`21cf.dk`

DNSSEC	⚠️ Not signed
NS	`dns1.cscdns.net` ⭐
		A	2610:a1:1022::100^{🇺🇸 MAINT-ID-120082610:a1:1022::/48 Neustar}
			PTR	`ns1.arcemus.com`
			PTR	`kandns06.digitalarchives.com`
			PTR	`ns1.euro909.com`
			PTR	`ns2.euro909.com`
			PTR	`indom10.indomco.com`
			PTR	`indom30.indomco.fr`
			PTR	`ns1.ascio.net`
			PTR	`ns3.ascio.net`
			PTR	`dns1.cscdns.net`
			PTR	`pdns1.cscdns.net`
			PTR	`sbdns3.cscdns.net`
			PTR	`spdns3.cscdns.net`
			PTR	`ns0.netnames.net`
			PTR	`ns1.netnames.net`
			PTR	`ns3.netnames.net`
			PTR	`ns5.netnames.net`
			PTR	`ns7.netnames.net`
			PTR	`indom130.indomco.org`
			PTR	`ns2.domainnetwork.se`
			PTR	`ns.domainnetwork.se`
		A	156.154.130.100^{🇺🇸 MAINT-ID-12008156.154.130.0/24 Neustar}
			PTR	`ns1.arcemus.com`
			PTR	`kandns06.digitalarchives.com`
			PTR	`ns1.euro909.com`
			PTR	`ns2.euro909.com`
			PTR	`indom10.indomco.com`
			PTR	`indom30.indomco.fr`
			PTR	`ns1.ascio.net`
			PTR	`ns3.ascio.net`
			PTR	`dns1.cscdns.net`
			PTR	`pdns1.cscdns.net`
			PTR	`sbdns3.cscdns.net`
			PTR	`spdns3.cscdns.net`
			PTR	`ns0.netnames.net`
			PTR	`ns1.netnames.net`
			PTR	`ns3.netnames.net`
			PTR	`ns5.netnames.net`
			PTR	`ns7.netnames.net`
			PTR	`indom130.indomco.org`
			PTR	`ns2.domainnetwork.se`
			PTR	`ns.domainnetwork.se`
NS	`dns2.cscdns.net`
		A	2610:a1:1023::100^{🇺🇸 MAINT-ID-120082610:a1:1023::/48 Neustar}
			PTR	`ns2.arcemus.com`
			PTR	`nusdns06.digitalarchives.com`
			PTR	`ns3.domainnetwork.com`
			PTR	`ns3.euro909.com`
			PTR	`indom80.indomco.hk`
			PTR	`ns2.ascio.net`
			PTR	`ns4.ascio.net`
			PTR	`dns2.cscdns.net`
			PTR	`pdns2.cscdns.net`
			PTR	`indom20.indomco.net`
			PTR	`ns2.netnames.net`
			PTR	`ns4.netnames.net`
			PTR	`ns6.netnames.net`
			PTR	`ns8.netnames.net`
		A	156.154.131.100^{🇺🇸 MAINT-ID-12008156.154.131.0/24 Neustar}
			PTR	`ns2.arcemus.com`
			PTR	`nusdns06.digitalarchives.com`
			PTR	`ns3.domainnetwork.com`
			PTR	`ns3.euro909.com`
			PTR	`indom80.indomco.hk`
			PTR	`ns2.ascio.net`
			PTR	`ns4.ascio.net`
			PTR	`dns2.cscdns.net`
			PTR	`pdns2.cscdns.net`
			PTR	`indom20.indomco.net`
			PTR	`ns2.netnames.net`
			PTR	`ns4.netnames.net`
			PTR	`ns6.netnames.net`
			PTR	`ns8.netnames.net`
SOA	`dns1.cscdns.net`hostmaster@cscdns.net 2020-03-18 #2

`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 1778648401localtime Wed May 13 07:00:01 2026gmtime Wed Ma...`
	SOA	`b.nic.dk`tech@punktum.dk serial=1778648401

