`techs.cn`

DNSSEC	⚠️ Not signed
A	218.57.138.161^{🇨🇳 CHINA169-Backbone218.56.0.0/15 CMI (Customer Route)}
NS	`ns19.xincache.com` ⭐
		A	2402:4e00:1470:2::e^{🇨🇳 TENCENT-NET-AP2402:4e00:1400::/40}
		A	2402:4e00:1730::e^{🇨🇳 TENCENT-NET-AP2402:4e00:1700::/40}
		A	1.12.0.4^{🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM}
		A	36.155.149.180^{🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)}
		A	112.80.181.45^{🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network}
		A	117.89.178.173^{🇨🇳 ChinaNet-NANJING-JISHAN-IDC117.89.176.0/21 JS-CT NJ-JS-IDC}
		A	125.94.59.210^{🇨🇳 CHINANET-BACKBONE125.88.0.0/13 chinanet Guangdong network}
		A	129.211.176.209^{🇨🇳 TENCENT-NET-AP129.211.176.0/20}
NS	`ns20.xincache.com`
		A	2402:4e00:111:fff::c^{🇨🇳 TENCENT-NET-AP2402:4e00::/35}
		A	1.12.0.1^{🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM}
		A	36.155.149.176^{🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)}
		A	112.80.181.111^{🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network}
		A	117.89.178.184^{🇨🇳 ChinaNet-NANJING-JISHAN-IDC117.89.176.0/21 JS-CT NJ-JS-IDC}
		A	129.211.176.239^{🇨🇳 TENCENT-NET-AP129.211.176.0/20}
		A	163.177.5.23^{🇨🇳 UNICOM-GuangZhou-IDC163.177.5.0/24}
SOA	`ns19.xincache.com`enterprise1dnsadmin@dnspod.com serial=1576647516

`cn`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.dns.cn` ⭐
	NS	`b.dns.cn`
	NS	`c.dns.cn`
	NS	`d.dns.cn`
	NS	`e.dns.cn`
	NS	`ns.cernet.net` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn 2035-06-02 #17

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DNS History

5 records (3 active, 2 former)

○NSns17.xincache.com2015-08-22 → 2016-09-15 · 4 obs

● 2015-08-22 00:12:24
● 2016-09-15 16:52:28
○ 2017-04-07 00:14:06
○ 2026-07-19 11:45:44

○NSns18.xincache.com2015-08-22 → 2016-09-15 · 4 obs

● 2015-08-22 00:12:24
● 2016-09-15 16:52:28
○ 2017-04-07 00:14:06
○ 2026-07-19 11:45:44

●NSns19.xincache.com2017-04-07 → 2026-07-19 · 3 obs

○ 2016-09-15 16:52:28
● 2017-04-07 00:14:06
● 2026-07-19 11:45:44

●NSns20.xincache.com2017-04-07 → 2026-07-19 · 3 obs

○ 2016-09-15 16:52:28
● 2017-04-07 00:14:06
● 2026-07-19 11:45:44

●A218.57.138.1612015-08-22 → 2026-07-19 · 2 obs

● 2015-08-22 00:12:24
● 2026-07-19 11:45:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	b.dns.cn, d.dns.cn, a.dns.cn, c.dns.cn...	-
techs.cn	ns19.xincache.com, ns20.xincache.com	-

✅ Authoritative Response

Server:36.155.149.176

NS records: ns19.xincache.com, ns20.xincache.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for techs.cn (unsigned zone)

⏱️ Timing

Total: 1137ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`218.57.138.161`
NS	2	`ns20.xincache.com, ns19.xincache.com`
SOA	1	`ns19.xincache.com enterprise1dnsadmin.dn`

Analysis

IP Addresses

techs.cn points to a single IP number: 218.57.138.161.

Name Servers

techs.cn uses two name servers for its delegation: ns19.xincache.com and ns20.xincache.com.

techs.cn shares its name server setup with other domains, including hiexcel.com, egi.ac.cn, fjpub.com and two others.

At least some of techs.cn's name servers are shared with other domains, for example hpeaie.org, baiheplastic.com, ubains.com and two more.

These name servers tend to be deployed in combination with the name servers ns11.xincache.com and ns12.xincache.com.

Host names with 8 IP numbers:

Hostname ns19.xincache.com directs to 1.12.0.4, 36.155.149.180 and 112.80.181.45 along with 5 other IP addresses.

Host names with 7 IP numbers:

Hostname ns20.xincache.com directs to 1.12.0.1, 36.155.149.176 and 112.80.181.111 along with 4 other IP addresses.

techs.cn - robtex.com

techs.cn

cn