refs.dk - dns.ninja

refs.dk

DNSSEC🔒 Signed (DS record present)
A2a02:2350:5:10a:809d:4e6f:6195:1b4c🇩🇰 ONECOM2a02:2350::/32 One.com A/S
A46.30.213.51🇩🇰 ONECOM46.30.208.0/21 One.com A/S
NSns01.one.com ⭐
A2001:67c:28cc::10ONECOM-INFRA2001:67c:28cc::/48
PTRns01.one.com
A195.206.121.10ONECOM-INFRA195.206.121.0/24
PTRns01.one.com
NSns02.one.com
A2001:67c:3c0::10🇩🇰 ONECOM2001:67c:3c0::/48
PTRns02.one.com
A185.10.11.10ONECOM185.10.11.0/24
PTRns02.one.com
MXmx1.pub.mailpod10-cph3.one.com ⭐
A104.37.34.70🇩🇰 ONECOM104.37.32.0/21 One.com A/S
PTRmx1.pub.mailpod10-cph3.one.com
MXmx2.pub.mailpod10-cph3.one.com ⭐
A104.37.34.71🇩🇰 ONECOM104.37.32.0/21 One.com A/S
PTRmx2.pub.mailpod10-cph3.one.com
MXmx3.pub.mailpod10-cph3.one.com ⭐
A104.37.34.72🇩🇰 ONECOM104.37.32.0/21 One.com A/S
PTRmx3.pub.mailpod10-cph3.one.com
MXmx4.pub.mailpod10-cph3.one.com ⭐
A104.37.34.73🇩🇰 ONECOM104.37.32.0/21 One.com A/S
PTRmx4.pub.mailpod10-cph3.one.com
SOAns01.one.comhostmaster@one.com 2026-05-29 #1

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 1782172981localtime Tue Jun 23 02:03:01 2026gmtime Tue Ju...
SOAb.nic.dktech@punktum.dk serial=1782172981

Same first word

refs.co.nz
refs.eu
refs.net.au
refs.tv
refs.com.cn
refs.fr
refs.ws
refs.ru
refs.lv
refs.in.ua
refs.cn
refs.info
refs.me
refs.de
refs.land
refs.pl
refs.at
refs.com
refs.dk
refs.cc
refs.co.uk
refs.su
refs.org
refs.nl
refs.co.jp
refs.ca

Similar names

fsre.de
fesr.org
sref.com
fers.gov.pl
fsre.net
resf.net
frse.net
serf.com.br
frse.cn
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sefr.net
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frse.dk
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sfre.us
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fsre.ru
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fers.org.ar
serf.pro
resf.com
sefr.org
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fres.nl
rfes.com
fres.org.pl
sfer.cn
resf.de
frse.com
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rfes.com.au
sref.info
fesr.ru
esrf.org
fesr.com
resf.com.au
serf.co
sefr.nl
resf.org
sref.de
serf.app
rfse.org
sfre.co
rfse.or.kr
serf.com
rfes.de
sfre.jp
fesr.com.mx
ersf.org.uk
fsre.nl
fser.net
serf.city
fesr.io
serf.de
fres.com
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sefr.ir
fers.asso.fr
fres.ro
esfr.com
fres.co.nz
sfer.co.in
esrf.de
esrf.com
fres.com.au
sfer.com
esfr.cn
fesr.net
serf.net
frse.org.pl
sefr.com
serf.tv
esfr.org
esrf.ru
serf.ws
efrs.org
sref.in
fers.eu
serf.io
esfr.pl
serf.it
frse.pl
fsre.com
ersf.com
esrf.net
fres.co
fres.no
sfer.org
sefr.fr
sfre.sh.cn
fres.be
serf.cz
serf.us
frse.ru
erfs.de
efrs.ru
ersf.com.br
fsre.ch
rsef.com
efsr.org
fres.cn
fers.education
serf.ru
sfre.de
fres.eu
rsef.es
fsre.com.au
sefr.in
sfer.ch
rfse.nl
esfr.de
fres.fr
rfes.co.uk
fser.org
efrs.com

DNS History

18 records (8 active, 10 former)

