`concentric.dk`

DNSSEC	⚠️ Not signed
A	46.183.138.100^{🇩🇰 SENTIA46.183.138.0/24}
NS	`ns1.gigahost.dk` ⭐
		A	46.183.139.31^{🇩🇰 SENTIA46.183.139.0/24}
NS	`ns2.gigahost.dk`
		A	46.183.139.222^{🇩🇰 SENTIA46.183.139.0/24}
			PTR	`web22.gigahost.dk`
NS	`ns3.gigahost.dk`
		A	71.19.249.71^{🇨🇦 ESECUREDATACOM-171.19.249.0/24 eSecureData.com Inc.}
			PTR	`ns3.gigahost.dk`
NS	`ns4.gigahost.dk`
		A	51.79.215.130^{🇸🇬 OVH51.79.128.0/17 Hosting route}
			PTR	`ns4.gigahost.dk`
NS	`ns5.gigahost.dk`
		A	77.74.192.83^{🇬🇧 UKSERVERS-AS77.74.192.0/21 UK Dedicated Servers Limited}
			PTR	`ns5.gigahost.dk`
MX	`mx1.gigahost.dk` ⭐
		A	46.183.139.11^{🇩🇰 SENTIA46.183.139.0/24}
			PTR	`mx1.gigahost.dk`
MX	`mx2.gigahost.dk` ⭐
		A	46.183.139.12^{🇩🇰 SENTIA46.183.139.0/24}
			PTR	`mx2.gigahost.dk`
MX	`mx3.gigahost.dk` ⭐
		A	46.183.139.13^{🇩🇰 SENTIA46.183.139.0/24}
			PTR	`mx3.gigahost.dk`
TXT	`spf2.0/pra`
TXT	`v=spf1 mx include:spf.gigahost.dk -all`
SOA	`ns1.gigahost.dk`hostmaster@concentric.dk 2026-03-26 #1

`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 1774773361localtime Sun Mar 29 10:36:01 2026gmtime Sun Ma...`
	SOA	`b.nic.dk`tech@punktum.dk serial=1774773181

WOT: SAFE (68/100)

Subdomains

riff.concentric.dk

Same first word

Similar names

centriccon.com

connectric.com

circonnect.com

ictconcern.com

rciconnect.pt

concnetric.net

DNS History

23 records (9 active, 14 former)

●NSns1.gigahost.dk2026-03-26 → 2026-03-29 · 3 obs

○ 2018-12-18 01:55:24
● 2026-03-26 08:35:16
● 2026-03-29 09:05:06

○NSns1.gratisdns.dk2015-05-25 → 2018-12-18 · 4 obs

● 2015-05-25 22:20:46
● 2018-12-18 01:55:24
○ 2026-03-26 08:35:16
○ 2026-03-29 09:05:06

●NSns2.gigahost.dk2026-03-26 → 2026-03-29 · 3 obs

○ 2018-12-18 01:55:24
● 2026-03-26 08:35:16
● 2026-03-29 09:05:06

○NSns2.gratisdns.dk2015-05-25 → 2018-12-18 · 4 obs

● 2015-05-25 22:20:46
● 2018-12-18 01:55:24
○ 2026-03-26 08:35:16
○ 2026-03-29 09:05:06

●NSns3.gigahost.dk2026-03-26 → 2026-03-29 · 3 obs

○ 2018-12-18 01:55:24
● 2026-03-26 08:35:16
● 2026-03-29 09:05:06

○NSns3.gratisdns.dk2015-05-25 → 2018-12-18 · 4 obs

● 2015-05-25 22:20:46
● 2018-12-18 01:55:24
○ 2026-03-26 08:35:16
○ 2026-03-29 09:05:06

●NSns4.gigahost.dk2026-03-26 → 2026-03-29 · 3 obs

○ 2018-12-18 01:55:24
● 2026-03-26 08:35:16
● 2026-03-29 09:05:06

○NSns4.gratisdns.dk2015-05-25 → 2018-12-18 · 4 obs

● 2015-05-25 22:20:46
● 2018-12-18 01:55:24
○ 2026-03-26 08:35:16
○ 2026-03-29 09:05:06

●NSns5.gigahost.dk2026-03-26 → 2026-03-29 · 3 obs

○ 2018-12-18 01:55:24
● 2026-03-26 08:35:16
● 2026-03-29 09:05:06

○NSns5.gratisdns.dk2015-05-25 → 2018-12-18 · 4 obs

● 2015-05-25 22:20:46
● 2018-12-18 01:55:24
○ 2026-03-26 08:35:16
○ 2026-03-29 09:05:06

○MXalt1.aspmx.l.google.com2015-05-25 → 2018-12-18 · 4 obs

● 2015-05-25 22:20:46
● 2018-12-18 01:55:24
○ 2026-03-26 08:35:16
○ 2026-03-29 09:05:06

○MXalt2.aspmx.l.google.com2015-05-25 → 2018-12-18 · 4 obs

● 2015-05-25 22:20:46
● 2018-12-18 01:55:24
○ 2026-03-26 08:35:16
○ 2026-03-29 09:05:06

