`jrsys.dk`

DNSSEC	⚠️ Not signed
A	217.116.232.209^{🇩🇰 SENTIA217.116.224.0/20}
NS	`ns1.gigahost.dk` ⭐
		A	46.183.139.31^{🇩🇰 SENTIA46.183.139.0/24}
NS	`ns2.gigahost.dk`
		A	46.183.139.222^{🇩🇰 SENTIA46.183.139.0/24}
			PTR	`web22.gigahost.dk`
NS	`ns3.gigahost.dk`
		A	71.19.249.71^{🇨🇦 ESECUREDATACOM-171.19.249.0/24 eSecureData.com Inc.}
NS	`ns4.gigahost.dk`
		A	51.79.215.130^{🇸🇬 OVH51.79.128.0/17 Hosting route}
			PTR	`ns4.gigahost.dk`
NS	`ns5.gigahost.dk`
		A	77.74.192.83^{🇬🇧 UKSERVERS-AS77.74.192.0/21 UK Dedicated Servers Limited}
			PTR	`ns5.gigahost.dk`
MX	`jrsys-dk.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::b^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-dbbpr03cu00103.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am3pr04cu00500.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::4^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am0pr04cu00504.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::f^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am7pr05cu00307.inbound.protection.outlook.com`
		A	52.101.68.0^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db3pr0202cu00100.inbound.protection.outlook.com`
		A	52.101.68.36^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db5pr02cu00104.inbound.protection.outlook.com`
		A	52.101.73.1^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am3pr04cu00501.inbound.protection.outlook.com`
		A	52.101.73.8^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am0pr04cu00500.inbound.protection.outlook.com`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
TXT	`MS=ms49535946`
SOA	`ns1.gigahost.dk`hostmaster@jrsys.dk 2026-03-26 #1

`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 1774723681localtime Sat Mar 28 19:48:01 2026gmtime Sat Ma...`
	SOA	`b.nic.dk`tech@punktum.dk serial=1774723681

Same first word

jrsys.com.tw

jrsys.dk

Similar names

srjys.com

rsyjs.com

ssyjr.com

jsrsy.cn

syrsj.com

DNS History

9 records (7 active, 2 former)

●NSns1.gigahost.dk2015-07-18 → 2026-03-28 · 2 obs

● 2015-07-18 05:54:44
● 2026-03-28 19:15:34

●NSns2.gigahost.dk2015-07-18 → 2026-03-28 · 2 obs

● 2015-07-18 05:54:44
● 2026-03-28 19:15:34

●NSns3.gigahost.dk2015-07-18 → 2026-03-28 · 2 obs

● 2015-07-18 05:54:44
● 2026-03-28 19:15:34

●NSns4.gigahost.dk2015-07-18 → 2026-03-28 · 2 obs

● 2015-07-18 05:54:44
● 2026-03-28 19:15:34

●NSns5.gigahost.dk2015-07-18 → 2026-03-28 · 2 obs

● 2015-07-18 05:54:44
● 2026-03-28 19:15:34

○MXbackup-mx.post.tele.dk2015-07-18 → 2017-10-06 · 4 obs

● 2015-07-18 05:54:44
● 2017-10-06 10:50:54
○ 2026-02-22 00:36:32
○ 2026-03-28 19:15:34

●MXjrsys-dk.mail.protection.outlook.com2026-02-22 → 2026-03-28 · 3 obs

○ 2017-10-06 10:50:54
● 2026-02-22 00:36:32
● 2026-03-28 19:15:34

○MXmail.jrsys.dk2015-07-18 → 2017-10-06 · 4 obs

● 2015-07-18 05:54:44
● 2017-10-06 10:50:54
○ 2026-02-22 00:36:32
○ 2026-03-28 19:15:34

●A217.116.232.2092015-07-18 → 2026-03-28 · 2 obs

● 2015-07-18 05:54:44
● 2026-03-28 19:15:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dk	b.nic.dk, h.nic.dk, t.nic.dk, c.nic.dk...	-
jrsys.dk	ns1.gigahost.dk, ns2.gigahost.dk, ns3.gigahost.dk, ns4.gigahost.dk...	5 records

✅ Authoritative Response

Server:51.79.215.130

NS records: ns1.gigahost.dk, ns2.gigahost.dk, ns3.gigahost.dk, ns4.gigahost.dk, ns5.gigahost.dk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for jrsys.dk (unsigned zone)

⏱️ Timing

Total: 679ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`217.116.232.209`
NS	5	`ns4.gigahost.dk, ns2.gigahost.dk...`
MX	1	`jrsys-dk.mail.protection.outlook.com (pr`
TXT	2	`v=spf1 include:spf.protection.outlook.co, MS=ms49535946`
SOA	1	`ns1.gigahost.dk hostmaster.jrsys.dk`

📌 Glue Records Collected

Total: 5

Out-of-bailiwick: 5 (ns1.gigahost.dk, ns2.gigahost.dk, ns3.gigahost.dk...)

Analysis

IP Addresses

jrsys.dk points to IP number 217.116.232.209.

For instance, other host names 2lander.dk, reweb.dk, cyklon.dk, cmp-company.com and evitaperoni.dk share IP numbers with jrsys.dk.

Name Servers

jrsys.dk is delegated to five name servers: ns1.gigahost.dk, ns2.gigahost.dk, ns3.gigahost.dk, ns4.gigahost.dk and ns5.gigahost.dk.

jrsys.dk shares name servers with other domains at least partially, for example psykologcoach.dk, mce2.dk, midtgolfcenter.dk, danielw.net and arkiv.biz.