`51codetest.com.cn`

DNSSEC	⚠️ Not signed
A	154.219.140.215^{🇭🇰 HDHK154.219.136.0/21 Proxy-registered route object}
NS	`dm1.longmingdns.com` ⭐
		A	218.98.111.163^{🇩🇪 HKCICL-AS-AP218.98.111.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED}
NS	`dm2.longmingdns.com`
		A	183.253.57.197^{🇨🇳 CHINAMOBILE-CN183.253.0.0/16 CMI (Customer Route)}
		A	211.99.99.56^{🇨🇳 DONGGUAN-1211.99.99.0/24 Proxy-registered route object}
SOA	`dm1.longmingdns.com`dnsadmin@longmingdns.com serial=1768463112

`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=2030482499

WOT: NOT_SAFE (20/100)

Same first word

51codetest.com.cn

DNS History

3 records (3 active, 0 former)

●NSdm1.longmingdns.com2026-03-27 → 2026-03-28 · 2 obs

● 2026-03-27 23:36:22
● 2026-03-28 13:01:06

●NSdm2.longmingdns.com2026-03-27 → 2026-03-28 · 2 obs

● 2026-03-27 23:36:22
● 2026-03-28 13:01:06

●A154.219.140.2152026-03-27 → 2026-03-28 · 2 obs

● 2026-03-27 23:36:22
● 2026-03-28 13:01:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
51codetest.com.cn	dm1.longmingdns.com, dm2.longmingdns.com	-

✅ Authoritative Response

Server:218.98.111.163

NS records: dm1.longmingdns.com, dm2.longmingdns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 51codetest.com.cn (unsigned zone)

⏱️ Timing

Total: 4951ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`154.219.140.215`
NS	2	`dm1.longmingdns.com, dm2.longmingdns.com`
SOA	1	`dm1.longmingdns.com dnsadmin.longmingdns`

Analysis

IP Addresses

51codetest.com.cn points to a single IP: 154.219.140.215.

Other host names, such as neax.com.cn, share IP numbers with 51codetest.com.cn.

Name Servers

Two name servers dm1.longmingdns.com and dm2.longmingdns.com handle delegation for 51codetest.com.cn.

51codetest.com.cn uses the same name server setup as other domains, for example ogubuku.cn, 91xxmm.cn, siyooglobe.com.cn, waitingmotel.cn and codes365.com.cn.

Host names with two IP numbers:

The host name dm2.longmingdns.com points to 183.253.57.197 and 211.99.99.56.

Host names with one IP number:

The host name dm1.longmingdns.com points to 218.98.111.163.

51codetest.com.cn - robtex.com