cert.dk - dns.ninja

cert.dk

DNSSEC🔒 Signed (DS record present)
A2001:878:0:e000:82:e2:ad:a🇩🇰 FSKNET-DK2001:878::/32 FORSKNINGSNETTET-6BLOCK1
PTRwebhotel5.deic.dk
A130.226.173.10🇩🇰 FSKNET-DK130.226.0.0/16 Forskningsnettet-130.226
NSmimer.deic.dk ⭐
A2001:87f:ff27:65::66🇩🇰 I2-HOSTING2001:87f::/32 FORSKNINGSNETTET-6BLOCK8
PTRmimer.deic.dk
A95.128.27.66🇩🇰 I2-HOSTING95.128.24.0/21 DENet DK DeIC/I2
PTRmimer.deic.dk
NSns-soa.darenet.dk
A2001:878:0:e000:82:e2:b3:32🇩🇰 FSKNET-DK2001:878::/32 FORSKNINGSNETTET-6BLOCK1
PTRns-soa.darenet.dk
A130.226.179.50🇩🇰 FSKNET-DK130.226.0.0/16 Forskningsnettet-130.226
PTRns-soa.darenet.dk
NSorion.i2.dk
A78.153.182.90🇩🇰 GlobalConnect-AS3102778.153.160.0/19
PTRorion.i2.dk
MXcert-dk.mail.protection.outlook.com ⭐
A2a01:111:f403:ca04::🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-db3pr0202cu00100.inbound.protection.outlook.com
A2a01:111:f403:ca04::6🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-db4pr02cu00406.inbound.protection.outlook.com
A2a01:111:f403:ca04::d🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-db6pr03cu00105.inbound.protection.outlook.com
A2a01:111:f403:ca09::3🇳🇱 Microsoft2a01:111:f000::/36
PTRmail-am6pr04cu00303.inbound.protection.outlook.com
A52.101.68.36🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-db5pr02cu00104.inbound.protection.outlook.com
A52.101.73.2🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-as9pr07cu00302.inbound.protection.outlook.com
A52.101.73.11🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-am1pr04cu00103.inbound.protection.outlook.com
A52.101.73.16🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-as2pr05cu00100.inbound.protection.outlook.com
TXTHARICA-6Srfqrln9KXiGjX1nil
TXTSOA=1783502815
TXThave-i-been-pwned-verification=dweb_l5wz2p6q4t4kjdyfqdsmu5pz
TXTMS=ms53563777
TXTv=spf1 include:spf.protection.outlook.com ip4:130.226.1.62 ip4:130.226.249.20...
SOAmimer.deic.dkdns@darenet.dk serial=1785901454

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 1785905101localtime Wed Aug 5 06:45:01 2026gmtime Wed Au...
SOAb.nic.dktech@punktum.dk serial=1785905101
WOT: SAFE (91/100)

Subdomains

host15.cert.dk
host14.cert.dk
host17.cert.dk
host05.cert.dk
host19.cert.dk
host22.cert.dk
www.cert.dk
host25.cert.dk
host28.cert.dk
host07.cert.dk
host23.cert.dk
host24.cert.dk
host03.cert.dk
host20.cert.dk
host18.cert.dk
host29.cert.dk
host06.cert.dk
uni-c.cert.dk
host13.cert.dk
host16.cert.dk
host26.cert.dk
host01.cert.dk

