ref.dk - dns.ninja

ref.dk

DNSSEC⚠️ Not signed
A176.9.16.109🇩🇪 Hetzner176.9.0.0/16 HETZNER-RZ-FKS-BLK4
PTRstatic.109.16.9.176.clients.your-server.de
NSns.zqz.dk ⭐
A78.47.93.245🇩🇪 Hetzner78.46.0.0/15 HETZNER-RZ-NBG-BLK5
PTRmailhost.xyved.dk
NSns1.first-ns.de
A2a01:4f8:0:a101::a:1🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK
PTRns1.first-ns.de
A213.239.242.238🇩🇪 Hetzner213.239.192.0/18 HETZNER-RZ-NBG-BLK2
PTRns1.first-ns.de
NSrobotns2.second-ns.de
A2a01:4f8:0:1::5ddc:2🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK
PTRrobotns2.second-ns.de
A213.133.100.103🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1
PTRrobotns2.second-ns.de
NSrobotns3.second-ns.com
A2001:67c:192c::add:a3🇩🇪 NORIS-NETWORK2001:67c:192c::/48
PTRrobotns3.second-ns.com
A193.47.99.3🇩🇪 NORIS-NETWORK193.47.99.0/24
PTRrobotns3.second-ns.com
MXmailhost.xyved.dk ⭐
A78.47.93.245🇩🇪 Hetzner78.46.0.0/15 HETZNER-RZ-NBG-BLK5
PTRmailhost.xyved.dk
MXb.mx.zqz.dk(20)
A78.47.93.245🇩🇪 Hetzner78.46.0.0/15 HETZNER-RZ-NBG-BLK5
PTRmailhost.xyved.dk
SOAns.zqz.dkhostmaster@ref.dk serial=1651826367

dk

DNSSEC🔒 Signed (DS record present)
NSb.nic.dk ⭐
NSc.nic.dk
NSh.nic.dk
NSl.nic.dk
NSs.nic.dk
NSt.nic.dk
TXTDK zone updateEpoch 1780590241localtime Thu Jun 4 18:24:01 2026gmtime Thu Ju...
SOAb.nic.dktech@punktum.dk serial=1780590247

Subdomains

hostmaster.ref.dk

Same first word

ref.org.au
ref.pl
ref.ru
ref.com.hk
ref.or.kr
ref.plus
ref.or.jp
ref.expert
ref.in.ua
ref.training
ref.ng
ref.mx
ref.hk
ref.so
ref.eu
ref.house
ref.readthedocs.io
ref.ch
ref.us
ref.se
ref.ac.uk
ref.tools
ref.no
ref.to
ref.tc
ref.lv
ref.biz
ref.it
ref.li
ref.ua
ref.ms
ref.asia
ref.com.ua
ref.my
ref.world
ref.vn
ref.me
ref.pt
ref.ca
ref.net
ref.kr
ref.center
ref.lt
ref.org.uk
ref.am
ref.sh
ref.direct
ref.at
ref.dk
ref.de
ref.is
ref.ee
ref.com.tw
ref.gv.at
ref.ge
ref.fm
ref.finance
ref.gr
ref.agency
ref.ly
ref.sg
ref.by
ref.com.br
ref.im
ref.nhs.uk
ref.wang
ref.scot
ref.box
ref.cards
ref.info
ref.management
ref.es
ref.cn
ref.hu
ref.com
ref.co
ref.org
ref.today
ref.az
ref.re

Similar names

erf.it
erf.org.tw
fre.at
rfe.ro
rfe.de
fre.org.uk
fre.sk
efr.com.tr
efr.net
fer.gov.pl
erf.org.au
fer.lt
fer.gov.rw
fer.es
efr.co
fer.eu
fre.be
fer.al
fre.ag
fer.biz
fer.de
fre.pl
fer.pl
rfe.com.ar
fre.net
rfe.blob.core.windows.net
fre.nl
efr.com.mx
rfe.by
fer.com.ua
fre.de
fre.gr
fer.mx
rfe.org.cn
fre.lu
rfe.com
rfe.at
fer.marketing
fre.com.br
rfe.co.nz
fre.ch
fer.tel
efr.ru
fer.ai
fre.ro
erf.net
fer.ru
fer.org.mx
fer.si
fer.name
erf.be
fer.org.br
rfe.hu
fre.jp
fer.hr
rfe.mobi
fre.es
efr.app
fer.co
erf.org.uk
efr.com
fre.dk
fer.hu
fer.or.kr
efr.io
fer.ca
fer.dk
fer.com.br
fer.uz
fre.agency
rfe.cc
fer.se
fer.network
rfe.net
efr.es
rfe.eu
rfe.ca
fer.com

DNS History

14 records (7 active, 7 former)

