`con21.dk`

DNSSEC	⚠️ Not signed
A	195.242.130.99^{🇩🇰 obox-networks195.242.130.0/23 e-studio.dk +-------------------------------+ For abuse and security issues please contact abuse@bitguardians.com +-------------------------------+}
		PTR	`web2.atznet.dk`
NS	`ns1.atznet.dk` ⭐
		A	2001:67c:564:fffb::ffff^{🇩🇰 obox-networks2001:67c:564::/48 Sjacob Holding ApS}
		A	195.242.130.110^{🇩🇰 obox-networks195.242.130.0/23 e-studio.dk +-------------------------------+ For abuse and security issues please contact abuse@bitguardians.com +-------------------------------+}
			PTR	`ns1.atznet.dk`
NS	`ns2.atznet.dk`
		A	2a00:1b18:2:3:2::2^{🇩🇰 DLX-AS2a00:1b18::/29}
			PTR	`ns2.atznet.dk`
		A	62.69.152.36^{🇩🇰 DLX-AS62.69.152.0/21 DLX}
MX	`mx4.spamfri.dk` ⭐
		A	2001:67c:564:fffd::4001^{🇩🇰 obox-networks2001:67c:564::/48 Sjacob Holding ApS}
			PTR	`mx4.spamfri.dk`
		A	193.200.91.108^{🇩🇰 obox-networks193.200.90.0/23 Eushells.com +-------------------------------+ For abuse and security issues please contact abuse@bitguardians.com +-------------------------------+}
			PTR	`mx4.spamfri.dk`
MX	`mx2.spamfri.dk`⁽²⁰⁾
		A	2001:67c:564:fffd::2001^{🇩🇰 obox-networks2001:67c:564::/48 Sjacob Holding ApS}
			PTR	`mx2.spamfri.dk`
		A	193.200.91.109^{🇩🇰 obox-networks193.200.90.0/23 Eushells.com +-------------------------------+ For abuse and security issues please contact abuse@bitguardians.com +-------------------------------+}
			PTR	`mx2.spamfri.dk`
MX	`mx3.spamfri.dk`⁽³⁰⁾
		A	2a00:1b18:2:3:fe::2^{🇩🇰 DLX-AS2a00:1b18::/29}
			PTR	`mx3.spamfri.dk`
		A	62.69.152.43^{🇩🇰 DLX-AS62.69.152.0/21 DLX}
TXT	`v=spf1 include:_spf.atznet.dk -all`
SOA	`ns1.atznet.dk`hostmaster@atznet.dk 2025-03-14 #2

`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 1774173241localtime Sun Mar 22 10:54:01 2026gmtime Sun Ma...`
	SOA	`b.nic.dk`tech@punktum.dk serial=1774173241

Same first word

con21.de

con21.dk

Similar names

2con1.com

noc12.com

DNS History

13 records (6 active, 7 former)

○NSns1.abusiness.dk2015-07-25 → 2017-02-16 · 4 obs

● 2015-07-25 20:55:02
● 2017-02-16 17:05:32
○ 2026-03-05 19:45:14
○ 2026-03-23 11:55:28

●NSns1.atznet.dk2026-03-05 → 2026-03-23 · 3 obs

○ 2017-02-16 17:05:32
● 2026-03-05 19:45:14
● 2026-03-23 11:55:28

○NSns2.abusiness.dk2015-07-25 → 2017-02-16 · 4 obs

● 2015-07-25 20:55:02
● 2017-02-16 17:05:32
○ 2026-03-05 19:45:14
○ 2026-03-23 11:55:28

●NSns2.atznet.dk2026-03-05 → 2026-03-23 · 3 obs

○ 2017-02-16 17:05:32
● 2026-03-05 19:45:14
● 2026-03-23 11:55:28

○NSns3.abusiness.dk2015-07-25 → 2017-02-16 · 4 obs

● 2015-07-25 20:55:02
● 2017-02-16 17:05:32
○ 2026-03-05 19:45:14
○ 2026-03-23 11:55:28

