`3rcenter.dk`

DNSSEC	⚠️ Not signed
A	178.72.21.198^{🇩🇰 Cibicom-IP-Network178.72.16.0/21 Cibicom A/S}
		PTR	`3rcenter.t3hot.dk`
NS	`ns6.sitnet.dk` ⭐
		A	2604:e180:1071::3:1^{🇺🇸 DEFENSENET-12604:e180::/32 F5, Inc. 801 5th Ave Seattle WA 98104 United States}
		A	107.162.234.197^{🇺🇸 DEFENSENET-1107.162.234.0/24 F5 via EMIX}
NS	`ns7.sitnet.dk`
		A	2604:e180:1071::ffff:6ba2:b0dd^{🇺🇸 DEFENSENET-12604:e180::/32 F5, Inc. 801 5th Ave Seattle WA 98104 United States}
		A	107.162.176.221^{🇺🇸 DEFENSENET-1107.162.176.0/24 F5 via EMIX}
MX	`mx01.statens-it.dk` ⭐
		A	194.182.109.217^{🇩🇰 STATENSIT194.182.109.0/24}
			PTR	`mx01.statens-it.dk`
MX	`mx02.statens-it.dk` ⭐
		A	194.182.109.218^{🇩🇰 STATENSIT194.182.109.0/24}
			PTR	`mx02.statens-it.dk`
MX	`mx03.statens-it.dk` ⭐
		A	194.182.109.219^{🇩🇰 STATENSIT194.182.109.0/24}
			PTR	`mx03.statens-it.dk`
MX	`mx04.statens-it.dk` ⭐
		A	194.182.109.220^{🇩🇰 STATENSIT194.182.109.0/24}
			PTR	`mx04.statens-it.dk`
MX	`mx05.statens-it.dk` ⭐
		A	194.182.109.221^{🇩🇰 STATENSIT194.182.109.0/24}
			PTR	`mx05.statens-it.dk`
MX	`mx06.statens-it.dk` ⭐
		A	194.182.109.222^{🇩🇰 STATENSIT194.182.109.0/24}
			PTR	`mx06.statens-it.dk`
MX	`mx07.statens-it.dk` ⭐
		A	194.182.109.223^{🇩🇰 STATENSIT194.182.109.0/24}
			PTR	`mx07.statens-it.dk`
MX	`mx08.statens-it.dk` ⭐
		A	194.182.109.224^{🇩🇰 STATENSIT194.182.109.0/24}
			PTR	`mx08.statens-it.dk`
TXT	`v=spf1 ip4:194.182.109.192/26 ip4:188.64.157.0/28 ip4:77.66.10.196 ip4:178.72...`
TXT	`MS=ms17076358`
TXT	`I2As3ozvbNwPv3jFspARXy2bWXqyuMiEZePQ8VjAICeDJzNuLDJfwuWfYoOQQwas5AN0idkHRRt1c...`
SOA	`ns6.sitnet.dk`hostmaster@statens-it.dk serial=16030

`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 1775962260localtime Sun Apr 12 04:51:00 2026gmtime Sun Ap...`
	SOA	`b.nic.dk`tech@punktum.dk serial=1775962260

Same first word

3rcenter.dk

Similar names

terr3nce.com

DNS History

16 records (11 active, 5 former)

