`51djbh.com`

DNSSEC	⚠️ Not signed
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	`mxbiz1.qq.com` ⭐
MX	`mxbiz2.qq.com`⁽¹⁰⁾
TXT	`MS=BE8A8B617682CB946C6F94DD585B0E28E13EE17A`
TXT	`v=spf1 include:spf.mail.qq.com ~all`
SOA	`dns15.hichina.com`hostmaster@hichina.com 2026-06-04 #13

`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=1784819247

Subdomains

www.51djbh.com

Same first word

51djbh.com

DNS History

5 records (4 active, 1 former)

●NSdns15.hichina.com2018-07-19 → 2026-07-23 · 2 obs

● 2018-07-19 07:03:42
● 2026-07-23 15:35:50

●NSdns16.hichina.com2018-07-19 → 2026-07-23 · 2 obs

● 2018-07-19 07:03:42
● 2026-07-23 15:35:50

●MXmxbiz1.qq.com2026-04-18 → 2026-07-23 · 2 obs

● 2026-04-18 03:34:52
● 2026-07-23 15:35:50

●MXmxbiz2.qq.com2026-04-18 → 2026-07-23 · 2 obs

● 2026-04-18 03:34:52
● 2026-07-23 15:35:50

○A47.92.166.332026-04-18 → 2026-04-18 · 2 obs

● 2026-04-18 03:34:52
○ 2026-07-23 15:35:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
51djbh.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 51djbh.com (unsigned zone)

⏱️ Timing

Total: 509ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns16.hichina.com, dns15.hichina.com`
MX	2	`mxbiz1.qq.com (pri: 5), mxbiz2.qq.com (pri: 10)`
TXT	2	`v=spf1 include:spf.mail.qq.com ~all, MS=BE8A8B617682CB946C6F94DD585B0E28E13EE`
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

51djbh.com is the parent zone for www.51djbh.com.

Name Servers

The NS records for 51djbh.com delegate to dns15.hichina.com and dns16.hichina.com.

51djbh.com shares its name server setup with other domains, including uk-bg.com, ourphp.net, woollen.net and two others.

51djbh.com has some name servers in common with other domains such as liushun.help, qzcnm.com and gowild.cn

Host names with 9 IP numbers:

dns15.hichina.com maps to 39.96.153.42, 39.96.153.52, 47.118.199.202 and 6 additional IP addresses.

dns16.hichina.com maps to 39.96.153.41, 39.96.153.51, 47.118.199.201 and 6 additional IP addresses.

Mail Servers

51djbh.com has two mail servers: mxbiz1.qq.com and mxbiz2.qq.com.

51djbh.com shares the same mail server setup as other domains, including quarknano.com, aiyahao.cn, ddmg.com and two others.

51djbh.com shares mail servers — at least in part — with other domains, including humka.com, gavinjiao.com, ueun.com and two others.

The mail servers mxw.mxhichina.com and mxbiz.vip.qq.com regularly co-occur with these mail servers.

51djbh.com - robtex.com

51djbh.com

com