.pub.mailpod11-cph3.one.com ⭐
MXmx4.pub.mailpod11-cph3.one.com ⭐
TXTk2945-dk
SOAns01.one.comhostmaster@one.com 2026-06-29 #1
WOT: SAFE (62/100)
WOT: SAFE (68/100)

Previously MX for

k21.dk

Same first word

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DNS History

4 records (2 active, 2 former)

201020122014201620182020202220242026A2a02:2350:5:111:8044:dc45:e0fa:138746.30.215.104195.128.174.7146.30.215.95
○A195.128.174.712009-01-12 → 2016-11-28 · 4 obs
● 2009-01-12 11:18:16
● 2016-11-28 15:49:48
○ 2017-07-12 05:20:18
○ 2026-08-10 21:32:30
●A2a02:2350:5:111:8044:dc45:e0fa:13872026-02-17 → 2026-08-10 · 3 obs
○ 2017-07-12 05:20:18
● 2026-02-17 07:03:02
● 2026-08-10 21:32:30
●A46.30.215.1042026-02-17 → 2026-08-10 · 3 obs
○ 2017-07-12 05:20:18
● 2026-02-17 07:03:02
● 2026-08-10 21:32:30
○A46.30.215.952017-07-12 → 2017-07-12 · 4 obs
○ 2016-11-28 15:49:48
● 2017-07-12 05:20:18
○ 2026-02-17 07:03:02
○ 2026-08-10 21:32:30

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dkb.nic.dk, c.nic.dk, h.nic.dk, l.nic.dk...-
k21.dkns01.one.com, ns02.one.com-

✅ Authoritative Response

Server:195.206.121.10

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

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1987ms | Queries: -

📄 Records

TypeCountSample Data
A146.30.215.104
AAAA12a02:2350:5:111:8044:dc45:e0fa:1387

Analysis

IP Addresses

mail.k21.dk directs to two IP numbers, 46.30.215.104 and 2a02:2350:5:111:8044:dc45:e0fa:1387

Among the host names that share IP numbers with mail.k21.dk are mail.tripolis.se, astronor.com, lanoe.nl and two others.