rtk.dk - dns.ninja

`rtk.dk`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:a82a^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::6815:269f^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.38.159^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.168.42^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`beth.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a67^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`beth.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c067^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`beth.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2067^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`beth.ns.cloudflare.com`
		A	108.162.192.103^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`beth.ns.cloudflare.com`
		A	172.64.32.103^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`beth.ns.cloudflare.com`
		A	173.245.58.103^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`beth.ns.cloudflare.com`
NS	`jim.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b7d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jim.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c17d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jim.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:217d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jim.ns.cloudflare.com`
		A	108.162.193.125^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jim.ns.cloudflare.com`
		A	172.64.33.125^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jim.ns.cloudflare.com`
		A	173.245.59.125^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jim.ns.cloudflare.com`
MX	`route2.mx.cloudflare.net` ⭐
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
MX	`route1.mx.cloudflare.net`⁽⁵³⁾
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
MX	`route3.mx.cloudflare.net`⁽⁸²⁾
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.38.159, 172.67.168.42
		IPv6 hints	2606:4700:3031::ac43:a82a, 2606:4700:3033::6815:269f
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=194, name=cloudflare-ech.com
SOA	`beth.ns.cloudflare.com`dns@cloudflare.com serial=2409755233

`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 1785326401localtime Wed Jul 29 14:00:01 2026gmtime Wed Ju...`
	SOA	`b.nic.dk`tech@punktum.dk serial=1785326401

Subdomains

www.rtk.dk

Same first word

rtk.in

rtk.com.au

rtk.poznan.pl

rtk.net

rtk.jp

rtk.dp.ua

rtk.com.ua

rtk.co.rs

rtk.nu

rtk.cc

rtk.ee

rtk.eu

rtk.technology

rtk.co.il

rtk.ro

rtk.at

rtk.market

rtk.co.za

rtk.io

rtk.org

rtk.pl

rtk.gen.tr

rtk.nl

rtk.ch

rtk.center

rtk.sk

rtk.rs

rtk.land

rtk.com.cn

rtk.biz

rtk.co.uk

rtk.email

rtk.it

rtk.promo

rtk.lt

rtk.kz

rtk.lv

rtk.su

rtk.co.jp

rtk.us

rtk.com.br

rtk.de

rtk.live

rtk.com.tr

rtk.info

rtk.se

rtk.net.pl

rtk.es

rtk.mx

rtk.fr

rtk.be

rtk.fi

rtk.com.vn

rtk.cl

rtk.dk

rtk.cz

rtk.com

rtk.ca

Similar names

ktr.pl

rkt.pl

trk.pl

tkr.in

rkt.fi

tkr.es

trk.cn

tkr.fi

trk.st.no

ktr.ee

ktr.co.th

ktr.or.kr

krt.at

krt.cc

rkt.co.uk

tkr.jp

ktr.tj

trk.org.pl

krt.bz

trk.info

ktr.biz

ktr.com.au

ktr.spb.ru

ktr.mobi

ktr.photos

rkt.de

ktr.es

krt.gr

krt.fr

krt.jp

tkr.enterprises

krt.net

rkt.name

ktr.su

trk.es

tkr.si

krt.com.tr

ktr.kz

tkr.com.my

rkt.dk

tkr.hu

rkt.ai

trk.co.kr

ktr.in

trk.sc

rkt.ru

krt.org

ktr.at

tkr.dk

ktr.krakow.pl

krt.it

trk.pro

rkt.money

krt.com.hr

ktr.hu

krt.ch

tkr.tc

tkr.no-ip.biz

krt.nl

trk.mx

tkr.coffee

ktr.go.th

krt.de

rkt.at

ktr.com

krt.co.za

ktr.net

ktr.de

ktr.it

tkr.go.th

ktr.fo

krt.dk

tkr.nl

rkt.net.au

tkr.cz

DNS History

31 records (9 active, 22 former)

●NSbeth.ns.cloudflare.com2026-03-31 → 2026-07-29 · 3 obs

○ 2026-03-16 23:43:38
● 2026-03-31 20:00:24
● 2026-07-29 12:41:02

●NSjim.ns.cloudflare.com2026-03-31 → 2026-07-29 · 3 obs

○ 2026-03-16 23:43:38
● 2026-03-31 20:00:24
● 2026-07-29 12:41:02

○NSjoel.ns.cloudflare.com2016-06-15 → 2017-10-17 · 5 obs

○ 2016-03-01 18:42:16
● 2016-06-15 08:26:30
● 2017-10-17 08:13:42
○ 2026-03-16 23:43:38
○ 2026-07-29 12:41:02