20162017201820192020202120222023202420252026NSns.zqz.dkns1.first-ns.derobotns2.second-ns.derobotns3.second-ns.comns1.gratisdns.dkns2.gratisdns.dkns3.gratisdns.dkns4.gratisdns.dkns5.gratisdns.dkMXb.mx.zqz.dkmailhost.xyved.dka.mx.xyved.dkmail.musikcheck.dkA176.9.16.109
●NSns.zqz.dk2015-06-23 → 2026-06-04 · 2 obs
● 2015-06-23 10:43:18
● 2026-06-04 16:28:00
●NSns1.first-ns.de2026-02-14 → 2026-06-04 · 3 obs
○ 2021-04-06 21:17:12
● 2026-02-14 23:02:40
● 2026-06-04 16:28:00
○NSns1.gratisdns.dk2015-06-23 → 2021-04-06 · 4 obs
● 2015-06-23 10:43:18
● 2021-04-06 21:17:12
○ 2026-02-14 23:02:40
○ 2026-06-04 16:28:00
○NSns2.gratisdns.dk2015-06-23 → 2021-04-06 · 4 obs
● 2015-06-23 10:43:18
● 2021-04-06 21:17:12
○ 2026-02-14 23:02:40
○ 2026-06-04 16:28:00
○NSns3.gratisdns.dk2015-06-23 → 2021-04-06 · 4 obs
● 2015-06-23 10:43:18
● 2021-04-06 21:17:12
○ 2026-02-14 23:02:40
○ 2026-06-04 16:28:00
○NSns4.gratisdns.dk2015-06-23 → 2021-04-06 · 4 obs
● 2015-06-23 10:43:18
● 2021-04-06 21:17:12
○ 2026-02-14 23:02:40
○ 2026-06-04 16:28:00
○NSns5.gratisdns.dk2015-06-23 → 2021-04-06 · 4 obs
● 2015-06-23 10:43:18
● 2021-04-06 21:17:12
○ 2026-02-14 23:02:40
○ 2026-06-04 16:28:00
●NSrobotns2.second-ns.de2026-02-14 → 2026-06-04 · 3 obs
○ 2021-04-06 21:17:12
● 2026-02-14 23:02:40
● 2026-06-04 16:28:00
●NSrobotns3.second-ns.com2026-02-14 → 2026-06-04 · 3 obs
○ 2021-04-06 21:17:12
● 2026-02-14 23:02:40
● 2026-06-04 16:28:00
○MXa.mx.xyved.dk2015-06-23 → 2021-04-06 · 4 obs
● 2015-06-23 10:43:18
● 2021-04-06 21:17:12
○ 2026-02-14 23:02:40
○ 2026-06-04 16:28:00
●MXb.mx.zqz.dk2026-02-14 → 2026-06-04 · 3 obs
○ 2021-04-06 21:17:12
● 2026-02-14 23:02:40
● 2026-06-04 16:28:00
○MXmail.musikcheck.dk2015-06-23 → 2016-08-23 · 4 obs
● 2015-06-23 10:43:18
● 2016-08-23 11:19:30
○ 2016-12-18 08:26:42
○ 2026-06-04 16:28:00
●MXmailhost.xyved.dk2026-02-14 → 2026-06-04 · 3 obs
○ 2021-04-06 21:17:12
● 2026-02-14 23:02:40
● 2026-06-04 16:28:00
●A176.9.16.1092015-06-23 → 2026-06-04 · 2 obs
● 2015-06-23 10:43:18
● 2026-06-04 16:28:00

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dkb.nic.dk, h.nic.dk, t.nic.dk, c.nic.dk...12 records
ref.dkns.zqz.dk, ns1.first-ns.de, robotns2.second-ns.de, robotns3.second-ns.com1 record

✅ Authoritative Response

Server:193.47.99.3

NS records: ns.zqz.dk, ns1.first-ns.de, robotns2.second-ns.de, robotns3.second-ns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ref.dk (unsigned zone)

⏱️ Timing

Total: 1517ms | Queries: -

📄 Records

TypeCountSample Data
A1176.9.16.109
NS4robotns3.second-ns.com, ns.zqz.dk...
MX2mailhost.xyved.dk (pri: 10), b.mx.zqz.dk (pri: 20)
SOA1ns.zqz.dk hostmaster.ref.dk

📌 Glue Records Collected

Total: 13

In-bailiwick: 12 (b.nic.dk, b.nic.dk, h.nic.dk...)

Out-of-bailiwick: 1 (ns.zqz.dk)

Analysis

Hierarchy

The domain hostmaster.ref.dk falls under the parent ref.dk.

IP Addresses

ref.dk points to a single IP number: 176.9.16.109.

Additional host names — a.mx.zqz.dk, hostmaster.acom.dk, hostmaster.acom-net.com and two others — share IP numbers with ref.dk.

Name Servers

Authority for ref.dk is delegated across 4 name servers: robotns3.second-ns.com, ns1.first-ns.de, robotns2.second-ns.de and ns.zqz.dk.

At least some of ref.dk's name servers are shared with other domains, for example web-vision.biz, blogreen.org, andreas-diendorfer.at and two more.

Host names with two IP numbers:

robotns3.second-ns.com resolves to two addresses: 193.47.99.3 and 2001:67c:192c::add:a3.

ns1.first-ns.de resolves to two addresses: 213.239.242.238 and 2a01:4f8:0:a101::a:1.

robotns2.second-ns.de resolves to two addresses: 213.133.100.103 and 2a01:4f8:0:1::5ddc:2.

Host names with one IP number:

The hostname ns.zqz.dk resolves to 78.47.93.245.

Mail Servers

ref.dk has two mail servers: mailhost.xyved.dk and b.mx.zqz.dk.

ref.dk shares the same mail server setup as other domains, including hausmann.dk, aagejensen.dk, zqz.dk and two others.

ref.dk shares mail servers — at least in part — with other domains, including splydrk.net, hvalros.dk, splydrk.dk and two others.

mailhost.xyved.dk directs to 78.47.93.245, as does b.mx.zqz.dk — both hostnames resolve to that one IP address.

mailhost.xyved.dk along with b.mx.zqz.dk each resolve to 78.47.93.245 IP addresses.