concern.dk - dns.ninja

`concern.dk`

DNSSEC	🔒 Signed (DS record present)
A	195.47.247.18^{ONECOM195.47.247.0/24 One.com A/S}
		PTR	`one.com.webforward.g1i.one`
NS	`ns01.one.com` ⭐
		A	2001:67c:28cc::10^{ONECOM-INFRA2001:67c:28cc::/48}
			PTR	`ns01.one.com`
		A	195.206.121.10^{ONECOM-INFRA195.206.121.0/24}
			PTR	`ns01.one.com`
NS	`ns02.one.com`
		A	2001:67c:3c0::10^{🇩🇰 ONECOM2001:67c:3c0::/48}
			PTR	`ns02.one.com`
		A	185.10.11.10^{ONECOM185.10.11.0/24}
			PTR	`ns02.one.com`
MX	`mx1.pub.mailpod10-cph3.one.com` ⭐
		A	104.37.34.70^{🇩🇰 ONECOM104.37.32.0/21 One.com A/S}
			PTR	`mx1.pub.mailpod10-cph3.one.com`
MX	`mx2.pub.mailpod10-cph3.one.com` ⭐
		A	104.37.34.71^{🇩🇰 ONECOM104.37.32.0/21 One.com A/S}
			PTR	`mx2.pub.mailpod10-cph3.one.com`
MX	`mx3.pub.mailpod10-cph3.one.com` ⭐
		A	104.37.34.72^{🇩🇰 ONECOM104.37.32.0/21 One.com A/S}
			PTR	`mx3.pub.mailpod10-cph3.one.com`
MX	`mx4.pub.mailpod10-cph3.one.com` ⭐
		A	104.37.34.73^{🇩🇰 ONECOM104.37.32.0/21 One.com A/S}
			PTR	`mx4.pub.mailpod10-cph3.one.com`
SOA	`ns01.one.com`hostmaster@one.com 2026-06-04 #4

`dk`

	DNSSEC	🔒 Signed (DS record present)
	NS	`b.nic.dk` ⭐
	NS	`c.nic.dk`
	NS	`h.nic.dk`
	NS	`l.nic.dk`
	NS	`s.nic.dk`
	NS	`t.nic.dk`
	TXT	`DK zone updateEpoch 1781521201localtime Mon Jun 15 13:00:01 2026gmtime Mon Ju...`
	SOA	`b.nic.dk`tech@punktum.dk serial=1781521201

Same first word

concern.se

concern.us

concern.sakura.ne.jp

concern.or.kr

concern.kz

concern.com

concern.ca

concern.in

concern.group

concern.biz

concern.eu

concern.be

concern.es

concern.org.uk

concern.nl

concern.co.nz

concern.dk

concern.de

concern.cn

concern.com.tw

concern.com.my

concern.com.ua

concern.info

concern.demon.nl

concern.com.sg

concern.co.jp

concern.ie

concern.net

Similar names

renccon.com

norccen.com

DNS History

16 records (7 active, 9 former)

●NSns01.one.com2015-08-06 → 2026-06-15 · 2 obs

● 2015-08-06 22:13:30
● 2026-06-15 11:02:56

●NSns02.one.com2015-08-06 → 2026-06-15 · 2 obs

● 2015-08-06 22:13:30
● 2026-06-15 11:02:56

●MXmx1.pub.mailpod10-cph3.one.com2026-03-23 → 2026-06-15 · 3 obs

○ 2018-12-15 13:35:56
● 2026-03-23 19:57:20
● 2026-06-15 11:02:56

○MXmx1.pub.mailpod5-cph3.one.com2018-12-15 → 2018-12-15 · 4 obs

○ 2017-02-12 16:30:06
● 2018-12-15 13:35:56
○ 2026-03-23 19:57:20
○ 2026-06-15 11:02:56

●MXmx2.pub.mailpod10-cph3.one.com2026-03-23 → 2026-06-15 · 3 obs

○ 2018-12-15 13:35:56
● 2026-03-23 19:57:20
● 2026-06-15 11:02:56

○MXmx2.pub.mailpod5-cph3.one.com2018-12-15 → 2018-12-15 · 4 obs

○ 2017-02-12 16:30:06
● 2018-12-15 13:35:56
○ 2026-03-23 19:57:20
○ 2026-06-15 11:02:56

