`21information.com.cn`

DNSSEC	⚠️ Not signed
NS	`ns1.nowcndns.com` ⭐
		A	1.193.216.204^{🇨🇳 CHINANET-Henan-Luoyang-IDC1.193.216.0/24 Chinatelecom HeNan Province Network}
		A	218.98.111.129^{🇩🇪 HKCICL-AS-AP218.98.111.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED}
		A	218.98.111.138^{🇩🇪 HKCICL-AS-AP218.98.111.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED}
NS	`ns2.nowcndns.com`
		A	61.158.128.11^{🇨🇳 CHINA169-Backbone61.158.128.0/17 CNC Group CHINA169 Henan Province Network}
			PTR	`11.128.158.61.ha.cnc`
		A	183.253.57.202^{🇨🇳 CHINAMOBILE-CN183.253.0.0/16 CMI (Customer Route)}
		A	211.99.99.38^{🇨🇳 DONGGUAN-1211.99.99.0/24}
SOA	`ns1.nowcndns.com`admin@nowcndns.com serial=1781357589

`com.cn`

	DNSSEC	⚠️ Not signed
	NS	`a.dns.cn` ⭐ ⚠️ Not in parent delegation
	NS	`b.dns.cn` ⚠️ Not in parent delegation
	NS	`c.dns.cn` ⚠️ Not in parent delegation
	NS	`cns.cernet.net` ⚠️ Not in parent delegation
	NS	`d.dns.cn` ⚠️ Not in parent delegation
	NS	`e.dns.cn` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn serial=2030745943

WOT: NOT_SAFE (20/100)

Same first word

21information.com.cn

DNS History

5 records (2 active, 3 former)

○NSnow1.dns.com2026-07-02 → 2026-08-10 · 2 obs

○ 2026-07-02 07:15:52
○ 2026-08-10 22:19:54

○NSnow2.dns.com2026-07-02 → 2026-08-10 · 2 obs

○ 2026-07-02 07:15:52
○ 2026-08-10 22:19:54

●NSns1.nowcndns.com2026-07-02 → 2026-08-10 · 2 obs

● 2026-07-02 07:15:52
● 2026-08-10 22:19:54

●NSns2.nowcndns.com2026-07-02 → 2026-08-10 · 2 obs

● 2026-07-02 07:15:52
● 2026-08-10 22:19:54

○A108.186.95.1762026-07-02 → 2026-08-10 · 2 obs

○ 2026-07-02 07:15:52
○ 2026-08-10 22:19:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
21information.com.cn	ns1.nowcndns.com, ns2.nowcndns.com	-

✅ Authoritative Response

Server:1.193.216.204

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21information.com.cn (unsigned zone)

⏱️ Timing

Total: 1822ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`ns1.nowcndns.com, ns2.nowcndns.com`
SOA	1	`ns1.nowcndns.com admin.nowcndns.com`

Analysis

Name Servers

21information.com.cn uses two name servers for its delegation: ns1.nowcndns.com and ns2.nowcndns.com.

21information.com.cn uses the same name servers as several other domains — among them masterclub.cn, cnhddv.cn, tqjkx.cn and two more.

ns1.nowcndns.com and ns2.nowcndns.com each resolve to three IP addresses. ns1.nowcndns.com resolves to 1.193.216.204, 218.98.111.129 and 218.98.111.138. ns2.nowcndns.com resolves to 61.158.128.11, 183.253.57.202 and 211.99.99.38.

21information.com.cn - robtex.com