onback.dk - dns.ninja

`onback.dk`

DNSSEC	🔒 Signed (DS record present)
NS	`ns1.simply.com` ⭐
		A	2a02:2339:1:15c::4562:4562^{🇩🇰 team-blue-denmark2a02:2339::/36}
			PTR	`ns1.simply.com`
		A	91.197.248.78^{🇩🇰 team-blue-denmark91.197.248.0/22}
			PTR	`ns1.simply.com`
NS	`ns2.simply.com`
		A	2a02:2339:4006:101::4562:4562^{🇩🇰 team-blue-denmark2a02:2339:4000::/34}
			PTR	`ns2.simply.com`
		A	185.25.141.15^{🇩🇰 team-blue-denmark185.25.141.0/24 Zitcom A/S}
			PTR	`ns2.simply.com`
NS	`ns3.simply.com`
		A	91.197.248.79^{🇩🇰 team-blue-denmark91.197.248.0/22}
			PTR	`ns3.simply.com`
NS	`ns4.simply.com`
		A	91.197.248.80^{🇩🇰 team-blue-denmark91.197.248.0/22}
			PTR	`ns4.simply.com`
MX	`onback-dk.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db3pr0202cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::4^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db4pr02cu00204.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::9^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as8pr04cu00801.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::f^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am7pr05cu00307.inbound.protection.outlook.com`
		A	52.101.68.0^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db3pr0202cu00100.inbound.protection.outlook.com`
		A	52.101.68.25^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db8pr02cu00101.inbound.protection.outlook.com`
		A	52.101.73.2^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as9pr07cu00302.inbound.protection.outlook.com`
		A	52.101.73.19^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as8pr04cu00803.inbound.protection.outlook.com`
TXT	`v=spf1 include:spf.protection.outlook.com include:spf.simply.com -all`
TXT	`MS=ms58318355`
SOA	`ns1.simply.com`hostmaster@simply.com 2024-04-23 #3

`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 1782387901localtime Thu Jun 25 13:45:01 2026gmtime Thu Ju...`
	SOA	`b.nic.dk`tech@punktum.dk serial=1782387901

Same first word

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DNS History

11 records (5 active, 6 former)

○NSns.talkactive.net2015-05-20 → 2017-06-14 · 4 obs

● 2015-05-20 11:01:24
● 2017-06-14 18:47:26
○ 2026-02-25 14:51:18
○ 2026-06-25 12:02:30

●NSns1.simply.com2026-02-25 → 2026-06-25 · 3 obs

○ 2017-06-14 18:47:26
● 2026-02-25 14:51:18
● 2026-06-25 12:02:30

●NSns2.simply.com2026-02-25 → 2026-06-25 · 3 obs

○ 2017-06-14 18:47:26
● 2026-02-25 14:51:18
● 2026-06-25 12:02:30

○NSns2.talkactive.net2015-05-20 → 2017-06-14 · 4 obs

● 2015-05-20 11:01:24
● 2017-06-14 18:47:26
○ 2026-02-25 14:51:18
○ 2026-06-25 12:02:30

●NSns3.simply.com2026-02-25 → 2026-06-25 · 3 obs

○ 2017-06-14 18:47:26
● 2026-02-25 14:51:18
● 2026-06-25 12:02:30

○NSns3.talkactive.net2015-05-20 → 2017-06-14 · 4 obs

● 2015-05-20 11:01:24
● 2017-06-14 18:47:26
○ 2026-02-25 14:51:18
○ 2026-06-25 12:02:30

●NSns4.simply.com2026-02-25 → 2026-06-25 · 3 obs

○ 2017-06-14 18:47:26
● 2026-02-25 14:51:18
● 2026-06-25 12:02:30

○MXmail.onback.dk2015-05-20 → 2017-06-14 · 4 obs

● 2015-05-20 11:01:24
● 2017-06-14 18:47:26
○ 2026-02-25 14:51:18
○ 2026-06-25 12:02:30

○MXmgw.onback.dk2015-05-20 → 2017-06-14 · 4 obs

● 2015-05-20 11:01:24
● 2017-06-14 18:47:26
○ 2026-02-25 14:51:18
○ 2026-06-25 12:02:30

●MXonback-dk.mail.protection.outlook.com2026-02-25 → 2026-06-25 · 3 obs

○ 2017-06-14 18:47:26
● 2026-02-25 14:51:18
● 2026-06-25 12:02:30

○A95.154.57.1402015-05-20 → 2017-06-14 · 4 obs

● 2015-05-20 11:01:24
● 2017-06-14 18:47:26
○ 2026-02-25 14:51:18
○ 2026-06-25 12:02:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dk	b.nic.dk, h.nic.dk, t.nic.dk, c.nic.dk...	-
onback.dk	ns2.simply.com, ns1.simply.com, ns4.simply.com, ns3.simply.com	-

✅ Authoritative Response

Server:91.197.248.78

NS records: ns2.simply.com, ns1.simply.com, ns4.simply.com, ns3.simply.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1940ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`ns4.simply.com, ns1.simply.com...`
MX	1	`onback-dk.mail.protection.outlook.com (p`
TXT	2	`MS=ms58318355, v=spf1 include:spf.protection.outlook.co`
SOA	1	`ns1.simply.com hostmaster.simply.com`

Analysis

Name Servers

The NS records for onback.dk point to four name servers: ns1.simply.com, ns2.simply.com, ns3.simply.com and ns4.simply.com.

onback.dk has at least partial name server overlap with other domains, such as hillerod.net, hk71.se, netbot.dk and two others.

Host names that have two IP addresses:

The A records for ns1.simply.com return 91.197.248.78 and 2a02:2339:1:15c::4562:4562.

The A records for ns2.simply.com return 185.25.141.15 and 2a02:2339:4006:101::4562:4562.

Host names that point to one IP address:

ns3.simply.com resolves to the IP address 91.197.248.79.

ns4.simply.com resolves to the IP address 91.197.248.80.

Mail Servers

The sole mail server for onback.dk is onback-dk.mail.protection.outlook.com.

With 8 IP addresses total, onback-dk.mail.protection.outlook.com resolves to 52.101.68.0, 52.101.68.25, 52.101.73.2 and 5 others.