○NSlisa.ns.cloudflare.com2016-06-15 → 2017-10-17 · 5 obs

○ 2016-03-01 18:42:16
● 2016-06-15 08:26:30
● 2017-10-17 08:13:42
○ 2026-03-16 23:43:38
○ 2026-07-29 12:41:02

○NSns1.hoelstad.biz2015-06-19 → 2016-03-01 · 4 obs

● 2015-06-19 11:03:56
● 2016-03-01 18:42:16
○ 2016-06-15 08:26:30
○ 2026-07-29 12:41:02

○NSns1.simply.com2026-03-16 → 2026-03-16 · 4 obs

○ 2017-10-17 08:13:42
● 2026-03-16 23:43:38
○ 2026-03-31 20:00:24
○ 2026-07-29 12:41:02

○NSns2.hoelstad.biz2015-06-19 → 2016-03-01 · 4 obs

● 2015-06-19 11:03:56
● 2016-03-01 18:42:16
○ 2016-06-15 08:26:30
○ 2026-07-29 12:41:02

○NSns2.simply.com2026-03-16 → 2026-03-16 · 4 obs

○ 2017-10-17 08:13:42
● 2026-03-16 23:43:38
○ 2026-03-31 20:00:24
○ 2026-07-29 12:41:02

○NSns3.simply.com2026-03-16 → 2026-03-16 · 4 obs

○ 2017-10-17 08:13:42
● 2026-03-16 23:43:38
○ 2026-03-31 20:00:24
○ 2026-07-29 12:41:02

●MXroute1.mx.cloudflare.net2026-03-31 → 2026-07-29 · 2 obs

● 2026-03-31 20:00:24
● 2026-07-29 12:41:02

●MXroute2.mx.cloudflare.net2026-03-31 → 2026-07-29 · 2 obs

● 2026-03-31 20:00:24
● 2026-07-29 12:41:02

●MXroute3.mx.cloudflare.net2026-03-31 → 2026-07-29 · 2 obs

● 2026-03-31 20:00:24
● 2026-07-29 12:41:02

○A104.18.42.1452016-06-15 → 2017-10-17 · 5 obs

○ 2016-03-01 18:42:16
● 2016-06-15 08:26:30
● 2017-10-17 08:13:42
○ 2026-03-16 23:43:38
○ 2026-07-29 12:41:02

○A104.18.43.1452016-06-15 → 2017-10-17 · 5 obs

○ 2016-03-01 18:42:16
● 2016-06-15 08:26:30
● 2017-10-17 08:13:42
○ 2026-03-16 23:43:38
○ 2026-07-29 12:41:02

●A104.21.38.1592026-03-31 → 2026-07-29 · 50 obs

○ 2026-03-16 23:43:38
● 2026-03-31 20:00:24
○ 2026-04-06 16:29:30
○ 2026-04-09 12:45:56
● 2026-04-20 10:36:22
○ 2026-04-24 20:29:40
○ 2026-05-02 21:17:22
● 2026-05-05 00:42:28
○ 2026-05-07 00:39:30
○ 2026-05-12 08:11:42
● 2026-05-12 11:27:24
○ 2026-05-12 16:02:34
● 2026-05-12 17:41:24
○ 2026-05-12 18:59:40
○ 2026-05-13 00:09:20
● 2026-05-13 19:32:36
○ 2026-05-13 23:34:36
○ 2026-05-15 18:56:16
● 2026-05-16 00:50:58
○ 2026-05-16 03:00:42
○ 2026-05-21 19:34:52
● 2026-05-22 00:50:44
○ 2026-05-22 01:44:22
○ 2026-05-29 03:39:52
● 2026-05-29 15:21:24
● 2026-05-29 17:00:18
○ 2026-05-30 00:29:20
○ 2026-05-31 09:04:20
● 2026-05-31 20:40:34
● 2026-06-01 07:32:16
○ 2026-06-01 18:30:58
○ 2026-06-02 04:59:44
● 2026-06-02 10:12:02
○ 2026-06-02 15:41:58
○ 2026-06-06 19:57:06
● 2026-06-07 03:33:44
○ 2026-06-07 11:15:08
○ 2026-06-07 16:50:50
● 2026-06-08 17:58:20
○ 2026-06-09 13:10:18
○ 2026-06-11 10:26:28
● 2026-06-11 16:05:16
○ 2026-06-12 07:42:38
● 2026-07-02 04:54:48
○ 2026-07-02 11:51:30
● 2026-07-15 19:29:42
○ 2026-07-15 20:30:36
● 2026-07-15 21:03:20
○ 2026-07-15 22:34:18
● 2026-07-29 12:41:02