○MXaspmx.l.google.com2015-05-25 → 2018-12-18 · 4 obs

● 2015-05-25 22:20:46
● 2018-12-18 01:55:24
○ 2026-03-26 08:35:16
○ 2026-03-29 09:05:06

○MXaspmx2.googlemail.com2015-05-25 → 2018-12-18 · 4 obs

● 2015-05-25 22:20:46
● 2018-12-18 01:55:24
○ 2026-03-26 08:35:16
○ 2026-03-29 09:05:06

○MXaspmx3.googlemail.com2015-05-25 → 2018-12-18 · 4 obs

● 2015-05-25 22:20:46
● 2018-12-18 01:55:24
○ 2026-03-26 08:35:16
○ 2026-03-29 09:05:06

○MXaspmx4.googlemail.com2015-05-25 → 2018-12-18 · 4 obs

● 2015-05-25 22:20:46
● 2018-12-18 01:55:24
○ 2026-03-26 08:35:16
○ 2026-03-29 09:05:06

○MXaspmx5.googlemail.com2015-05-25 → 2018-12-18 · 4 obs

● 2015-05-25 22:20:46
● 2018-12-18 01:55:24
○ 2026-03-26 08:35:16
○ 2026-03-29 09:05:06

●MXmx1.gigahost.dk2026-03-26 → 2026-03-29 · 3 obs

○ 2018-12-18 01:55:24
● 2026-03-26 08:35:16
● 2026-03-29 09:05:06

●MXmx2.gigahost.dk2026-03-26 → 2026-03-29 · 3 obs

○ 2018-12-18 01:55:24
● 2026-03-26 08:35:16
● 2026-03-29 09:05:06

●MXmx3.gigahost.dk2026-03-26 → 2026-03-29 · 3 obs

○ 2018-12-18 01:55:24
● 2026-03-26 08:35:16
● 2026-03-29 09:05:06

○A2001:67c:3c0:12::532015-05-25 → 2018-12-18 · 4 obs

● 2015-05-25 22:20:46
● 2018-12-18 01:55:24
○ 2026-03-26 08:35:16
○ 2026-03-29 09:05:06

●A46.183.138.1002026-03-26 → 2026-03-29 · 3 obs

○ 2018-12-18 01:55:24
● 2026-03-26 08:35:16
● 2026-03-29 09:05:06

○A91.221.196.2532015-05-25 → 2018-12-18 · 4 obs

● 2015-05-25 22:20:46
● 2018-12-18 01:55:24
○ 2026-03-26 08:35:16
○ 2026-03-29 09:05:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dk	b.nic.dk, h.nic.dk, t.nic.dk, c.nic.dk...	12 records
concentric.dk	ns1.gigahost.dk, ns5.gigahost.dk, ns3.gigahost.dk, ns2.gigahost.dk...	5 records

✅ Authoritative Response

Server:51.79.215.130

NS records: ns1.gigahost.dk, ns5.gigahost.dk, ns3.gigahost.dk, ns2.gigahost.dk, ns4.gigahost.dk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for concentric.dk (unsigned zone)

⏱️ Timing

Total: 1070ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`46.183.138.100`
NS	5	`ns3.gigahost.dk, ns5.gigahost.dk...`
MX	3	`mx3.gigahost.dk (pri: 10), mx1.gigahost.dk (pri: 10)...`
TXT	2	`spf2.0/pra, v=spf1 mx include:spf.gigahost.dk -all`
SOA	1	`ns1.gigahost.dk hostmaster.concentric.dk`

📌 Glue Records Collected

Total: 17

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

Out-of-bailiwick: 5 (ns5.gigahost.dk, ns4.gigahost.dk, ns3.gigahost.dk...)

Analysis

Hierarchy

concentric.dk is parent of riff.concentric.dk.

IP Addresses

concentric.dk points to a single IP: 46.183.138.100.

Other host names, for instance jbruun.net, cementbh.com, fodboldlogen.dk, perle45.dk and designinsite.dk share IP numbers with concentric.dk.

Name Servers

concentric.dk is delegated to five name servers: ns1.gigahost.dk, ns2.gigahost.dk, ns3.gigahost.dk, ns4.gigahost.dk and ns5.gigahost.dk.

concentric.dk at least partially shares its name servers with other domains, for instance dalmark.dk, solrodgolf.dk, cmg.dk, babyhouse.dk and playlight.dk.

Host names with one IP number:

ns1.gigahost.dk points to 46.183.139.31; ns2.gigahost.dk points to 46.183.139.222; ns3.gigahost.dk points to 71.19.249.71; ns4.gigahost.dk points to 51.79.215.130; ns5.gigahost.dk points to 77.74.192.83.

Mail Servers

concentric.dk is handled by three mail servers: mx1.gigahost.dk, mx2.gigahost.dk and mx3.gigahost.dk.

concentric.dk shares some mail servers with other domains, including ettena.dk, thefield.dk, family-fitness.dk, dinmekaniker.net and mygis.dk.

Host names with one IP number:

mx1.gigahost.dk points to: 46.183.139.11.

mx2.gigahost.dk points to: 46.183.139.12.

mx3.gigahost.dk points to: 46.183.139.13.

concentric.dk - robtex.com

concentric.dk

dk

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`concentric.dk`

`dk`