Same first word

21cf.ceo

21cf.ca

21cf.network

21cf.com.co

21cf.co.at

21cf.net

21cf.me

21cf.fyi

21cf.com.ar

21cf.com.es

21cf.tel

21cf.marketing

21cf.email

21cf.com.hn

21cf.business

21cf.pt

21cf.studio

21cf.events

21cf.cl

21cf.name

21cf.co

21cf.net.au

21cf.productions

21cf.ae

21cf.do

21cf.adult

21cf.film

21cf.com.cn

21cf.social

21cf.ch

21cf.tw

21cf.co.il

21cf.net.cn

21cf.com.pr

21cf.info

21cf.de

21cf.com.tw

21cf.site

21cf.club

21cf.com.pl

21cf.pictures

21cf.dk

21cf.pl

21cf.com.gt

21cf.global

21cf.buzz

21cf.org.cn

21cf.com.eg

21cf.com.mx

21cf.com.tr

21cf.review

21cf.com.do

21cf.london

21cf.es

21cf.gr

21cf.holdings

21cf.pr

21cf.no

21cf.com.ua

21cf.media

21cf.com.ru

21cf.(0x706f726e)

21cf.co.ke

21cf.sa

21cf.us

21cf.community

21cf.fi

21cf.wang

21cf.nl

21cf.at

21cf.mx

21cf.hn

21cf.jp

21cf.ee

21cf.tv

21cf.international

21cf.ie

21cf.be

21cf.movie

21cf.fr

21cf.eu

21cf.enterprises

21cf.com.ph

21cf.com.hr

21cf.com

21cf.sg

21cf.com.pe

21cf.in

21cf.trade

21cf.website

21cf.com.pt

21cf.cz

Similar names

c21f.com

cf21.com

f12c.com

fc12.com

21fc.com

12fc.com

c1f2.com

12fc.nl

cf12.net

2f1c.com

fc21.com

12cf.com.cn

cf12.org

fc21.cn

fc21.jp

1c2f.tv

DNS History

7 records (2 active, 5 former)

●NSdns1.cscdns.net2026-05-11 → 2026-05-13 · 3 obs

○ 2017-12-07 07:46:00
● 2026-05-11 21:34:22
● 2026-05-13 05:14:44

●NSdns2.cscdns.net2026-05-11 → 2026-05-13 · 3 obs

○ 2017-12-07 07:46:00
● 2026-05-11 21:34:22
● 2026-05-13 05:14:44

○NSns1.foxfilm.com2015-04-01 → 2017-12-07 · 4 obs

● 2015-04-01 19:02:32
● 2017-12-07 07:46:00
○ 2026-05-11 21:34:22
○ 2026-05-13 05:14:44

○NSns2.foxfilm.com2015-04-01 → 2017-12-07 · 4 obs

● 2015-04-01 19:02:32
● 2017-12-07 07:46:00
○ 2026-05-11 21:34:22
○ 2026-05-13 05:14:44

○MXmail.foxfilm.com2015-04-01 → 2017-12-07 · 4 obs

● 2015-04-01 19:02:32
● 2017-12-07 07:46:00
○ 2026-05-11 21:34:22
○ 2026-05-13 05:14:44

○MXmail2.foxfilm.com2015-04-01 → 2017-12-07 · 4 obs

● 2015-04-01 19:02:32
● 2017-12-07 07:46:00
○ 2026-05-11 21:34:22
○ 2026-05-13 05:14:44

○A204.236.227.2062015-04-01 → 2017-12-07 · 4 obs

● 2015-04-01 19:02:32
● 2017-12-07 07:46:00
○ 2026-05-11 21:34:22
○ 2026-05-13 05:14:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dk	b.nic.dk, c.nic.dk, h.nic.dk, l.nic.dk...	-
21cf.dk	dns1.cscdns.net, dns2.cscdns.net	-

✅ Authoritative Response

Server:156.154.130.100

NS records: dns1.cscdns.net, dns2.cscdns.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21cf.dk (unsigned zone)

⏱️ Timing

Total: 700ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns1.cscdns.net, dns2.cscdns.net`
SOA	1	`dns1.cscdns.net hostmaster.cscdns.net`

Analysis

Name Servers

21cf.dk is delegated to two name servers dns1.cscdns.net and dns2.cscdns.net.

21cf.dk shares the same name server setup as other domains, for instance childrensplace.am, toctino.com.mx, what-is-hemophilia.com, rixos.co.uk and wwwtruistbank.info.

21cf.dk shares name servers with other domains at least partially, for example sydneymarkets.com.au and glaxosmithkline.gy.

Host names with two IP numbers:

The host name dns1.cscdns.net points to 2610:a1:1022::100 and 156.154.130.100; the host name dns2.cscdns.net points to 2610:a1:1023::100 and 156.154.131.100.

21cf.dk - robtex.com

21cf.dk

dk

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Name Servers

`21cf.dk`

`dk`