●A172.67.168.422026-03-31 → 2026-07-29 · 50 obs

○A188.114.96.02026-04-06 → 2026-07-15 · 52 obs

○ 2026-03-31 20:00:24
● 2026-04-06 16:29:30
● 2026-04-09 12:45:56
○ 2026-04-20 10:36:22
● 2026-04-24 20:29:40
● 2026-05-02 21:17:22
○ 2026-05-05 00:42:28
● 2026-05-07 00:39:30
● 2026-05-12 08:11:42
○ 2026-05-12 11:27:24
● 2026-05-12 16:02:34
○ 2026-05-12 17:41:24
● 2026-05-12 18:59:40
● 2026-05-13 00:09:20
○ 2026-05-13 19:32:36
● 2026-05-13 23:34:36
● 2026-05-15 18:56:16
○ 2026-05-16 00:50:58
● 2026-05-16 03:00:42
● 2026-05-21 19:34:52
○ 2026-05-22 00:50:44
● 2026-05-22 01:44:22
● 2026-05-29 03:39:52
○ 2026-05-29 15:21:24
○ 2026-05-29 17:00:18
● 2026-05-30 00:29:20
● 2026-05-31 09:04:20
○ 2026-05-31 20:40:34
○ 2026-06-01 07:32:16
● 2026-06-01 18:30:58
● 2026-06-02 04:59:44
○ 2026-06-02 10:12:02
● 2026-06-02 15:41:58
● 2026-06-03 13:49:22
○ 2026-06-03 23:53:24
● 2026-06-04 10:31:18
● 2026-06-06 19:57:06
○ 2026-06-07 03:33:44
● 2026-06-07 11:15:08
● 2026-06-07 16:50:50
○ 2026-06-08 17:58:20
● 2026-06-09 13:10:18
● 2026-06-11 10:26:28
○ 2026-06-11 16:05:16
● 2026-06-12 07:42:38
○ 2026-07-02 04:54:48
● 2026-07-02 11:51:30
○ 2026-07-15 19:29:42
● 2026-07-15 20:30:36
○ 2026-07-15 21:03:20
● 2026-07-15 22:34:18
○ 2026-07-29 12:41:02

○A188.114.96.42026-06-03 → 2026-06-03 · 4 obs

○ 2026-06-03 13:49:22
● 2026-06-03 23:53:24
○ 2026-06-04 10:31:18
○ 2026-07-29 12:41:02

○A188.114.97.02026-04-06 → 2026-07-15 · 52 obs

○A188.114.97.42026-06-03 → 2026-06-03 · 4 obs

○ 2026-06-03 13:49:22
● 2026-06-03 23:53:24
○ 2026-06-04 10:31:18
○ 2026-07-29 12:41:02

○A217.195.176.1222015-06-19 → 2016-03-01 · 4 obs

● 2015-06-19 11:03:56
● 2016-03-01 18:42:16
○ 2016-06-15 08:26:30
○ 2026-07-29 12:41:02

○A2400:cb00:2048:1::6812:2a912017-09-29 → 2017-10-17 · 5 obs

○ 2016-06-15 08:26:30
● 2017-09-29 17:09:02
● 2017-10-17 08:13:42
○ 2026-03-16 23:43:38
○ 2026-07-29 12:41:02

○A2400:cb00:2048:1::6812:2b912017-09-29 → 2017-10-17 · 5 obs

○ 2016-06-15 08:26:30
● 2017-09-29 17:09:02
● 2017-10-17 08:13:42
○ 2026-03-16 23:43:38
○ 2026-07-29 12:41:02