20162017201820192020202120222023202420252026NSns01.one.comns02.one.comMXmx1.pub.mailpod10-cph3.one.commx2.pub.mailpod10-cph3.one.commx3.pub.mailpod10-cph3.one.commx4.pub.mailpod10-cph3.one.commx1.pub.mailpod5-cph3.one.commx2.pub.mailpod5-cph3.one.commx3.pub.mailpod5-cph3.one.commxcluster1.one.commxcluster2.one.comA2a02:2350:5:10a:809d:4e6f:6195:1b4c46.30.213.512a02:2350:5:103:9d:4e6f:6195:1b4c46.30.211.19946.30.212.17446.30.213.21146.30.213.7
●NSns01.one.com2015-09-03 → 2026-06-23 · 2 obs
● 2015-09-03 23:43:16
● 2026-06-23 00:05:22
●NSns02.one.com2015-09-03 → 2026-06-23 · 2 obs
● 2015-09-03 23:43:16
● 2026-06-23 00:05:22
●MXmx1.pub.mailpod10-cph3.one.com2026-06-04 → 2026-06-23 · 3 obs
○ 2026-03-02 06:53:20
● 2026-06-04 13:40:04
● 2026-06-23 00:05:22
○MXmx1.pub.mailpod5-cph3.one.com2020-11-02 → 2026-03-02 · 5 obs
○ 2017-04-03 14:48:20
● 2020-11-02 05:14:38
● 2026-03-02 06:53:20
○ 2026-06-04 13:40:04
○ 2026-06-23 00:05:22
●MXmx2.pub.mailpod10-cph3.one.com2026-06-04 → 2026-06-23 · 3 obs
○ 2026-03-02 06:53:20
● 2026-06-04 13:40:04
● 2026-06-23 00:05:22
○MXmx2.pub.mailpod5-cph3.one.com2020-11-02 → 2026-03-02 · 5 obs
○ 2017-04-03 14:48:20
● 2020-11-02 05:14:38
● 2026-03-02 06:53:20
○ 2026-06-04 13:40:04
○ 2026-06-23 00:05:22
●MXmx3.pub.mailpod10-cph3.one.com2026-06-04 → 2026-06-23 · 3 obs
○ 2026-03-02 06:53:20
● 2026-06-04 13:40:04
● 2026-06-23 00:05:22
○MXmx3.pub.mailpod5-cph3.one.com2020-11-02 → 2026-03-02 · 5 obs
○ 2017-04-03 14:48:20
● 2020-11-02 05:14:38
● 2026-03-02 06:53:20
○ 2026-06-04 13:40:04
○ 2026-06-23 00:05:22
●MXmx4.pub.mailpod10-cph3.one.com2026-06-04 → 2026-06-23 · 3 obs
○ 2026-03-02 06:53:20
● 2026-06-04 13:40:04
● 2026-06-23 00:05:22
○MXmxcluster1.one.com2015-09-03 → 2017-04-03 · 4 obs
● 2015-09-03 23:43:16
● 2017-04-03 14:48:20
○ 2020-11-02 05:14:38
○ 2026-06-23 00:05:22
○MXmxcluster2.one.com2015-09-03 → 2017-04-03 · 4 obs
● 2015-09-03 23:43:16
● 2017-04-03 14:48:20
○ 2020-11-02 05:14:38
○ 2026-06-23 00:05:22
○A2a02:2350:5:103:9d:4e6f:6195:1b4c2020-11-02 → 2020-11-02 · 4 obs
○ 2017-04-03 14:48:20
● 2020-11-02 05:14:38
○ 2026-03-02 06:53:20
○ 2026-06-23 00:05:22
●A2a02:2350:5:10a:809d:4e6f:6195:1b4c2026-03-02 → 2026-06-23 · 3 obs
○ 2020-11-02 05:14:38
● 2026-03-02 06:53:20
● 2026-06-23 00:05:22
○A46.30.211.1992016-03-19 → 2017-01-18 · 5 obs
○ 2016-02-23 06:52:02
● 2016-03-19 17:20:30
● 2017-01-18 20:32:08
○ 2017-03-25 00:56:08
○ 2026-06-23 00:05:22
○A46.30.212.1742015-09-03 → 2016-02-23 · 4 obs
● 2015-09-03 23:43:16
● 2016-02-23 06:52:02
○ 2016-03-19 17:20:30
○ 2026-06-23 00:05:22
○A46.30.213.2112020-11-02 → 2020-11-02 · 4 obs
○ 2017-04-03 14:48:20
● 2020-11-02 05:14:38
○ 2026-03-02 06:53:20
○ 2026-06-23 00:05:22
●A46.30.213.512026-03-02 → 2026-06-23 · 3 obs
○ 2020-11-02 05:14:38
● 2026-03-02 06:53:20
● 2026-06-23 00:05:22
○A46.30.213.72017-03-25 → 2017-04-03 · 5 obs
○ 2017-01-18 20:32:08
● 2017-03-25 00:56:08
● 2017-04-03 14:48:20
○ 2020-11-02 05:14:38
○ 2026-06-23 00:05:22

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dkb.nic.dk, c.nic.dk, h.nic.dk, l.nic.dk...-
refs.dkns02.one.com, ns01.one.com-

✅ Authoritative Response

Server:195.206.121.10

NS records: ns02.one.com, ns01.one.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1136ms | Queries: -

📄 Records

TypeCountSample Data
A146.30.213.51
AAAA12a02:2350:5:10a:809d:4e6f:6195:1b4c
NS2ns01.one.com, ns02.one.com
MX4mx2.pub.mailpod10-cph3.one.com (pri: 10), mx4.pub.mailpod10-cph3.one.com (pri: 10)...
SOA1ns01.one.com hostmaster.one.com

Analysis

IP Addresses

refs.dk resolves to the IP addresses 46.30.213.51 and 2a02:2350:5:10a:809d:4e6f:6195:1b4c

www.roennebech.dk, hostrups.net, learnex.in plus two other host names have IP numbers in common with refs.dk.

Name Servers

refs.dk has two authoritative name servers — ns01.one.com and ns02.one.com.

The name server configuration of refs.dk is shared with other domains, for instance schemaworks.com, energiserltd.com, padu.be and two others.

Both ns01.one.com and ns02.one.com have two IP addresses each. ns01.one.com resolves to 195.206.121.10 and 2001:67c:28cc::10; ns02.one.com resolves to 185.10.11.10 and 2001:67c:3c0::10.

Mail Servers

refs.dk has four mail servers: mx1.pub.mailpod10-cph3.one.com, mx2.pub.mailpod10-cph3.one.com, mx3.pub.mailpod10-cph3.one.com and mx4.pub.mailpod10-cph3.one.com.

At least some of the mail servers used by refs.dk are shared with other domains: mitelman.se, albinmyers.net, papertree.be and two others among them.

Four host names, each with one IP address: mx1.pub.mailpod10-cph3.one.com has 104.37.34.70, mx2.pub.mailpod10-cph3.one.com has 104.37.34.71, mx3.pub.mailpod10-cph3.one.com has 104.37.34.72 and mx4.pub.mailpod10-cph3.one.com has 104.37.34.73.