sys.dk - dns.ninja

sys.dk

DNSSEC🔒 Signed (DS record present)
A164.90.229.31🇩🇪 DIGITALOCEAN164.90.224.0/20 DigitalOcean
PTRsys.dk
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
MXsys-dk.mail.protection.outlook.com ⭐
A2a01:111:f403:ca04::9🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-db7pr03cu00601.inbound.protection.outlook.com
A2a01:111:f403:ca04::b🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-dbbpr03cu00103.inbound.protection.outlook.com
A2a01:111:f403:ca04::e🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-db8pr02cu00106.inbound.protection.outlook.com
A2a01:111:f403:ca09::🇳🇱 Microsoft2a01:111:f000::/36
PTRmail-am3pr04cu00500.inbound.protection.outlook.com
A52.101.68.16🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-db4pr02cu00400.inbound.protection.outlook.com
A52.101.68.27🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-db7pr03cu00503.inbound.protection.outlook.com
A52.101.68.32🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-db3pr0202cu00200.inbound.protection.outlook.com
A52.101.73.22🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-am7pr05cu00106.inbound.protection.outlook.com
TXTMS=ms98249590
TXTMS=ms93764307
TXTv=spf1 include:spf.protection.outlook.com -all
TXTMS=ms28214030
TXTMS=ms96714545
SOAns01.one.comhostmaster@one.com 2026-03-25 #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 1782235621localtime Tue Jun 23 19:27:01 2026gmtime Tue Ju...
SOAb.nic.dktech@punktum.dk serial=1782235621

PTR for

31.229.90.164.in-addr.arpa

Same first word

sys.co
sys.edu.hk
sys.net.tr
sys.cat
sys.es
sys.sg
sys.ad
sys.com.tr
sys.bg
sys.com.pe
sys.eti.br
sys.zip
sys.net.ru
sys.team
sys.ph
sys.goiania.br
sys.mx
sys.rocks
sys.social
sys.hk
sys.run
sys.sale
sys.md
sys.lc
sys.gr
sys.com.au
sys.net.mx
sys.ee
sys.lt
sys.net.pl
sys.best
sys.tax
sys.ltd
sys.net.nz
sys.js.cn
sys.guru
sys.ca
sys.com.gt
sys.de
sys.by
sys.dp.ua
sys.eu
sys.nu
sys.or.kr
sys.be
sys.com.ua
sys.ch
sys.ie
sys.one
sys.yt
sys.co.at
sys.sx
sys.solar
sys.as
sys.space
sys.ws
sys.com
sys.cool
sys.network
sys.org
sys.im
sys.cl
sys.codes
sys.biz
sys.red
sys.it.com
sys.co.kr
sys.club
sys.mobi
sys.pub
sys.builders
sys.care
sys.academy
sys.email
sys.garden
sys.srv.br
sys.center
sys.ag
sys.lu
sys.hu
sys.ms
sys.kim
sys.zone
sys.ba
sys.schwarz
sys.dk
sys.net
sys.vn
sys.com.mx
sys.in
sys.pl
sys.com.co
sys.ge
sys.zapto.org
sys.nl
sys.co.il
sys.me
sys.co.nz
sys.host
sys.ac

Similar names

ssy.pl
yss.com.br
sys.cc
yss.sg
sys.se
yss.kr
ssy.ru
yss.cz
sys.co.jp
yss.co
sys.lv
sys.uz
sys.com.py
sys.co.tz
sys.ma
ssy.co
sys.si
yss.com.ua
ssy.com
yss.org
ssy.co.jp
ssy.mobi
ssy.cn.com
ssy.co.kr
ssy.us
ssy.asia
yss.no
yss.tv
yss.com.tr
yss.co.za
yss.info
yss.su
yss.ca
yss.mobi
yss.cn
yss.ac.th
yss.net
ssy.su
yss.com.tw
yss.org.uk
yss.dk
yss.co.th
yss.ch
ssy.hu
ssy.es
ssy.co.uk
yss.es
yss.co.il
ssy.de

DNS History

11 records (4 active, 7 former)

