`sb51.com.cn`

DNSSEC	⚠️ Not signed
A	177.211.173.34^{🇧🇷 UNSPECIFIED160.0.0.0/3}
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}
SOA	`dm1.longmingdns.com`dnsadmin@longmingdns.com serial=1774348932

`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=2030752405

WOT: NOT_SAFE (20/100)

Same first word

sb51.s3-us-west-2.amazonaws.com

sb51.cn

sb51.com.cn

Similar names

bs51.com

51sb.com.cn

15sb.com

15bs.com

51sb.life

15sb.net

DNS History

11 records (3 active, 8 former)

●NSdm1.longmingdns.com2026-02-21 → 2026-08-14 · 3 obs

○ 2016-11-23 07:09:28
● 2026-02-21 15:45:34
● 2026-08-14 06:11:08

●NSdm2.longmingdns.com2026-02-21 → 2026-08-14 · 3 obs

○ 2016-11-23 07:09:28
● 2026-02-21 15:45:34
● 2026-08-14 06:11:08

○NSns1.01isp.com2015-07-06 → 2016-02-08 · 4 obs

● 2015-07-06 16:55:38
● 2016-02-08 11:18:32
○ 2016-11-23 07:09:28
○ 2026-08-14 06:11:08

○NSns2.01isp.net2015-07-06 → 2016-02-08 · 4 obs

● 2015-07-06 16:55:38
● 2016-02-08 11:18:32
○ 2016-11-23 07:09:28
○ 2026-08-14 06:11:08

○MXmail.skrimple.com2016-11-01 → 2016-11-01 · 3 obs

● 2016-11-01 19:42:56
○ 2016-11-23 07:09:28
○ 2026-08-14 06:11:08

○A103.214.32.272026-02-21 → 2026-02-25 · 5 obs

○ 2016-11-23 07:09:28
● 2026-02-21 15:45:34
● 2026-02-25 00:00:56
○ 2026-03-17 07:49:36
○ 2026-08-14 06:11:08

○A103.232.215.1402016-11-01 → 2016-11-01 · 4 obs

○ 2016-02-08 11:18:32
● 2016-11-01 19:42:56
○ 2016-11-23 07:09:28
○ 2026-08-14 06:11:08

○A111.221.108.962015-11-11 → 2016-02-08 · 5 obs

○ 2015-07-06 16:55:38
● 2015-11-11 18:29:08
● 2016-02-08 11:18:32
○ 2016-11-01 19:42:56
○ 2026-08-14 06:11:08

○A174.128.228.1002015-07-06 → 2015-07-06 · 3 obs

● 2015-07-06 16:55:38
○ 2015-11-11 18:29:08
○ 2026-08-14 06:11:08

●A177.211.173.342026-05-16 → 2026-08-14 · 3 obs

○ 2026-03-17 07:49:36
● 2026-05-16 07:05:28
● 2026-08-14 06:11:08

○A45.203.77.1552026-03-17 → 2026-03-17 · 4 obs

○ 2026-02-25 00:00:56
● 2026-03-17 07:49:36
○ 2026-05-16 07:05:28
○ 2026-08-14 06:11:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
sb51.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 sb51.com.cn (unsigned zone)

⏱️ Timing

Total: 1890ms | Queries: -

📄 Records

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

Analysis

IP Addresses

sb51.com.cn points to a single IP number: 177.211.173.34.

Name Servers

Two name servers handle the delegation for sb51.com.cn: dm1.longmingdns.com and dm2.longmingdns.com.

sb51.com.cn shares its name server setup with other domains, including shtbl.cn, xianguqin.cn, vikj.com.cn and two others.

Host names with two IP numbers:

dm2.longmingdns.com resolves to two addresses: 183.253.57.197 and 211.99.99.56.

Host names pointing to a single IP address:

The hostname dm1.longmingdns.com resolves to 218.98.111.163.

sb51.com.cn - robtex.com

sb51.com.cn

com.cn