●A2606:4700:3031::ac43:a82a2026-07-02 → 2026-07-29 · 8 obs

○ 2026-06-12 07:42:38
● 2026-07-02 04:54:48
○ 2026-07-02 11:51:30
● 2026-07-15 19:29:42
○ 2026-07-15 20:30:36
● 2026-07-15 21:03:20
○ 2026-07-15 22:34:18
● 2026-07-29 12:41:02

●A2606:4700:3033::6815:269f2026-07-02 → 2026-07-29 · 8 obs

○ 2026-06-12 07:42:38
● 2026-07-02 04:54:48
○ 2026-07-02 11:51:30
● 2026-07-15 19:29:42
○ 2026-07-15 20:30:36
● 2026-07-15 21:03:20
○ 2026-07-15 22:34:18
● 2026-07-29 12:41:02

○A2606:4700:3033::ac43:a82a2026-03-31 → 2026-06-11 · 44 obs

○A2606:4700:3034::6815:269f2026-03-31 → 2026-06-11 · 44 obs

○A2a06:98c1:3120::2026-04-06 → 2026-07-15 · 52 obs

○A2a06:98c1:3120::42026-06-03 → 2026-06-03 · 4 obs

○ 2026-06-03 13:49:22
● 2026-06-03 23:53:24
○ 2026-06-04 10:31:18
○ 2026-07-29 12:41:02

○A2a06:98c1:3121::2026-04-06 → 2026-07-15 · 52 obs

○A2a06:98c1:3121::42026-06-03 → 2026-06-03 · 4 obs

○ 2026-06-03 13:49:22
● 2026-06-03 23:53:24
○ 2026-06-04 10:31:18
○ 2026-07-29 12:41:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dk	b.nic.dk, h.nic.dk, t.nic.dk, c.nic.dk...	-
rtk.dk	jim.ns.cloudflare.com, beth.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.193.125

NS records: jim.ns.cloudflare.com, beth.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rtk.dk (unsigned zone)

⏱️ Timing

Total: 872ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.38.159, 172.67.168.42`
AAAA	2	`2606:4700:3033::6815:269f, 2606:4700:3031::ac43:a82a`
NS	2	`beth.ns.cloudflare.com, jim.ns.cloudflare.com`
MX	3	`route2.mx.cloudflare.net (pri: 19), route1.mx.cloudflare.net (pri: 53)...`
TXT	1	`v=spf1 include:_spf.mx.cloudflare.net ~a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`beth.ns.cloudflare.com dns.cloudflare.co`

Analysis

Hierarchy

www.rtk.dk is a subdomain of rtk.dk.

IP Addresses

rtk.dk directs to four IP numbers, which are 104.21.38.159, 172.67.168.42, 2606:4700:3031::ac43:a82a and 2606:4700:3033::6815:269f.

Additional host names — opensourcewave.io, acrimoney.com, www.realmpush.cyou and two others — share IP numbers with rtk.dk.

Name Servers

The NS records for rtk.dk delegate to beth.ns.cloudflare.com and jim.ns.cloudflare.com.

rtk.dk shares its name server setup with other domains, including ashleighmoneysaver.co.uk, bogklubben.dk, ops.ro and two others.

The name servers of rtk.dk overlap at least partially with those of other domains — among them helpbuy.us, pacts.com, signeda.ua and two more.

Host names with 6 IP numbers:

beth.ns.cloudflare.com maps to 108.162.192.103, 172.64.32.103, 173.245.58.103 and 3 additional IP addresses.

jim.ns.cloudflare.com maps to 108.162.193.125, 172.64.33.125, 173.245.59.125 and 3 additional IP addresses.

Mail Servers

Mail for rtk.dk is routed through three mail servers — route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

rtk.dk shares mail servers — at least in part — with other domains, including giggog.com, lunadawn.net, spartancasino.ca and two others.

Host names with 6 IP numbers:

route1.mx.cloudflare.net maps to 162.159.205.11, 162.159.205.12, 162.159.205.13 and 3 additional IP addresses.

route2.mx.cloudflare.net maps to 162.159.205.17, 162.159.205.18, 162.159.205.19 and 3 additional IP addresses.

route3.mx.cloudflare.net maps to 162.159.205.23, 162.159.205.24, 162.159.205.25 and 3 additional IP addresses.