`51sqkb.com`

DNSSEC	⚠️ Not signed
A	182.92.113.38^{🇨🇳 Alibaba-Cloud182.92.0.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
NS	`dns15.hichina.com` ⭐
		A	2408:4009:501::23^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.42^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.52^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.202^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.212^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.42^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.52^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.112^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.122^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
NS	`dns16.hichina.com`
		A	2408:4009:501::24^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.41^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.51^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.201^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.211^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.41^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.51^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.111^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.121^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
MX	`mxn.mxhichina.com` ⭐
		A	47.246.136.231^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
			PTR	`cz-clare.com`
			PTR	`reachsmartdwell.com`
			PTR	`wevolt.tech`
		A	47.246.137.47^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
MX	`mxw.mxhichina.com`⁽¹⁰⁾
		A	47.246.99.195^{🇺🇸 Alibaba-Cloud47.246.96.0/22 Proxy-registered route object}
			PTR	`reachsmartdwell.com`
SOA	`dns15.hichina.com`hostmaster@hichina.com 2026-01-12 #9

`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=1776034647

Subdomains

www.51sqkb.com

Same first word

51sqkb.com

DNS History

6 records (5 active, 1 former)

●NSdns15.hichina.com2017-05-10 → 2026-04-12 · 2 obs

● 2017-05-10 13:52:28
● 2026-04-12 23:18:14

●NSdns16.hichina.com2017-05-10 → 2026-04-12 · 2 obs

● 2017-05-10 13:52:28
● 2026-04-12 23:18:14

●MXmxn.mxhichina.com2026-04-08 → 2026-04-12 · 2 obs

● 2026-04-08 11:51:56
● 2026-04-12 23:18:14

●MXmxw.mxhichina.com2026-04-08 → 2026-04-12 · 2 obs

● 2026-04-08 11:51:56
● 2026-04-12 23:18:14

○A123.57.207.582017-05-10 → 2017-05-10 · 3 obs

● 2017-05-10 13:52:28
○ 2026-04-08 11:51:56
○ 2026-04-12 23:18:14

●A182.92.113.382026-04-08 → 2026-04-12 · 3 obs

○ 2017-05-10 13:52:28
● 2026-04-08 11:51:56
● 2026-04-12 23:18:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, a.gtld-servers.net, j.gtld-servers.net, b.gtld-servers.net...	-
51sqkb.com	dns15.hichina.com, dns16.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.42

NS records: dns15.hichina.com, dns16.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 51sqkb.com (unsigned zone)

⏱️ Timing

Total: 614ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`182.92.113.38`
NS	2	`dns16.hichina.com, dns15.hichina.com`
MX	2	`mxn.mxhichina.com (pri: 5), mxw.mxhichina.com (pri: 10)`
SOA	1	`dns15.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns15.hichina.com, dns15.hichina.com, dns15.hichina.com...)

Analysis

Hierarchy

51sqkb.com is the parent of www.51sqkb.com.

IP Addresses

51sqkb.com points to a single IP number: 182.92.113.38.

Other host names, for instance www.51sqkb.com, xiaomingshi.com and bantangapp.com share IP numbers with 51sqkb.com.

Name Servers

51sqkb.com is delegated to two name servers: dns15.hichina.com and dns16.hichina.com.

51sqkb.com shares the same name server setup as other domains, for example enlighten-mind.tech, cuhco.com, water-faucet.cn, fxztech.com and chongdeedu.com.

51sqkb.com partially shares name servers with other domains, for instance linyoo.com, airoppo.com, hallmap.com and alec.cn.

These name servers are often used with ns1.alidns.com and ns2.alidns.com.

Host names with nine IP numbers:

dns15.hichina.com points to: 2408:4009:501::23, 39.96.153.42, 39.96.153.52, 47.118.199.202, 47.118.199.212, 120.76.107.42, 120.76.107.52, 139.224.142.112 and 139.224.142.122.

dns16.hichina.com points to: 2408:4009:501::24, 39.96.153.41, 39.96.153.51, 47.118.199.201, 47.118.199.211, 120.76.107.41, 120.76.107.51, 139.224.142.111 and 139.224.142.121.

Mail Servers

51sqkb.com is handled by two mail servers: mxn.mxhichina.com and mxw.mxhichina.com.

51sqkb.com shares the same mail server setup as other domains, for instance cherrymetalco.com, cdnkdq.com, yiis.top, obtdata.com and entireties.cn.

51sqkb.com shares mail servers with other domains at least partially, including lalawe.com, biotree.cn, railcomm.cn, saifu.cn and dfzd.com.

These mail servers are commonly used with mx1.qiye.aliyun.com, mx2.qiye.aliyun.com and mx3.qiye.aliyun.com.

Host names with two IP numbers: mxn.mxhichina.com points to 47.246.136.231 and 47.246.137.47.

Host names with one IP number: mxw.mxhichina.com points to 47.246.99.195.

51sqkb.com - robtex.com

51sqkb.com

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