●MXmx3.pub.mailpod10-cph3.one.com2026-03-23 → 2026-06-15 · 3 obs

○ 2018-12-15 13:35:56
● 2026-03-23 19:57:20
● 2026-06-15 11:02:56

○MXmx3.pub.mailpod5-cph3.one.com2018-12-15 → 2018-12-15 · 4 obs

○ 2017-02-12 16:30:06
● 2018-12-15 13:35:56
○ 2026-03-23 19:57:20
○ 2026-06-15 11:02:56

●MXmx4.pub.mailpod10-cph3.one.com2026-03-23 → 2026-06-15 · 3 obs

○ 2018-12-15 13:35:56
● 2026-03-23 19:57:20
● 2026-06-15 11:02:56

○MXmxcluster1.one.com2015-08-06 → 2017-02-12 · 4 obs

● 2015-08-06 22:13:30
● 2017-02-12 16:30:06
○ 2018-12-15 13:35:56
○ 2026-06-15 11:02:56

○MXmxcluster2.one.com2015-08-06 → 2017-02-12 · 4 obs

● 2015-08-06 22:13:30
● 2017-02-12 16:30:06
○ 2018-12-15 13:35:56
○ 2026-06-15 11:02:56

●A195.47.247.182026-03-23 → 2026-06-15 · 3 obs

○ 2018-12-15 13:35:56
● 2026-03-23 19:57:20
● 2026-06-15 11:02:56

○A46.30.211.2222017-02-12 → 2017-02-12 · 4 obs

○ 2016-04-28 15:44:24
● 2017-02-12 16:30:06
○ 2018-12-15 13:35:56
○ 2026-06-15 11:02:56

○A46.30.211.322016-02-14 → 2016-04-28 · 5 obs

○ 2015-12-04 11:35:38
● 2016-02-14 14:55:32
● 2016-04-28 15:44:24
○ 2017-02-12 16:30:06
○ 2026-06-15 11:02:56

○A46.30.212.1072015-08-06 → 2015-12-04 · 4 obs

● 2015-08-06 22:13:30
● 2015-12-04 11:35:38
○ 2016-02-14 14:55:32
○ 2026-06-15 11:02:56

○A46.30.213.622018-12-15 → 2018-12-15 · 4 obs

○ 2017-02-12 16:30:06
● 2018-12-15 13:35:56
○ 2026-03-23 19:57:20
○ 2026-06-15 11:02:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dk	b.nic.dk, h.nic.dk, t.nic.dk, c.nic.dk...	12 records
concern.dk	ns02.one.com, ns01.one.com	-

✅ Authoritative Response

Server:195.206.121.10

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

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 979ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`195.47.247.18`
NS	2	`ns01.one.com, ns02.one.com`
MX	4	`mx2.pub.mailpod10-cph3.one.com (pri: 10), mx1.pub.mailpod10-cph3.one.com (pri: 10)...`
SOA	1	`ns01.one.com hostmaster.one.com`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (b.nic.dk, b.nic.dk, h.nic.dk...)

Analysis

IP Addresses

concern.dk points to a single IP number: 195.47.247.18.

Additional host names — kongaa.net, deepimprint.se, 1mail2.com and two others — share IP numbers with concern.dk.

Name Servers

The NS records for concern.dk delegate to ns01.one.com and ns02.one.com.

concern.dk shares its name server setup with other domains, including vedlager.se, art-transport.co.uk, bela.no and two others.

concern.dk and other domains like duus.com share at least a portion of their name servers.

ns01.one.com resolves to 195.206.121.10 and 2001:67c:28cc::10. Likewise, ns02.one.com resolves to 185.10.11.10 and 2001:67c:3c0::10 — two IP addresses apiece.

Mail Servers

Mail for concern.dk is handled by four mail servers: mx1.pub.mailpod10-cph3.one.com, mx2.pub.mailpod10-cph3.one.com, mx3.pub.mailpod10-cph3.one.com and mx4.pub.mailpod10-cph3.one.com.

concern.dk shares mail servers — at least in part — with other domains, including fotografik.dk, kap.dk, teaminternet.dk and two others.

mx1.pub.mailpod10-cph3.one.com, mx2.pub.mailpod10-cph3.one.com, mx3.pub.mailpod10-cph3.one.com and mx4.pub.mailpod10-cph3.one.com each resolve to one IP address: mx1.pub.mailpod10-cph3.one.com resolves to 104.37.34.70, mx2.pub.mailpod10-cph3.one.com resolves to 104.37.34.71, mx3.pub.mailpod10-cph3.one.com resolves to 104.37.34.72 and mx4.pub.mailpod10-cph3.one.com resolves to 104.37.34.73.