○MXabizmail1.abusiness.dk2015-07-25 → 2017-02-16 · 4 obs

● 2015-07-25 20:55:02
● 2017-02-16 17:05:32
○ 2026-03-05 19:45:14
○ 2026-03-23 11:55:28

●MXmx2.spamfri.dk2026-03-05 → 2026-03-23 · 3 obs

○ 2017-02-16 17:05:32
● 2026-03-05 19:45:14
● 2026-03-23 11:55:28

●MXmx3.spamfri.dk2026-03-05 → 2026-03-23 · 3 obs

○ 2017-02-16 17:05:32
● 2026-03-05 19:45:14
● 2026-03-23 11:55:28

●MXmx4.spamfri.dk2026-03-05 → 2026-03-23 · 3 obs

○ 2017-02-16 17:05:32
● 2026-03-05 19:45:14
● 2026-03-23 11:55:28

○MXmxbackup1.abusiness.dk2015-07-25 → 2017-02-16 · 4 obs

● 2015-07-25 20:55:02
● 2017-02-16 17:05:32
○ 2026-03-05 19:45:14
○ 2026-03-23 11:55:28

○A185.93.195.1162016-02-23 → 2017-02-16 · 5 obs

○ 2015-11-25 15:16:20
● 2016-02-23 18:52:22
● 2017-02-16 17:05:32
○ 2026-03-05 19:45:14
○ 2026-03-23 11:55:28

●A195.242.130.992026-03-05 → 2026-03-23 · 3 obs

○ 2017-02-16 17:05:32
● 2026-03-05 19:45:14
● 2026-03-23 11:55:28

○A195.242.131.2332015-07-25 → 2015-11-25 · 4 obs

● 2015-07-25 20:55:02
● 2015-11-25 15:16:20
○ 2016-02-23 18:52:22
○ 2026-03-23 11:55:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dk	b.nic.dk, h.nic.dk, t.nic.dk, c.nic.dk...	-
con21.dk	ns1.atznet.dk, ns2.atznet.dk	4 records

✅ Authoritative Response

Server:195.242.130.110

NS records: ns1.atznet.dk, ns2.atznet.dk

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 756ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`195.242.130.99`
NS	2	`ns1.atznet.dk, ns2.atznet.dk`
MX	3	`mx3.spamfri.dk (pri: 30), mx4.spamfri.dk (pri: 10)...`
TXT	1	`v=spf1 include:_spf.atznet.dk -all`
SOA	1	`ns1.atznet.dk hostmaster.atznet.dk`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.atznet.dk, ns1.atznet.dk, ns2.atznet.dk...)

Analysis

IP Addresses

con21.dk points to IP number: 195.242.130.99.

Other host names such as host1.dk, hvitfeldt.dk, www.kjaersbeslagsmedie.dk, timken.dk and goldt.dk share IPs with con21.dk.

Name Servers

con21.dk is delegated to two name servers: ns1.atznet.dk and ns2.atznet.dk.

con21.dk shares the same name server setup as bbmail.dk, elrank.dk, skanderborgkulturskole.dk, annequilt.dk and pfconsult.dk.

con21.dk at least partially shares name servers with other domains, for instance thygesen.com, jakobi.dk, danish-poly-cut.dk, timken.dk and soficon.com.

Host names with two IP numbers: ns1.atznet.dk points to: 2001:67c:564:fffb::ffff and 195.242.130.110; ns2.atznet.dk points to: 2a00:1b18:2:3:2::2 and 62.69.152.36.

Mail Servers

Three mail servers handle con21.dk: mx2.spamfri.dk, mx3.spamfri.dk and mx4.spamfri.dk.

con21.dk shares at least partially some mail servers with other domains, including soar.dk, 5000.dk, durmol.dk, gribb.dk and morenet.dk.

these mail servers are commonly used together with mx1.spamfri.dk.

Host mx2.spamfri.dk points to 2001:67c:564:fffd::2001 and 193.200.91.109; Host mx3.spamfri.dk points to 2a00:1b18:2:3:fe::2 and 62.69.152.43; Host mx4.spamfri.dk points to 2001:67c:564:fffd::4001 and 193.200.91.108.

con21.dk - robtex.com

con21.dk

dk

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`con21.dk`

`dk`