ack.dk - dns.ninja

`ack.dk`

DNSSEC	⚠️ Not signed
A	2606:4700:3036::6815:1ef5^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:ae36^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.30.245^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.174.54^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`duke.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b6e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c16e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`duke.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:216e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`duke.ns.cloudflare.com`
		A	108.162.193.110^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
		A	172.64.33.110^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
		A	173.245.59.110^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
NS	`kiki.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ab4^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kiki.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0b4^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`kiki.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20b4^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`kiki.ns.cloudflare.com`
		A	108.162.192.180^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kiki.ns.cloudflare.com`
		A	172.64.32.180^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kiki.ns.cloudflare.com`
		A	173.245.58.180^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kiki.ns.cloudflare.com`
MX	`_dc-mx.753ffd5ca6bd.ack.dk` ⭐
		A	84.19.174.8^{🇦🇹 KEYWEB-AS84.19.160.0/19 Keyweb AG IP Network}
			PTR	`srv84191748.internet-server.dk`
TXT	`v=spf1 mx a ip4:84.19.174.8 ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.30.245, 172.67.174.54
		IPv6 hints	2606:4700:3036::6815:1ef5, 2606:4700:3037::ac43:ae36
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=255, name=cloudflare-ech.com
SOA	`duke.ns.cloudflare.com`dns@cloudflare.com serial=2402947878

`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 1780894621localtime Mon Jun 8 06:57:01 2026gmtime Mon Ju...`
	SOA	`b.nic.dk`tech@punktum.dk serial=1780894621

Subdomains

mail.ack.dk

www.ack.dk

Same first word

ack.red

ack.net.pl

ack.co.il

ack.ventures

ack.network

ack.us

ack.edu.pl

ack.li

ack.canon

ack.to

ack.ua

ack.sh

ack.jp

ack.systems

ack.biz

ack.co.in

ack.art

ack.at

ack.ru

ack.com

ack.ca

ack.gg

ack.org.pl

ack.nl

ack.be

ack.ee

ack.com.ua

ack.co.id

ack.cc

ack.ink

ack.org

ack.lv

ack.ch

ack.si

ack.one

ack.ac.th

ack.cz

ack.de

ack.flights

ack.co.kr

ack.studio

ack.dk

ack.net

ack.zone

ack.by

ack.today

ack.se

ack.fr

ack.mx

ack.es

ack.lat

ack.it

ack.vn

ack.me

ack.pl

ack.sk

ack.bar

ack.co

ack.ne.kr

ack.app

ack.kz

ack.eu

ack.ad

ack.no

ack.land

ack.design

ack.cl

ack.properties

ack.hr

ack.fi

ack.lublin.pl

ack.pw

ack.tf

ack.info

ack.hu

Similar names

akc.biz

cka.dk

cka.net

kca.ru

kca.org.pk

akc.co.uk

akc.is

kca.eu

kca.co.jp

kac.jp

kac.co.kr

cak.nl

kac.ac.jp

kca.vn

kac.ch

kca.com

cka.com.ua

cka.it

akc.kz

akc.nl

cak.ch

cak.cz

kca.cloud

cak.com.tr

cka.me

cka.com.br

kca.nl

cka.com

cka.adv.br

cak.au

kca.bz

cka.us

kac.qa

akc.me

kca.es

kca.org.uk

kca.or.jp

kac.ru

akc.co.il

kca.ir

kca.fr

akc.co.in

akc.no

cka.com.mx

kca.training

akc.us

cak.ca

cka.co.id

kac.jpn.org

akc.ca

kac.nz

akc.co.kr

kac.net.au

cak.com.au

akc.hu

kac.org

akc.se

kca.me

kca.dk

kca.co

kca.kr

cak.at

akc.si

cka.nu

kac.co.in

akc.in

akc.dk

kca.org.tw

akc.cz

cka.cz

cak.hu

cak.pl

kca.it

cak.no

cak.biz.id

kca.com.pk

akc.ru

kac.org.uk

kac.in

cka.org.tr

DNS History

29 records (7 active, 22 former)

●NSduke.ns.cloudflare.com2026-04-24 → 2026-06-08 · 3 obs

○ 2026-04-19 18:41:44
● 2026-04-24 20:38:40
● 2026-06-08 05:00:26

●NSkiki.ns.cloudflare.com2026-04-24 → 2026-06-08 · 3 obs

○ 2026-04-19 18:41:44
● 2026-04-24 20:38:40
● 2026-06-08 05:00:26

○NSmns01.domaincontrol.com2016-03-16 → 2017-01-05 · 5 obs

○ 2015-12-05 19:46:42
● 2016-03-16 03:10:34
● 2017-01-05 04:55:22
○ 2017-05-04 04:22:40
○ 2026-06-08 05:00:26

