knowhow.dk - dns.ninja

`knowhow.dk`

DNSSEC	🔒 Signed (DS record present)
A	94.231.103.142^{🇩🇰 team-blue-denmark94.231.96.0/20 ZITCOM A/S}
		PTR	`linux130.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:sendgrid.net ~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 1786077360localtime Fri Aug 7 06:36:00 2026gmtime Fri Au...`
	SOA	`b.nic.dk`tech@punktum.dk serial=1786077360

Previously MX for

knowhow.dk

Subdomains

dina.knowhow.dk

zh.knowhow.dk

mail.knowhow.dk

ally.knowhow.dk

cher.knowhow.dk

sara.knowhow.dk

joan.knowhow.dk

lulle.knowhow.dk

Same first word

knowhow.ch

knowhow.co

knowhow.cn

knowhow.fr

knowhow.me

knowhow.it

knowhow.es

knowhow.is

knowhow.si

knowhow.cl

knowhow.se

knowhow.ceo

knowhow.sk

knowhow.com.py

knowhow.ee

knowhow.agency

knowhow.gr

knowhow.ru

knowhow.com.au

knowhow.training

knowhow.cc

knowhow.at

knowhow.pt

knowhow.ca

knowhow.de

knowhow.insure

knowhow.bg

knowhow.world

knowhow.vn

knowhow.systems

knowhow.tips

knowhow.center

knowhow.dk

knowhow.ir

knowhow.to

knowhow.com.uy

knowhow.com.gr

knowhow.promo

knowhow.be

knowhow.ro

knowhow.biz

knowhow.or.kr

knowhow.com.ar

knowhow.com

knowhow.tv

knowhow.ws

knowhow.lt

knowhow.com.pl

knowhow.waw.pl

knowhow.hu

knowhow.net

knowhow.hk

knowhow.fi

knowhow.com.ng

knowhow.nu

Similar names

DNS History

12 records (6 active, 6 former)

○NSgw1032015-06-01 → 2017-01-25 · 4 obs

● 2015-06-01 01:30:52
● 2017-01-25 17:17:34
○ 2026-02-15 23:04:12
○ 2026-08-07 05:18:10

○NSns.partner-one.dk2015-06-01 → 2017-01-25 · 4 obs

● 2015-06-01 01:30:52
● 2017-01-25 17:17:34
○ 2026-02-15 23:04:12
○ 2026-08-07 05:18:10

●NSns1.simply.com2026-02-15 → 2026-08-07 · 3 obs

○ 2017-01-25 17:17:34
● 2026-02-15 23:04:12
● 2026-08-07 05:18:10

○NSns2.partner-one.dk2015-06-01 → 2017-01-25 · 4 obs

● 2015-06-01 01:30:52
● 2017-01-25 17:17:34
○ 2026-02-15 23:04:12
○ 2026-08-07 05:18:10

●NSns2.simply.com2026-02-15 → 2026-08-07 · 3 obs

○ 2017-01-25 17:17:34
● 2026-02-15 23:04:12
● 2026-08-07 05:18:10

●NSns3.simply.com2026-02-15 → 2026-08-07 · 3 obs

○ 2017-01-25 17:17:34
● 2026-02-15 23:04:12
● 2026-08-07 05:18:10

●NSns4.simply.com2026-02-15 → 2026-08-07 · 3 obs

○ 2017-01-25 17:17:34
● 2026-02-15 23:04:12
● 2026-08-07 05:18:10

○MXknowhow.dk2015-06-01 → 2017-01-25 · 4 obs

● 2015-06-01 01:30:52
● 2017-01-25 17:17:34
○ 2026-02-15 23:04:12
○ 2026-08-07 05:18:10

○MXmail.knowhow.dk2015-06-01 → 2017-01-25 · 4 obs

● 2015-06-01 01:30:52
● 2017-01-25 17:17:34
○ 2026-02-15 23:04:12
○ 2026-08-07 05:18:10

●MXmx.simply.com2026-02-15 → 2026-08-07 · 3 obs

○ 2017-01-25 17:17:34
● 2026-02-15 23:04:12
● 2026-08-07 05:18:10

○A80.72.150.402015-06-01 → 2017-01-25 · 4 obs

● 2015-06-01 01:30:52
● 2017-01-25 17:17:34
○ 2026-02-15 23:04:12
○ 2026-08-07 05:18:10

●A94.231.103.1422026-02-15 → 2026-08-07 · 3 obs

○ 2017-01-25 17:17:34
● 2026-02-15 23:04:12
● 2026-08-07 05:18:10

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:91.197.248.80

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: 998ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`94.231.103.142`
NS	4	`ns2.simply.com, ns1.simply.com...`
MX	1	`mx.simply.com (pri: 10)`
TXT	1	`v=spf1 include:sendgrid.net ~all`
SOA	1	`ns1.simply.com hostmaster.simply.com`

Analysis

Hierarchy

dina.knowhow.dk, zh.knowhow.dk, mail.knowhow.dk, ally.knowhow.dk, cher.knowhow.dk and a few other host names are all children of knowhow.dk.

IP Addresses

knowhow.dk resolves to one IP address: 94.231.103.142.

hvidtfeldts.net, thehithouse.dk, smartworld.dk and two other host names share IP numbers with knowhow.dk.

Name Servers

The authoritative name servers for knowhow.dk are ns1.simply.com, ns2.simply.com, ns3.simply.com and ns4.simply.com.

The name servers of knowhow.dk overlap at least partially with those of other domains — among them taxelsen.dk, dyrholmaudio.com, modeelskeren.dk and two more.

These name servers commonly appear in combination with the name servers ns1.unoeuro.com.

Hostnames that resolve to two IP addresses:

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 with just one IP address:

ns3.simply.com resolves to 91.197.248.79.

ns4.simply.com resolves to 91.197.248.80.

Mail Servers

Mail for knowhow.dk is handled by a single mail server, mx.simply.com.

knowhow.dk uses an identical mail server configuration to several other domains — among them brandtolsen.dk, novopro.se, anderspaulsson.se and two more.

knowhow.dk has mail servers in common with other domains — bohuskk.se being one example.

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