`yz-csic.com`

DNSSEC	⚠️ Not signed
A	121.42.115.84^{🇨🇳 Alibaba-Cloud121.42.64.0/18}
NS	`ns1.cnolnic.com` ⭐
		A	240c:4082:0:5d01::4^{🇨🇳 Baidu240c:4082::/32}
		A	106.12.208.18^{🇨🇳 Baidu106.12.208.0/20 AS38365}
		A	218.5.79.117^{🇨🇳 CHINATELECOM-Fujian-Xiamen-IDC1218.5.72.0/21 厦门}
NS	`ns2.cnolnic.com`
		A	240c:4082:0:5d01::5^{🇨🇳 Baidu240c:4082::/32}
		A	106.12.205.190^{🇨🇳 Baidu106.12.192.0/20 AS38365}
		A	106.13.49.3^{🇨🇳 Baidu106.13.48.0/20 AS38365}
SOA	`ns1.cnolnic.com`root@cnolnic.com 2006-11-24 #1

`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=1776196512

Subdomains

www.yz-csic.com

Same first word

yz-csic.com

DNS History

4 records (3 active, 1 former)

○NSmycom-426d708222015-07-14 → 2017-01-03 · 4 obs

● 2015-07-14 01:54:26
● 2017-01-03 22:49:58
○ 2026-02-23 05:57:52
○ 2026-04-14 19:56:18

●NSns1.cnolnic.com2026-02-23 → 2026-04-14 · 3 obs

○ 2017-01-03 22:49:58
● 2026-02-23 05:57:52
● 2026-04-14 19:56:18

●NSns2.cnolnic.com2026-02-23 → 2026-04-14 · 3 obs

○ 2017-01-03 22:49:58
● 2026-02-23 05:57:52
● 2026-04-14 19:56:18

●A121.42.115.842026-02-23 → 2026-04-14 · 2 obs

● 2026-02-23 05:57:52
● 2026-04-14 19:56:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, e.gtld-servers.net, m.gtld-servers.net, d.gtld-servers.net...	-
yz-csic.com	ns1.cnolnic.com, ns2.cnolnic.com	6 records

✅ Authoritative Response

Server:106.12.205.190

NS records: ns1.cnolnic.com, ns2.cnolnic.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for yz-csic.com (unsigned zone)

⏱️ Timing

Total: 851ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`121.42.115.84`
NS	2	`ns1.cnolnic.com, ns2.cnolnic.com`
SOA	1	`ns1.cnolnic.com root.cnolnic.com`

📌 Glue Records Collected

Total: 6

Out-of-bailiwick: 6 (ns1.cnolnic.com, ns1.cnolnic.com, ns1.cnolnic.com...)

Analysis

Hierarchy

www.yz-csic.com has yz-csic.com as its parent.

IP Addresses

yz-csic.com maps to IP address 121.42.115.84.

Other host names, for example, www.yz-csic.com share IP numbers with yz-csic.com.

Name Servers

Two name servers ns1.cnolnic.com and ns2.cnolnic.com are delegated to yz-csic.com.

yz-csic.com uses the same name server configuration as other domains, such as hnhyafkj.com, xzcet.com, xs21.com, zhcw.cn and cglxw.com.

yz-csic.com shares some name servers with other domains, for example sllxj.cn.

Host names with three IP numbers:

ns1.cnolnic.com points to 240c:4082:0:5d01::4, 106.12.208.18 and 218.5.79.117; ns2.cnolnic.com points to 240c:4082:0:5d01::5, 106.12.205.190 and 106.13.49.3.

yz-csic.com - robtex.com

yz-csic.com

com