○NSmns02.domaincontrol.com2016-03-16 → 2017-01-05 · 5 obs

○ 2015-12-05 19:46:42
● 2016-03-16 03:10:34
● 2017-01-05 04:55:22
○ 2017-05-04 04:22:40
○ 2026-06-08 05:00:26

○NSns1.abakomp.dk2026-02-15 → 2026-04-19 · 5 obs

○ 2017-07-22 02:40:44
● 2026-02-15 20:09:18
● 2026-04-19 18:41:44
○ 2026-04-24 20:38:40
○ 2026-06-08 05:00:26

○NSns1.hyp.net2015-12-05 → 2015-12-05 · 3 obs

● 2015-12-05 19:46:42
○ 2016-03-16 03:10:34
○ 2026-06-08 05:00:26

○NSns1pri.webhosting.dk2017-05-04 → 2017-07-22 · 5 obs

○ 2017-01-05 04:55:22
● 2017-05-04 04:22:40
● 2017-07-22 02:40:44
○ 2026-02-15 20:09:18
○ 2026-06-08 05:00:26

○NSns2.abakomp.dk2026-02-15 → 2026-04-19 · 5 obs

○ 2017-07-22 02:40:44
● 2026-02-15 20:09:18
● 2026-04-19 18:41:44
○ 2026-04-24 20:38:40
○ 2026-06-08 05:00:26

○NSns2.hyp.net2015-12-05 → 2015-12-05 · 3 obs

● 2015-12-05 19:46:42
○ 2016-03-16 03:10:34
○ 2026-06-08 05:00:26

○NSns2.webhosting.dk2017-05-04 → 2017-07-22 · 5 obs

○ 2017-01-05 04:55:22
● 2017-05-04 04:22:40
● 2017-07-22 02:40:44
○ 2026-02-15 20:09:18
○ 2026-06-08 05:00:26

○NSns3.hyp.net2015-12-05 → 2015-12-05 · 3 obs

● 2015-12-05 19:46:42
○ 2016-03-16 03:10:34
○ 2026-06-08 05:00:26

○NSns3.webhosting.dk2017-05-04 → 2017-07-22 · 5 obs

○ 2017-01-05 04:55:22
● 2017-05-04 04:22:40
● 2017-07-22 02:40:44
○ 2026-02-15 20:09:18
○ 2026-06-08 05:00:26

○NSns7.webhosting.dk2017-05-04 → 2017-07-22 · 5 obs

○ 2017-01-05 04:55:22
● 2017-05-04 04:22:40
● 2017-07-22 02:40:44
○ 2026-02-15 20:09:18
○ 2026-06-08 05:00:26

●MX_dc-mx.753ffd5ca6bd.ack.dk2026-04-24 → 2026-06-08 · 3 obs

○ 2026-04-19 18:41:44
● 2026-04-24 20:38:40
● 2026-06-08 05:00:26

○MXmail.ack.dk2026-02-15 → 2026-04-19 · 5 obs

○ 2017-07-22 02:40:44
● 2026-02-15 20:09:18
● 2026-04-19 18:41:44
○ 2026-04-24 20:38:40
○ 2026-06-08 05:00:26

○MXmailstore1.europe.secureserver.net2016-03-16 → 2017-01-05 · 5 obs

○ 2015-12-05 19:46:42
● 2016-03-16 03:10:34
● 2017-01-05 04:55:22
○ 2017-05-04 04:22:40
○ 2026-06-08 05:00:26

○MXmx01.domeneshop.no2015-12-05 → 2015-12-05 · 3 obs

● 2015-12-05 19:46:42
○ 2016-03-16 03:10:34
○ 2026-06-08 05:00:26

○MXmx02.domeneshop.no2015-12-05 → 2015-12-05 · 3 obs

● 2015-12-05 19:46:42
○ 2016-03-16 03:10:34
○ 2026-06-08 05:00:26

○MXmx03.domeneshop.no2015-12-05 → 2015-12-05 · 3 obs

● 2015-12-05 19:46:42
○ 2016-03-16 03:10:34
○ 2026-06-08 05:00:26

○MXmx04.domeneshop.no2015-12-05 → 2015-12-05 · 3 obs

● 2015-12-05 19:46:42
○ 2016-03-16 03:10:34
○ 2026-06-08 05:00:26

○MXsmtp.europe.secureserver.net2016-03-16 → 2017-01-05 · 5 obs

○ 2015-12-05 19:46:42
● 2016-03-16 03:10:34
● 2017-01-05 04:55:22
○ 2017-05-04 04:22:40
○ 2026-06-08 05:00:26

