retsf.dk - dns.ninja

`retsf.dk`

DNSSEC	🔒 Signed (DS record present)
A	93.191.156.121^{🇩🇰 team-blue-denmark93.191.152.0/21 ZITCOM A/S}
		PTR	`linux240.unoeuro.com`
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	`mx.simply.com` ⭐
		A	94.231.106.20^{🇩🇰 team-blue-denmark94.231.96.0/20 ZITCOM A/S}
			PTR	`mx.simply.com`
TXT	`v=spf1 include:spf.simply.com ?all`
SOA	`ns1.simply.com`hostmaster@simply.com 2025-04-23 #0

`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 1786772880localtime Sat Aug 15 07:48:00 2026gmtime Sat Au...`
	SOA	`b.nic.dk`tech@punktum.dk serial=1786772880

Same first word

retsf.dk

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frest.nl

terfs.org

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ferst.com.br

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tefsr.info

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ferst.com.au

DNS History

11 records (6 active, 5 former)

●NSns1.simply.com2026-02-22 → 2026-08-15 · 3 obs

○ 2017-05-17 20:58:58
● 2026-02-22 02:25:24
● 2026-08-15 05:50:16

○NSns1.surf-town.net2015-07-24 → 2017-05-17 · 4 obs

● 2015-07-24 00:14:22
● 2017-05-17 20:58:58
○ 2026-02-22 02:25:24
○ 2026-08-15 05:50:16

●NSns2.simply.com2026-02-22 → 2026-08-15 · 3 obs

○ 2017-05-17 20:58:58
● 2026-02-22 02:25:24
● 2026-08-15 05:50:16

○NSns2.surf-town.net2015-07-24 → 2017-05-17 · 4 obs

● 2015-07-24 00:14:22
● 2017-05-17 20:58:58
○ 2026-02-22 02:25:24
○ 2026-08-15 05:50:16

●NSns3.simply.com2026-02-22 → 2026-08-15 · 3 obs

○ 2017-05-17 20:58:58
● 2026-02-22 02:25:24
● 2026-08-15 05:50:16

○NSns3.surf-town.net2015-07-24 → 2017-05-17 · 4 obs

● 2015-07-24 00:14:22
● 2017-05-17 20:58:58
○ 2026-02-22 02:25:24
○ 2026-08-15 05:50:16

●NSns4.simply.com2026-02-22 → 2026-08-15 · 3 obs

○ 2017-05-17 20:58:58
● 2026-02-22 02:25:24
● 2026-08-15 05:50:16

○MXmail4.surftown.dk2015-07-24 → 2017-05-17 · 4 obs

● 2015-07-24 00:14:22
● 2017-05-17 20:58:58
○ 2026-02-22 02:25:24
○ 2026-08-15 05:50:16

●MXmx.simply.com2026-02-22 → 2026-08-15 · 3 obs

○ 2017-05-17 20:58:58
● 2026-02-22 02:25:24
● 2026-08-15 05:50:16

○A212.97.132.1652015-07-24 → 2017-05-17 · 4 obs

● 2015-07-24 00:14:22
● 2017-05-17 20:58:58
○ 2026-02-22 02:25:24
○ 2026-08-15 05:50:16

●A93.191.156.1212026-02-22 → 2026-08-15 · 3 obs

○ 2017-05-17 20:58:58
● 2026-02-22 02:25:24
● 2026-08-15 05:50:16

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:91.197.248.78

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

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 2014ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`93.191.156.121`
NS	4	`ns3.simply.com, ns4.simply.com...`
MX	1	`mx.simply.com (pri: 10)`
TXT	1	`v=spf1 include:spf.simply.com ?all`
SOA	1	`ns1.simply.com hostmaster.simply.com`

Analysis

IP Addresses

retsf.dk directs to one IP number, which is 93.191.156.121.

Among the host names that share IP numbers with retsf.dk are johannesson.dk, wirelesslogicnordic.com, alfr.dk and two others.

Name Servers

The domain retsf.dk is delegated to these four name servers: ns1.simply.com, ns2.simply.com, ns3.simply.com and ns4.simply.com.

retsf.dk shares at least some of its name servers with other domains, including liederbrau.de, ventbutiken.com, wiya.dk and two others.

These name servers are frequently seen alongside the name servers ns3.unoeuro.com, ns1.unoeuro.com, ns2.unoeuro.com and ns4.unoeuro.com.

Hosts with two IP numbers each:

ns1.simply.com resolves to 91.197.248.78 and 2a02:2339:1:15c::4562:4562.

ns2.simply.com resolves to 185.25.141.15 and 2a02:2339:4006:101::4562:4562.

Hosts that resolve to one IP address:

ns3.simply.com resolves to 91.197.248.79.

ns4.simply.com resolves to 91.197.248.80.

Mail Servers

retsf.dk routes its mail through a single mail server, mx.simply.com.

retsf.dk has the same mail server arrangement as a number of other domains, for example noerup.com, martinsimonsen.dk, aodata.dk and two more.

mx.simply.com points to one IP number — 94.231.106.20.