20162017201820192020202120222023202420252026NSns01.one.comns02.one.comns1.gratisdns.dkns2.gratisdns.dkns3.gratisdns.dkns4.gratisdns.dkns5.gratisdns.dkMXsys-dk.mail.protection.outlook.comA164.90.229.31193.88.99.14946.101.249.164
●NSns01.one.com2026-03-09 → 2026-06-23 · 3 obs
○ 2020-12-04 09:47:40
● 2026-03-09 08:18:26
● 2026-06-23 17:58:52
●NSns02.one.com2026-03-09 → 2026-06-23 · 3 obs
○ 2020-12-04 09:47:40
● 2026-03-09 08:18:26
● 2026-06-23 17:58:52
○NSns1.gratisdns.dk2015-08-29 → 2020-12-04 · 4 obs
● 2015-08-29 09:59:02
● 2020-12-04 09:47:40
○ 2026-03-09 08:18:26
○ 2026-06-23 17:58:52
○NSns2.gratisdns.dk2015-08-29 → 2020-12-04 · 4 obs
● 2015-08-29 09:59:02
● 2020-12-04 09:47:40
○ 2026-03-09 08:18:26
○ 2026-06-23 17:58:52
○NSns3.gratisdns.dk2015-08-29 → 2020-12-04 · 4 obs
● 2015-08-29 09:59:02
● 2020-12-04 09:47:40
○ 2026-03-09 08:18:26
○ 2026-06-23 17:58:52
○NSns4.gratisdns.dk2015-08-29 → 2020-12-04 · 4 obs
● 2015-08-29 09:59:02
● 2020-12-04 09:47:40
○ 2026-03-09 08:18:26
○ 2026-06-23 17:58:52
○NSns5.gratisdns.dk2015-08-29 → 2020-12-04 · 4 obs
● 2015-08-29 09:59:02
● 2020-12-04 09:47:40
○ 2026-03-09 08:18:26
○ 2026-06-23 17:58:52
●MXsys-dk.mail.protection.outlook.com2015-08-29 → 2026-06-23 · 2 obs
● 2015-08-29 09:59:02
● 2026-06-23 17:58:52
●A164.90.229.312026-03-09 → 2026-06-23 · 3 obs
○ 2020-12-04 09:47:40
● 2026-03-09 08:18:26
● 2026-06-23 17:58:52
○A193.88.99.1492015-08-29 → 2016-07-04 · 4 obs
● 2015-08-29 09:59:02
● 2016-07-04 04:58:14
○ 2016-09-25 17:18:56
○ 2026-06-23 17:58:52
○A46.101.249.1642016-09-25 → 2020-12-04 · 5 obs
○ 2016-07-04 04:58:14
● 2016-09-25 17:18:56
● 2020-12-04 09:47:40
○ 2026-03-09 08:18:26
○ 2026-06-23 17:58:52

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dkh.nic.dk, t.nic.dk, s.nic.dk, c.nic.dk...12 records
sys.dkns01.one.com, ns02.one.com-

✅ Authoritative Response

Server:195.206.121.10

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

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1198ms | Queries: -

📄 Records

TypeCountSample Data
A1164.90.229.31
NS2ns02.one.com, ns01.one.com
MX1sys-dk.mail.protection.outlook.com (pri:
TXT5v=spf1 include:spf.protection.outlook.co, MS=ms28214030...
SOA1ns01.one.com hostmaster.one.com

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

sys.dk has exactly one IP address — 164.90.229.31.

Name Servers

DNS delegation for sys.dk points to two name servers: ns01.one.com and ns02.one.com.

The name server configuration of sys.dk is shared with other domains, for instance meiers.dk, bohemen.no, bhd.no and two others.

ns01.one.com directs to 195.206.121.10 and 2001:67c:28cc::10. ns02.one.com directs to 185.10.11.10 and 2001:67c:3c0::10. Each host name carries two IP addresses.

Mail Servers

sys.dk uses one mail server — sys-dk.mail.protection.outlook.com.

sys-dk.mail.protection.outlook.com has 8 IP addresses: 52.101.68.16, 52.101.68.27, 52.101.68.32 plus 5 more.