○MXwebhotel30.webhosting.dk2017-05-04 → 2017-07-22 · 5 obs

○ 2017-01-05 04:55:22
● 2017-05-04 04:22:40
● 2017-07-22 02:40:44
○ 2026-02-15 20:09:18
○ 2026-06-08 05:00:26

●A104.21.30.2452026-04-24 → 2026-06-08 · 3 obs

○ 2026-04-19 18:41:44
● 2026-04-24 20:38:40
● 2026-06-08 05:00:26

●A172.67.174.542026-04-24 → 2026-06-08 · 3 obs

○ 2026-04-19 18:41:44
● 2026-04-24 20:38:40
● 2026-06-08 05:00:26

●A2606:4700:3036::6815:1ef52026-04-24 → 2026-06-08 · 3 obs

○ 2026-04-19 18:41:44
● 2026-04-24 20:38:40
● 2026-06-08 05:00:26

●A2606:4700:3037::ac43:ae362026-04-24 → 2026-06-08 · 3 obs

○ 2026-04-19 18:41:44
● 2026-04-24 20:38:40
● 2026-06-08 05:00:26

○A72.167.191.692016-03-16 → 2017-01-05 · 4 obs

● 2016-03-16 03:10:34
● 2017-01-05 04:55:22
○ 2017-05-04 04:22:40
○ 2026-06-08 05:00:26

○A81.19.232.1302017-05-04 → 2017-07-22 · 5 obs

○ 2017-01-05 04:55:22
● 2017-05-04 04:22:40
● 2017-07-22 02:40:44
○ 2026-02-15 20:09:18
○ 2026-06-08 05:00:26

○A84.19.174.82026-02-15 → 2026-04-19 · 5 obs

○ 2017-07-22 02:40:44
● 2026-02-15 20:09:18
● 2026-04-19 18:41:44
○ 2026-04-24 20:38:40
○ 2026-06-08 05:00:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dk	l.nic.dk, c.nic.dk, b.nic.dk, h.nic.dk...	-
ack.dk	duke.ns.cloudflare.com, kiki.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.180

NS records: duke.ns.cloudflare.com, kiki.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ack.dk (unsigned zone)

⏱️ Timing

Total: 1843ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.174.54, 104.21.30.245`
AAAA	2	`2606:4700:3036::6815:1ef5, 2606:4700:3037::ac43:ae36`
NS	2	`duke.ns.cloudflare.com, kiki.ns.cloudflare.com`
MX	1	`_dc-mx.753ffd5ca6bd.ack.dk (pri: 10)`
TXT	1	`v=spf1 mx a ip4:84.19.174.8 ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`duke.ns.cloudflare.com dns.cloudflare.co`

Analysis

Hierarchy

ack.dk is the parent domain of mail.ack.dk and www.ack.dk.

IP Addresses

ack.dk resolves to 4 IP numbers: 104.21.30.245, 172.67.174.54, 2606:4700:3036::6815:1ef5 and 2606:4700:3037::ac43:ae36.

Additional host names — straightthugs.com, ridisperqu.pro, babyhaomama.com and two others — share IP numbers with ack.dk.

Name Servers

DNS delegation for ack.dk points to two name servers: duke.ns.cloudflare.com and kiki.ns.cloudflare.com.

ack.dk shares its name server setup with other domains, including pingvinen.eu, pedaleur.dk, mnlawoffice.com and two others.

ack.dk shares at least some of its name servers with other domains, including garage-corselis.be, nativespeakermethod.com, zsoolifes.pro and two others.

These name servers are frequently paired with the name servers walt.ns.cloudflare.com and cash.ns.cloudflare.com.

Host names with 6 IP numbers:

duke.ns.cloudflare.com points to 108.162.193.110, 172.64.33.110, 173.245.59.110 and three other IP addresses.

kiki.ns.cloudflare.com points to 108.162.192.180, 172.64.32.180, 173.245.58.180 and three other IP addresses.

Mail Servers

ack.dk has one mail server: _dc-mx.753ffd5ca6bd.ack.dk.

_dc-mx.753ffd5ca6bd.ack.dk has exactly one IP number: 84.19.174.8.