`czslib.com`

DNSSEC	⚠️ Not signed
A	240e:d9:c200:10b:85b8::8c8^{🇨🇳 CHINANET-SCIDC-AS-AP240e:d9:c000::/36 SICHUANIDC province network}
A	112.28.77.190^{🇨🇳 CHINAMOBILE-CN112.28.64.0/20 CMI (Customer Route)}
NS	`ns11.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	`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}
			PTR	`ip-112-80-181-111.defastlink.net`
		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}
			PTR	`ip-163-177-5-23.defastlink.net`
TXT	`4b960261eded0f28c8232ca34eb249e514fd87c2d5f1b60ea03583f7547d0cf1`
SOA	`ns11.xincache.com`ns12@xincache.com serial=1693796842

`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=1776211287

Subdomains

www.czslib.com

Same first word

czslib.com

Similar names

szclib.org.cn

szblic.com

DNS History

9 records (5 active, 4 former)

●NSns11.xincache.com2015-07-12 → 2026-04-15 · 6 obs

● 2015-07-12 18:30:38
● 2016-04-26 18:36:28
○ 2017-02-10 00:30:58
○ 2018-10-18 06:29:56
● 2026-03-03 14:48:14
● 2026-04-15 00:22:08

○NSns12.xincache.com2015-07-12 → 2016-04-26 · 4 obs

● 2015-07-12 18:30:38
● 2016-04-26 18:36:28
○ 2017-02-10 00:30:58
○ 2026-04-15 00:22:08

●NSns19.xincache.com2017-02-10 → 2026-04-15 · 3 obs

○ 2016-04-26 18:36:28
● 2017-02-10 00:30:58
● 2026-04-15 00:22:08

●NSns20.xincache.com2017-02-10 → 2026-04-15 · 3 obs

○ 2016-04-26 18:36:28
● 2017-02-10 00:30:58
● 2026-04-15 00:22:08

○A103.30.42.1042015-07-12 → 2015-07-12 · 3 obs

● 2015-07-12 18:30:38
○ 2015-11-16 08:48:34
○ 2026-04-15 00:22:08

●A112.28.77.1902026-03-03 → 2026-04-15 · 3 obs

○ 2018-10-18 06:29:56
● 2026-03-03 14:48:14
● 2026-04-15 00:22:08

●A240e:d9:c200:10b:85b8::8c82026-03-03 → 2026-04-15 · 3 obs

○ 2018-10-18 06:29:56
● 2026-03-03 14:48:14
● 2026-04-15 00:22:08

○A60.175.166.2202017-02-10 → 2018-10-18 · 5 obs

○ 2016-04-26 18:36:28
● 2017-02-10 00:30:58
● 2018-10-18 06:29:56
○ 2026-03-03 14:48:14
○ 2026-04-15 00:22:08

○A61.191.55.102015-11-16 → 2016-04-26 · 5 obs

○ 2015-07-12 18:30:38
● 2015-11-16 08:48:34
● 2016-04-26 18:36:28
○ 2017-02-10 00:30:58
○ 2026-04-15 00:22:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, f.gtld-servers.net, m.gtld-servers.net, b.gtld-servers.net...	-
czslib.com	ns19.xincache.com, ns20.xincache.com	12 records

✅ Authoritative Response

Server:1.12.0.4

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for czslib.com (unsigned zone)

⏱️ Timing

Total: 142ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`112.28.77.190`
AAAA	1	`240e:d9:c200:10b:85b8::8c8`
NS	2	`ns19.xincache.com, ns20.xincache.com`
TXT	1	`4b960261eded0f28c8232ca34eb249e514fd87c2`
SOA	1	`ns11.xincache.com ns12.xincache.com`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (ns19.xincache.com, ns19.xincache.com, ns19.xincache.com...)

Analysis

Hierarchy

czslib.com is a parent of www.czslib.com.

IP Addresses

czslib.com points to two IP numbers: 240e:d9:c200:10b:85b8::8c8 and 112.28.77.190.

Other host names, for instance www.czslib.com, share IP numbers with czslib.com.

Name Servers

czslib.com is delegated to three name servers: ns11.xincache.com, ns19.xincache.com and ns20.xincache.com.

At least part of the name servers for czslib.com are shared with other domains, for instance tantoosports.com, xiangyuoliveoil.com, yklhlc.com, wxzitong.com and sirongvip.com.

These name servers are commonly used alongside ns12.xincache.com, ns15.xincache.com, ns16.xincache.com, ns13.xincache.com, ns14.xincache.com, ce1.xincache.com, ce2.xincache.com, ns17.xincache.com and ns18.xincache.com.

Host names with eight IP numbers: The host names ns11.xincache.com and ns19.xincache.com point to 2402:4e00:1470:2::e, 2402:4e00:1730::e, 1.12.0.4, 36.155.149.180, 112.80.181.45, 117.89.178.173, 125.94.59.210 and 129.211.176.209.

Host names with seven IP numbers: The host name ns20.xincache.com points to 2402:4e00:111:fff::c, 1.12.0.1, 36.155.149.176, 112.80.181.111, 117.89.178.184, 129.211.176.239 and 163.177.5.23.

Host names that point to any of 2402:4e00:1470:2::e, 2402:4e00:1730::e, 1.12.0.4, 36.155.149.180, 112.80.181.45, 117.89.178.173, 125.94.59.210 and 129.211.176.209 are ns11.xincache.com and ns19.xincache.com.

czslib.com - robtex.com

czslib.com

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