`csys.co`

DNSSEC	⚠️ Not signed
A	20.165.56.172^{🇺🇸 Microsoft20.160.0.0/12 MICROSOFT}
NS	`ns1-01.azure-dns.com` ⭐
		A	2603:1061:0:700::1^{🇺🇸 Microsoft2603:1000::/25 MICROSOFT}
			PTR	`ns1-01.azure-dns.com`
		A	13.107.236.1^{🇺🇸 Microsoft13.104.0.0/14 MICROSOFT}
			PTR	`ns1-01.azure-dns.com`
NS	`ns2-01.azure-dns.net`
		A	2620:1ec:8ec:700::1^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns2-01.azure-dns.net`
		A	150.171.21.1^{🇺🇸 Microsoft150.171.0.0/16 MICROSOFT}
			PTR	`ns2-01.azure-dns.net`
NS	`ns3-01.azure-dns.org`
		A	2a01:111:4000:700::1^{🇬🇧 Microsoft2a01:111:4000::/36}
			PTR	`ns3-01.azure-dns.org`
		A	204.14.183.1^{🇺🇸 Microsoft204.14.180.0/22}
			PTR	`ns3-01.azure-dns.org`
NS	`ns4-01.azure-dns.info`
		A	2620:1ec:bda:700::1^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns4-01.azure-dns.info`
		A	208.84.5.1^{🇺🇸 Microsoft208.84.0.0/21 MICROSOFT}
			PTR	`ns4-01.azure-dns.info`
MX	`csys-co.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c902::5^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sj2pr05cu00505.inbound.protection.outlook.com`
		A	2a01:111:f403:c946::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-ch4pr04cu00102.inbound.protection.outlook.com`
		A	2a01:111:f403:c946::6^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-ch5pr02cu00406.inbound.protection.outlook.com`
		A	2a01:111:f403:f802::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-byapr05cu00400.inbound.protection.outlook.com`
		A	52.101.10.12^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bn1pr21cu00204.inbound.protection.outlook.com`
		A	52.101.11.3^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sn1pr0501cu00103.inbound.protection.outlook.com`
		A	52.101.42.16^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-co1pr05cu00300.inbound.protection.outlook.com`
		A	52.101.50.10^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-mw2pr02cu00502.inbound.protection.outlook.com`
TXT	`MS=ms81215321`
SOA	`ns1-01.azure-dns.com`azuredns-hostmaster@microsoft.com serial=1

`co`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns0.centralnic.net` ⭐
	NS	`a.registrydns.co`
	NS	`b.registrydns.co`
	NS	`c.registrydns.co`
	NS	`d.registrydns.co`
	SOA	`ns0.centralnic.net`hostmaster@centralnic.net serial=1759618737

Same first word

csys.biz

csys.org

csys.hu

csys.com

csys.de

csys.ch

csys.eu

csys.ru

csys.pro

csys.co.uk

csys.it

csys.com.hk

csys.mobi

csys.no

csys.gmbh

csys.ae

csys.net

csys.cz

csys.co.jp

csys.io

csys.co

csys.com.cn

csys.com.tn

Similar names

sysc.co.jp

cssy.cn

ycss.de

ycss.cn

sysc.de

cyss.de

sscy.com

scys.com

sscy.org

cssy.net

sysc.com

yssc.org

yscs.jp

ssyc.co.kr

cyss.us

sysc.tempurl.host

ssyc.org

cyss.mx

sysc.ru

cssy.com.cn

sscy.synology.me

ssyc.cn

ycss.org

sycs.co.kr

cyss.com.br

yssc.ca

yscs.org

ssyc.net

cyss.jp

sscy.net.cn

sysc.com.au

scys.gov.bh

ycss.com.au

sysc.cn

sysc.org

scsy.net

scys.cl

scys.net

sysc.net.cn

sycs.com

sysc.net

yssc.co.uk

cssy.org

scsy.org

sycs.de

sscy.net

sysc.jp

sycs.com.tr

yssc.com

scys.org.cn

sscy.ca

sysc.ro

cyss.cn

cyss.org

yscs.co.kr

sysc.eu

scsy.de

scsy.com

ycss.edu.sg

ycss.it

ssyc.us

sysc.com.br

DNS History

13 records (6 active, 7 former)

