`51csit.com`

DNSSEC	⚠️ Not signed
A	114.67.76.101^{🇨🇳 SHANGHAITELECOM114.67.64.0/18 Chinaunicom Shanghai IDC}
NS	`dns.bizcn.com` ⭐
		A	240c:4082:ffff:ff01:0:d:0:34a^{🇨🇳 Baidu240c:4082::/32}
		A	61.172.183.76^{🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC}
		A	61.240.129.114^{🇨🇳 CHINA169-Backbone61.240.128.0/19 CMI (Customer Route)}
NS	`ns1.dns.com.cn`
		A	240c:4082:ffff:ff01:0:d:0:34a^{🇨🇳 Baidu240c:4082::/32}
		A	61.172.183.70^{🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC}
		A	61.240.129.114^{🇨🇳 CHINA169-Backbone61.240.128.0/19 CMI (Customer Route)}
NS	`ns2.dns.com.cn`
		A	240c:4082:ffff:ff01:0:d:0:69^{🇨🇳 Baidu240c:4082::/32}
		A	61.172.183.76^{🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC}
		A	61.240.129.147^{🇨🇳 CHINA169-Backbone61.240.128.0/19 CMI (Customer Route)}
MX	`mx2.dns.com.cn` ⭐
		A	114.67.251.227^{🇨🇳 CHINA169-BJ114.67.224.0/19 China Telecom Beijing Co. Ltd.}
			PTR	`mx69.dns.com.cn`
TXT	`google-site-verification=dd3_SDWoQmalZJi5S9RyKY-O6HEJzEvQtQtOqyVfP4w`
TXT	`v=spf1 include:spf.dns.com.cn include:spf.icoremail.net -all`
SOA	`dns.bizcn.com`abuse@bizcn.com serial=11

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1774551477

Same first word

51csit.com

DNS History

10 records (5 active, 5 former)

●NSdns.bizcn.com2017-03-13 → 2026-03-26 · 3 obs

○ 2016-07-04 01:29:42
● 2017-03-13 11:33:16
● 2026-03-26 19:26:10

●NSns1.dns.com.cn2015-11-18 → 2026-03-26 · 3 obs

○ 2015-07-17 23:44:24
● 2015-11-18 00:54:08
● 2026-03-26 19:26:10

●NSns2.dns.com.cn2015-07-17 → 2026-03-26 · 5 obs

● 2015-07-17 23:44:24
● 2016-07-04 01:29:42
○ 2017-03-13 11:33:16
● 2020-02-16 09:10:52
● 2026-03-26 19:26:10

●MXmx2.dns.com.cn2015-11-18 → 2026-03-26 · 2 obs

● 2015-11-18 00:54:08
● 2026-03-26 19:26:10

●A114.67.76.1012026-03-17 → 2026-03-26 · 3 obs

○ 2026-02-27 12:22:58
● 2026-03-17 05:54:02
● 2026-03-26 19:26:10

○A119.8.31.2342026-02-24 → 2026-02-27 · 5 obs

○ 2020-02-16 09:10:52
● 2026-02-24 03:42:02
● 2026-02-27 12:22:58
○ 2026-03-17 05:54:02
○ 2026-03-26 19:26:10

○A122.70.138.2252015-07-17 → 2015-07-17 · 3 obs

● 2015-07-17 23:44:24
○ 2026-02-24 03:42:02
○ 2026-03-26 19:26:10

○A180.76.193.812017-03-13 → 2017-03-13 · 4 obs

○ 2016-07-04 01:29:42
● 2017-03-13 11:33:16
○ 2020-02-16 09:10:52
○ 2026-03-26 19:26:10

○A180.76.196.132020-02-16 → 2020-02-16 · 4 obs

○ 2017-03-13 11:33:16
● 2020-02-16 09:10:52
○ 2026-02-24 03:42:02
○ 2026-03-26 19:26:10

○A42.236.81.2192015-11-18 → 2016-07-04 · 5 obs

○ 2015-07-17 23:44:24
● 2015-11-18 00:54:08
● 2016-07-04 01:29:42
○ 2017-03-13 11:33:16
○ 2026-03-26 19:26:10

🔍 DNS Trace

Analysis

IP Addresses

51csit.com points to an IP address: 114.67.76.101.

Other host names, such as www.3io.com.cn, 3io.com.cn and 51cse.com, share IP numbers with 51csit.com.

Name Servers

51csit.com is delegated to three name servers dns.bizcn.com, ns1.dns.com.cn and ns2.dns.com.cn.

51csit.com at least partially shares name servers with other domains, for instance topsmake.cn, hoorayfreight.com, xunjie.org, smhx.com and xtron.cn.

these name servers are commonly used alongside the name servers ns7.cnmsn.net, ns8.cnmsn.net, dns.cnmsn.net, ns13.dns.com.cn, ns14.dns.com.cn, ns5.cnmsn.net and ns6.cnmsn.net.

Host names with three IP numbers

Host dns.bizcn.com points to 240c:4082:ffff:ff01:0:d:0:34a, 61.172.183.76 and 61.240.129.114

Host ns1.dns.com.cn points to 240c:4082:ffff:ff01:0:d:0:34a, 61.172.183.70 and 61.240.129.114

Host ns2.dns.com.cn points to 240c:4082:ffff:ff01:0:d:0:69, 61.172.183.76 and 61.240.129.147

Names pointing to 240c:4082:ffff:ff01:0:d:0:34a: dns.bizcn.com and ns1.dns.com.cn

Names pointing to 61.172.183.76: dns.bizcn.com and ns2.dns.com.cn

Names pointing to 61.240.129.114: dns.bizcn.com and ns1.dns.com.cn

Mail Servers

51csit.com is handled by a single mail server, mx2.dns.com.cn.

51csit.com uses the same mail server setup as other domains, for instance ibilling.com.cn, ycpm.cn, finedo.net, yzsx119.com and sqdlgg.com.

51csit.com shares some mail servers with other domains, including profibus-factory.com, lyzlyq.com, dfgs.cn and aew.com.cn.

The host name mx2.dns.com.cn points to IP 114.67.251.227.

51csit.com - robtex.com

51csit.com

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