ack.dk - dns.ninja

`ack.dk`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::6815:1ef5^{🇺🇸 Cloudflare2606:4700:3032::/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	2606:4700:3032::6815:1ef5, 2606:4700:3037::ac43:ae36
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=238, name=cloudflare-ech.com
SOA	`duke.ns.cloudflare.com`dns@cloudflare.com serial=2410367939

`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 1786089420localtime Fri Aug 7 09:57:00 2026gmtime Fri Au...`
	SOA	`b.nic.dk`tech@punktum.dk serial=1786089420

Subdomains

mail.ack.dk

www.ack.dk

Same first word

ack.canva-apps.cn

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.legal

ack.lv

ack.ch

ack.si

ack.one

ack.ac.th

ack.estate

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.com.pl

ack.vn

ack.nu

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

kca.net.au

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

cak.gl

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

akc.co.in

akc.no

cka.com.mx

kca.training

cak.ca

cka.co.id

kac.jpn.org

cka.pt

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

DNS History

34 records (7 active, 27 former)

●NSduke.ns.cloudflare.com2026-04-24 → 2026-08-07 · 3 obs

○ 2026-04-19 18:41:44
● 2026-04-24 20:38:40
● 2026-08-07 08:21:16

●NSkiki.ns.cloudflare.com2026-04-24 → 2026-08-07 · 3 obs

○ 2026-04-19 18:41:44
● 2026-04-24 20:38:40
● 2026-08-07 08:21:16

○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
○ 2026-08-07 08:21:16

○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
○ 2026-08-07 08:21:16

○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
○ 2026-08-07 08:21:16

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

● 2015-12-05 19:46:42
○ 2016-03-16 03:10:34
○ 2026-08-07 08:21:16

○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
○ 2026-08-07 08:21:16

○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
○ 2026-08-07 08:21:16

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

● 2015-12-05 19:46:42
○ 2016-03-16 03:10:34
○ 2026-08-07 08:21:16

○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
○ 2026-08-07 08:21:16

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

● 2015-12-05 19:46:42
○ 2016-03-16 03:10:34
○ 2026-08-07 08:21:16

○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
○ 2026-08-07 08:21:16

○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
○ 2026-08-07 08:21:16

●MX_dc-mx.753ffd5ca6bd.ack.dk2026-04-24 → 2026-08-07 · 3 obs

○ 2026-04-19 18:41:44
● 2026-04-24 20:38:40
● 2026-08-07 08:21:16

○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
○ 2026-08-07 08:21:16

○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
○ 2026-08-07 08:21:16

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

● 2015-12-05 19:46:42
○ 2016-03-16 03:10:34
○ 2026-08-07 08:21:16

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

● 2015-12-05 19:46:42
○ 2016-03-16 03:10:34
○ 2026-08-07 08:21:16

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

● 2015-12-05 19:46:42
○ 2016-03-16 03:10:34
○ 2026-08-07 08:21:16

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

● 2015-12-05 19:46:42
○ 2016-03-16 03:10:34
○ 2026-08-07 08:21:16

○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
○ 2026-08-07 08:21:16

○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
○ 2026-08-07 08:21:16

●A104.21.30.2452026-04-24 → 2026-08-07 · 7 obs

○ 2026-04-19 18:41:44
● 2026-04-24 20:38:40
○ 2026-06-22 17:09:54
● 2026-06-22 20:26:54
○ 2026-06-24 19:51:58
● 2026-06-25 04:39:54
● 2026-08-07 08:21:16

●A172.67.174.542026-04-24 → 2026-08-07 · 7 obs

○ 2026-04-19 18:41:44
● 2026-04-24 20:38:40
○ 2026-06-22 17:09:54
● 2026-06-22 20:26:54
○ 2026-06-24 19:51:58
● 2026-06-25 04:39:54
● 2026-08-07 08:21:16

○A188.114.96.02026-06-22 → 2026-06-24 · 6 obs

○ 2026-06-19 19:40:26
● 2026-06-22 17:09:54
○ 2026-06-22 20:26:54
● 2026-06-24 19:51:58
○ 2026-06-25 04:39:54
○ 2026-08-07 08:21:16

○A188.114.97.02026-06-22 → 2026-06-24 · 6 obs

○ 2026-06-19 19:40:26
● 2026-06-22 17:09:54
○ 2026-06-22 20:26:54
● 2026-06-24 19:51:58
○ 2026-06-25 04:39:54
○ 2026-08-07 08:21:16

●A2606:4700:3032::6815:1ef52026-06-19 → 2026-08-07 · 7 obs

○ 2026-04-24 20:38:40
● 2026-06-19 19:40:26
○ 2026-06-22 17:09:54
● 2026-06-22 20:26:54
○ 2026-06-24 19:51:58
● 2026-06-25 04:39:54
● 2026-08-07 08:21:16

○A2606:4700:3036::6815:1ef52026-04-24 → 2026-04-24 · 4 obs

○ 2026-04-19 18:41:44
● 2026-04-24 20:38:40
○ 2026-06-19 19:40:26
○ 2026-08-07 08:21:16

●A2606:4700:3037::ac43:ae362026-04-24 → 2026-08-07 · 7 obs

○ 2026-04-19 18:41:44
● 2026-04-24 20:38:40
○ 2026-06-22 17:09:54
● 2026-06-22 20:26:54
○ 2026-06-24 19:51:58
● 2026-06-25 04:39:54
● 2026-08-07 08:21:16

○A2a06:98c1:3120::2026-06-22 → 2026-06-24 · 6 obs

○ 2026-06-19 19:40:26
● 2026-06-22 17:09:54
○ 2026-06-22 20:26:54
● 2026-06-24 19:51:58
○ 2026-06-25 04:39:54
○ 2026-08-07 08:21:16

○A2a06:98c1:3121::2026-06-22 → 2026-06-24 · 6 obs

○ 2026-06-19 19:40:26
● 2026-06-22 17:09:54
○ 2026-06-22 20:26:54
● 2026-06-24 19:51:58
○ 2026-06-25 04:39:54
○ 2026-08-07 08:21:16

○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
○ 2026-08-07 08:21:16

○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
○ 2026-08-07 08:21:16

○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
○ 2026-08-07 08:21:16

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:108.162.193.110

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: 491ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.30.245, 172.67.174.54`
AAAA	2	`2606:4700:3032::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 four IP addresses: 104.21.30.245, 172.67.174.54, 2606:4700:3032::6815:1ef5 and 2606:4700:3037::ac43:ae36.

Additional host names — straightthugs.com, gamblingmirrorhub.co.uk, www.tosmg.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 rbk.dk, pingvinen.eu, pedaleur.dk 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, martha.ns.cloudflare.com and cash.ns.cloudflare.com.

Host names with 6 IP numbers:

duke.ns.cloudflare.com has IP addresses 108.162.193.110, 172.64.33.110 and 173.245.59.110, plus 3 other.

kiki.ns.cloudflare.com has IP addresses 108.162.192.180, 172.64.32.180 and 173.245.58.180, plus 3 other.

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.