●NSns1-01.azure-dns.com2026-03-26 → 2026-03-26 · 3 obs

○ 2017-06-01 13:17:30
● 2026-03-26 00:23:10
● 2026-03-26 14:40:10

○NSns1.dn(0x736578)it.com2015-10-28 → 2017-06-01 · 9 obs

● 2015-10-28 07:57:58
● 2016-01-07 03:33:24
○ 2016-01-16 04:51:20
○ 2016-05-16 04:59:30
● 2016-05-23 08:38:56
○ 2016-07-10 06:13:14
● 2017-06-01 13:17:30
○ 2026-03-26 00:23:10
○ 2026-03-26 14:40:10

●NSns2-01.azure-dns.net2026-03-26 → 2026-03-26 · 3 obs

○ 2017-06-01 13:17:30
● 2026-03-26 00:23:10
● 2026-03-26 14:40:10

○NSns2.dn(0x736578)it.com2015-10-28 → 2017-06-01 · 7 obs

● 2015-10-28 07:57:58
● 2016-05-16 04:59:30
○ 2016-05-23 08:38:56
● 2016-07-10 06:13:14
● 2017-06-01 13:17:30
○ 2026-03-26 00:23:10
○ 2026-03-26 14:40:10

●NSns3-01.azure-dns.org2026-03-26 → 2026-03-26 · 3 obs

○ 2017-06-01 13:17:30
● 2026-03-26 00:23:10
● 2026-03-26 14:40:10

○NSns3.dn(0x736578)it.com2015-10-28 → 2017-06-01 · 4 obs

● 2015-10-28 07:57:58
● 2017-06-01 13:17:30
○ 2026-03-26 00:23:10
○ 2026-03-26 14:40:10

●NSns4-01.azure-dns.info2026-03-26 → 2026-03-26 · 3 obs

○ 2017-06-01 13:17:30
● 2026-03-26 00:23:10
● 2026-03-26 14:40:10

○NSns4.dn(0x736578)it.com2015-10-28 → 2017-06-01 · 4 obs

● 2015-10-28 07:57:58
● 2017-06-01 13:17:30
○ 2026-03-26 00:23:10
○ 2026-03-26 14:40:10

●MXcsys-co.mail.protection.outlook.com2015-10-28 → 2026-03-26 · 2 obs

● 2015-10-28 07:57:58
● 2026-03-26 14:40:10

○MXms81215321.msv1.invalid2015-10-28 → 2017-06-01 · 4 obs

● 2015-10-28 07:57:58
● 2017-06-01 13:17:30
○ 2026-03-26 00:23:10
○ 2026-03-26 14:40:10

●A20.165.56.1722026-03-26 → 2026-03-26 · 3 obs

○ 2017-06-01 13:17:30
● 2026-03-26 00:23:10
● 2026-03-26 14:40:10

○A45.27.166.1122015-12-16 → 2017-06-01 · 5 obs

○ 2015-10-28 07:57:58
● 2015-12-16 00:16:14
● 2017-06-01 13:17:30
○ 2026-03-26 00:23:10
○ 2026-03-26 14:40:10

○A66.169.167.212015-10-28 → 2015-10-28 · 3 obs

● 2015-10-28 07:57:58
○ 2015-12-16 00:16:14
○ 2026-03-26 14:40:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
co	a.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co	-
csys.co	ns4-01.azure-dns.info, ns1-01.azure-dns.com, ns2-01.azure-dns.net, ns3-01.azure-dns.org	-

✅ Authoritative Response

Server:208.84.5.1

NS records: ns4-01.azure-dns.info, ns1-01.azure-dns.com, ns2-01.azure-dns.net, ns3-01.azure-dns.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for csys.co (unsigned zone)

⏱️ Timing

Total: 443ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`20.165.56.172`
NS	4	`ns1-01.azure-dns.com, ns2-01.azure-dns.net...`
MX	1	`csys-co.mail.protection.outlook.com (pri`
TXT	1	`MS=ms81215321`
SOA	1	`ns1-01.azure-dns.com azuredns-hostmaster`