Same first word

cert.to
cert.si
cert.center
cert.net.nz
cert.org.in
cert.kr
cert.work
cert.gov.lv
cert.tech
cert.ee
cert.is
cert.gl
cert.cr
cert.mobi
cert.cc
cert.kg
cert.br
cert.ist
cert.gt
cert.by
cert.az
cert.tips
cert.org
cert.ir
cert.co
cert.mil
cert.hu
cert.edu.au
cert.ae
cert.gov.az
cert.gov.au
cert.ac.il
cert.fr
cert.gub.uy
cert.gov.ng
cert.tel
cert.gov.to
cert.eu
cert.ac.cn
cert.care
cert.id
cert.org.hk
cert.gov.lk
cert.pa
cert.tn
cert.kz
cert.dyndns.tv
cert.com.mx
cert.com
cert.pt
cert.ma
cert.mincom.tn
cert.at
cert.cn
cert.sk
cert.fi
cert.ie
cert.dynalias.com
cert.co.uk
cert.uy
cert.rs
cert.gov.iq
cert.dev
cert.uz
cert.eus
cert.axa
cert.or.id
cert.cz
cert.net
cert.zone
cert.co.in
cert.ren
cert.nyc
cert.gov.py
cert.gov.pl
cert.gov.ru
cert.cw
cert.md
cert.lv
cert.school
cert.company
cert.toscana.it
cert.gov.ge
cert.cx
cert.it
cert.ca
cert.org.tw
cert.coop
cert.org.pl
cert.ro
cert.be
cert.dk
cert.im
cert.lk
cert.ac.in
cert.hr
cert.pl
cert.ge
cert.sd
cert.management
cert.org.cn
cert.gov.sa
cert.org.ro
cert.cl
cert.wtf
cert.pk
cert.ru
cert.fyi
cert.nrw
cert.me
cert.tj
cert.info
cert.gov.kg
cert.bg
cert.com.au
cert.edu.mx
cert.lt
cert.am
cert.govt.nz
cert.se
cert.hk
cert.gov.ua
cert.no
cert.biz
cert.gov.ly
cert.gov.om
cert.gov.tm
cert.appspot.com

Similar names

trec.ru
tcer.com.br
trec.co.ir
trce.com
rcet.org
rect.com
trec.pro
erct.ru
trec.jp
ertc.us
terc.cn
tecr.de
trec.co.nz
erct.eu
ectr.cn
cret.nl
ertc.me
cetr.com
trec.us
cetr.de
cter.org.cn
ectr.ru
rect.me
etrc.org
cetr.eu
rtec.dk
ctre.com.br
cret.it
rtec.co.uk
cetr.net
rect.al
rcte.com.br
tcre.net
rtec.network
rect.de
tcre.com
cret.jp
trec.com.mx
rtec.at
trec.cn
cter.fr
tcre.net.au
terc.de
rcet.cn
ectr.net
erct.fr
ertc.ru
rtec.ae
trec.org.ua
retc.com
rtec.co
ertc.credit
trec.mx
cret.biz
trec.dj
ectr.co.uk
ctre.org
tcre.com.au
etcr.com.cn
ertc.org
terc.es
rtce.cn
trec.com
rect.dev

DNS History

12 records (6 active, 6 former)