○NSns.dandomain.dk2018-05-10 → 2018-05-10 · 3 obs

● 2018-05-10 06:59:38
○ 2026-03-28 15:17:24
○ 2026-04-12 03:17:52

○NSns2.dandomain.dk2018-05-10 → 2018-05-10 · 3 obs

● 2018-05-10 06:59:38
○ 2026-03-28 15:17:24
○ 2026-04-12 03:17:52

○NSns3.dandomain.dk2018-05-10 → 2018-05-10 · 3 obs

● 2018-05-10 06:59:38
○ 2026-03-28 15:17:24
○ 2026-04-12 03:17:52

●NSns6.sitnet.dk2026-03-28 → 2026-04-12 · 3 obs

○ 2018-05-10 06:59:38
● 2026-03-28 15:17:24
● 2026-04-12 03:17:52

●NSns7.sitnet.dk2026-03-28 → 2026-04-12 · 3 obs

○ 2018-05-10 06:59:38
● 2026-03-28 15:17:24
● 2026-04-12 03:17:52

○MX3rcenter-dk.mail.protection.outlook.com2018-05-10 → 2018-05-10 · 3 obs

● 2018-05-10 06:59:38
○ 2026-03-28 15:17:24
○ 2026-04-12 03:17:52

●MXmx01.statens-it.dk2026-03-28 → 2026-04-12 · 3 obs

○ 2018-05-10 06:59:38
● 2026-03-28 15:17:24
● 2026-04-12 03:17:52

●MXmx02.statens-it.dk2026-03-28 → 2026-04-12 · 3 obs

○ 2018-05-10 06:59:38
● 2026-03-28 15:17:24
● 2026-04-12 03:17:52

●MXmx03.statens-it.dk2026-03-28 → 2026-04-12 · 3 obs

○ 2018-05-10 06:59:38
● 2026-03-28 15:17:24
● 2026-04-12 03:17:52

●MXmx04.statens-it.dk2026-03-28 → 2026-04-12 · 3 obs

○ 2018-05-10 06:59:38
● 2026-03-28 15:17:24
● 2026-04-12 03:17:52

●MXmx05.statens-it.dk2026-03-28 → 2026-04-12 · 3 obs

○ 2018-05-10 06:59:38
● 2026-03-28 15:17:24
● 2026-04-12 03:17:52

●MXmx06.statens-it.dk2026-03-28 → 2026-04-12 · 3 obs

○ 2018-05-10 06:59:38
● 2026-03-28 15:17:24
● 2026-04-12 03:17:52

●MXmx07.statens-it.dk2026-03-28 → 2026-04-12 · 3 obs

○ 2018-05-10 06:59:38
● 2026-03-28 15:17:24
● 2026-04-12 03:17:52

●MXmx08.statens-it.dk2026-03-28 → 2026-04-12 · 3 obs

○ 2018-05-10 06:59:38
● 2026-03-28 15:17:24
● 2026-04-12 03:17:52

●A178.72.21.1982026-03-28 → 2026-04-12 · 3 obs

○ 2018-05-10 06:59:38
● 2026-03-28 15:17:24
● 2026-04-12 03:17:52

○A77.66.9.2062018-05-10 → 2018-05-10 · 3 obs

● 2018-05-10 06:59:38
○ 2026-03-28 15:17:24
○ 2026-04-12 03:17:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dk	s.nic.dk, h.nic.dk, b.nic.dk, c.nic.dk...	-
3rcenter.dk	ns6.sitnet.dk, ns7.sitnet.dk	4 records

✅ Authoritative Response

Server:107.162.234.197

NS records: ns6.sitnet.dk, ns7.sitnet.dk

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 214ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`178.72.21.198`
NS	2	`ns6.sitnet.dk, ns7.sitnet.dk`
MX	8	`mx08.statens-it.dk (pri: 10), mx05.statens-it.dk (pri: 10)...`
TXT	3	`I2As3ozvbNwPv3jFspARXy2bWXqyuMiEZePQ8VjA, v=spf1 ip4:194.182.109.192/26 ip4:188.64...`
SOA	1	`ns6.sitnet.dk hostmaster.statens-it.dk`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns6.sitnet.dk, ns6.sitnet.dk, ns7.sitnet.dk...)

Analysis

IP Addresses

3rcenter.dk points to a single IP: 178.72.21.198.

Other host names, such as 3rcenter.t3hot.dk, share IP numbers with 3rcenter.dk.

Name Servers

Two name servers ns6.sitnet.dk and ns7.sitnet.dk handle delegation for 3rcenter.dk.

3rcenter.dk uses the same name server setup as other domains, for example vtu.dk, personalestyrelsen.dk, fleksbarsel.dk, ankestyrelsen.dk and regering.dk.

3rcenter.dk shares name servers with other domains at least partially, for instance cfp-research.com, fritvalgsdatabase.dk and fritvalgsdatabasen.dk.

these name servers are commonly used with the name servers sit-dhcp001.prod.sitad.dk.

Host names with two IP numbers:

ns6.sitnet.dk points to: 2604:e180:1071::3:1 and 107.162.234.197

ns7.sitnet.dk points to: 2604:e180:1071::ffff:6ba2:b0dd and 107.162.176.221