20162017201820192020202120222023202420252026NSmimer.deic.dkns-soa.darenet.dkorion.i2.dkmimer.snet.uvm.dkMXcert-dk.mail.protection.outlook.commx.antispam.i2.dkmx.antispam.uni-c.dkA130.226.173.102001:878:0:e000:82:e2:ad:a130.225.250.1302001:878:f500:807::395.128.24.188
●NSmimer.deic.dk2016-04-01 → 2026-08-05 · 3 obs
○ 2016-01-22 06:18:20
● 2016-04-01 18:17:52
● 2026-08-05 04:47:56
○NSmimer.snet.uvm.dk2015-08-16 → 2016-01-22 · 4 obs
● 2015-08-16 21:48:34
● 2016-01-22 06:18:20
○ 2016-04-01 18:17:52
○ 2026-08-05 04:47:56
●NSns-soa.darenet.dk2015-08-16 → 2026-08-05 · 2 obs
● 2015-08-16 21:48:34
● 2026-08-05 04:47:56
●NSorion.i2.dk2026-02-14 → 2026-08-05 · 3 obs
○ 2016-04-01 18:17:52
● 2026-02-14 20:03:20
● 2026-08-05 04:47:56
●MXcert-dk.mail.protection.outlook.com2026-02-14 → 2026-08-05 · 3 obs
○ 2017-09-22 02:34:34
● 2026-02-14 20:03:20
● 2026-08-05 04:47:56
○MXmx.antispam.i2.dk2017-09-20 → 2017-09-22 · 5 obs
○ 2017-07-19 17:32:12
● 2017-09-20 06:21:52
● 2017-09-22 02:34:34
○ 2026-02-14 20:03:20
○ 2026-08-05 04:47:56
○MXmx.antispam.uni-c.dk2015-08-16 → 2017-07-19 · 4 obs
● 2015-08-16 21:48:34
● 2017-07-19 17:32:12
○ 2017-09-20 06:21:52
○ 2026-08-05 04:47:56
○A130.225.250.1302017-04-08 → 2017-09-22 · 5 obs
○ 2017-01-28 21:21:32
● 2017-04-08 07:37:30
● 2017-09-22 02:34:34
○ 2026-02-14 20:03:20
○ 2026-08-05 04:47:56
●A130.226.173.102026-02-14 → 2026-08-05 · 3 obs
○ 2017-09-22 02:34:34
● 2026-02-14 20:03:20
● 2026-08-05 04:47:56
●A2001:878:0:e000:82:e2:ad:a2026-02-14 → 2026-08-05 · 3 obs
○ 2017-09-22 02:34:34
● 2026-02-14 20:03:20
● 2026-08-05 04:47:56
○A2001:878:f500:807::32017-04-08 → 2017-09-22 · 5 obs
○ 2017-01-28 21:21:32
● 2017-04-08 07:37:30
● 2017-09-22 02:34:34
○ 2026-02-14 20:03:20
○ 2026-08-05 04:47:56
○A95.128.24.1882015-08-16 → 2017-01-28 · 4 obs
● 2015-08-16 21:48:34
● 2017-01-28 21:21:32
○ 2017-04-08 07:37:30
○ 2026-08-05 04:47:56

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dks.nic.dk, t.nic.dk, b.nic.dk, h.nic.dk...12 records
cert.dkmimer.deic.dk, orion.i2.dk, ns-soa.darenet.dk5 records

✅ Authoritative Response

Server:95.128.27.66

NS records: mimer.deic.dk, orion.i2.dk, ns-soa.darenet.dk

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 673ms | Queries: -

📄 Records

TypeCountSample Data
A1130.226.173.10
AAAA12001:878:0:e000:82:e2:ad:a
NS3ns-soa.darenet.dk, orion.i2.dk...
MX1cert-dk.mail.protection.outlook.com (pri
TXT5SOA=1783502815, v=spf1 include:spf.protection.outlook.co...
SOA1mimer.deic.dk dns.darenet.dk

📌 Glue Records Collected

Total: 17

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

Out-of-bailiwick: 5 (mimer.deic.dk, mimer.deic.dk, orion.i2.dk...)

Analysis

Hierarchy

Among the subdomains of cert.dk are host15.cert.dk, host14.cert.dk, host17.cert.dk, host05.cert.dk, host19.cert.dk and a few other host names.

IP Addresses

cert.dk has two IP addresses: 130.226.173.10 and 2001:878:0:e000:82:e2:ad:a

Further host names like webhotel5.deic.dk and www.cert.dk overlap in IP numbers with cert.dk.

Name Servers

cert.dk is served by three name servers: ns-soa.darenet.dk, mimer.deic.dk and orion.i2.dk.

There is at least partial name server overlap between cert.dk and other domains — splitdns.ait.dtu.dk, silkeborg-gym.dk, veug.dk and two more among them.

It is common to find these name servers alongside the name servers dns3.dtu.dk, dns1.dtu.dk, dns2.dtu.dk and two others.

Hostnames that resolve to two IP addresses:

The A records for ns-soa.darenet.dk return 130.226.179.50 and 2001:878:0:e000:82:e2:b3:32.

The A records for mimer.deic.dk return 95.128.27.66 and 2001:87f:ff27:65::66.

Hosts with just one IP address:

orion.i2.dk resolves to the IP address 78.153.182.90.

Mail Servers

Mail for cert.dk is handled by a single mail server, cert-dk.mail.protection.outlook.com.

cert-dk.mail.protection.outlook.com resolves to 8 IP addresses — 52.101.68.36, 52.101.73.2, 52.101.73.11 and 5 others.