`51helpdesk.com`

DNSSEC	⚠️ Not signed
A	101.132.185.91^{🇨🇳 Alibaba-Cloud101.132.0.0/16 Alibaba (US) Technology Co., Ltd.}
NS	`dns7.hichina.com` ⭐
		A	2408:4009:501::15^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.43^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-43.defastlink.net`
		A	39.96.153.63^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-63.defastlink.net`
		A	47.118.199.203^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-203.defastlink.net`
		A	47.118.199.213^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-213.defastlink.net`
		A	120.76.107.43^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-43.defastlink.net`
		A	120.76.107.63^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-63.defastlink.net`
		A	139.224.142.113^{🇨🇳 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,}
			PTR	`ip-139-224-142-113.defastlink.net`
		A	139.224.142.123^{🇨🇳 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,}
			PTR	`ip-139-224-142-123.defastlink.net`
NS	`dns8.hichina.com`
		A	2408:4009:501::16^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.44^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-44.defastlink.net`
		A	39.96.153.54^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-54.defastlink.net`
		A	47.118.199.204^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-204.defastlink.net`
		A	47.118.199.214^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-214.defastlink.net`
		A	120.76.107.44^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-44.defastlink.net`
		A	120.76.107.54^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-54.defastlink.net`
		A	139.224.142.114^{🇨🇳 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,}
			PTR	`ip-139-224-142-114.defastlink.net`
		A	139.224.142.124^{🇨🇳 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,}
			PTR	`ip-139-224-142-124.defastlink.net`
MX	`qiye163mx01.mxmail.netease.com` ⭐
		A	47.251.71.119^{🇺🇸 Alibaba-Cloud47.251.0.0/17 Proxy-registered route object}
		A	47.251.84.126^{🇺🇸 Alibaba-Cloud47.251.0.0/17 Proxy-registered route object}
MX	`qiye163mx02.mxmail.netease.com` ⭐
		A	47.251.71.119^{🇺🇸 Alibaba-Cloud47.251.0.0/17 Proxy-registered route object}
		A	47.251.84.126^{🇺🇸 Alibaba-Cloud47.251.0.0/17 Proxy-registered route object}
TXT	`v=spf1 include:spf.163.com -all`
SOA	`dns7.hichina.com`hostmaster@hichina.com 2026-01-09 #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=1771291435

Same first word

51helpdesk.com

DNS History

16 records (5 active, 11 former)

●NSdns7.hichina.com2026-02-17 → 2026-03-15 · 3 obs

○ 2017-06-14 21:02:46
● 2026-02-17 21:31:46
● 2026-03-15 22:03:30

●NSdns8.hichina.com2026-02-17 → 2026-03-15 · 3 obs

○ 2017-06-14 21:02:46
● 2026-02-17 21:31:46
● 2026-03-15 22:03:30

○NSns1.myhostadmin.net2015-07-06 → 2017-06-14 · 4 obs

● 2015-07-06 05:51:28
● 2017-06-14 21:02:46
○ 2026-02-17 21:31:46
○ 2026-03-15 22:03:30

○NSns2.myhostadmin.net2015-07-06 → 2017-06-14 · 4 obs

● 2015-07-06 05:51:28
● 2017-06-14 21:02:46
○ 2026-02-17 21:31:46
○ 2026-03-15 22:03:30

○NSns3.myhostadmin.net2015-07-06 → 2017-06-14 · 4 obs

● 2015-07-06 05:51:28
● 2017-06-14 21:02:46
○ 2026-02-17 21:31:46
○ 2026-03-15 22:03:30

○NSns4.myhostadmin.net2015-07-06 → 2017-06-14 · 4 obs

● 2015-07-06 05:51:28
● 2017-06-14 21:02:46
○ 2026-02-17 21:31:46
○ 2026-03-15 22:03:30

○NSns5.myhostadmin.net2015-07-06 → 2017-06-14 · 4 obs

● 2015-07-06 05:51:28
● 2017-06-14 21:02:46
○ 2026-02-17 21:31:46
○ 2026-03-15 22:03:30

○NSns6.myhostadmin.net2015-07-06 → 2017-06-14 · 4 obs

● 2015-07-06 05:51:28
● 2017-06-14 21:02:46
○ 2026-02-17 21:31:46
○ 2026-03-15 22:03:30

○MXmail.51helpdesk.com2015-07-06 → 2015-11-11 · 4 obs

● 2015-07-06 05:51:28
● 2015-11-11 09:46:22
○ 2016-02-24 13:04:08
○ 2026-03-15 22:03:30

●MXqiye163mx01.mxmail.netease.com2016-02-24 → 2026-03-15 · 3 obs

○ 2015-11-11 09:46:22
● 2016-02-24 13:04:08
● 2026-03-15 22:03:30

●MXqiye163mx02.mxmail.netease.com2016-02-24 → 2026-03-15 · 3 obs

○ 2015-11-11 09:46:22
● 2016-02-24 13:04:08
● 2026-03-15 22:03:30

●A101.132.185.912026-02-17 → 2026-03-15 · 3 obs

○ 2017-06-14 21:02:46
● 2026-02-17 21:31:46
● 2026-03-15 22:03:30

○A211.149.132.1402016-11-27 → 2016-11-27 · 4 obs

○ 2016-02-24 13:04:08
● 2016-11-27 19:45:26
○ 2017-06-14 21:02:46
○ 2026-03-15 22:03:30

○A211.149.179.1782015-07-06 → 2016-02-24 · 4 obs

● 2015-07-06 05:51:28
● 2016-02-24 13:04:08
○ 2016-11-27 19:45:26
○ 2026-03-15 22:03:30

○CNAMEip-production.abc188.com2016-11-27 → 2016-11-27 · 4 obs

○ 2016-02-24 13:04:08
● 2016-11-27 19:45:26
○ 2017-06-14 21:02:46
○ 2026-03-15 22:03:30

○CNAMEproduction.gotoip4.com2015-07-06 → 2017-06-14 · 7 obs

● 2015-07-06 05:51:28
○ 2015-11-11 09:46:22
○ 2016-02-24 13:04:08
● 2016-11-27 19:45:26
● 2017-06-14 21:02:46
○ 2026-02-17 21:31:46
○ 2026-03-15 22:03:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
51helpdesk.com	dns7.hichina.com, dns8.hichina.com	18 records

✅ Authoritative Response

Server: 120.76.107.44

NS records: dns7.hichina.com, dns8.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 2004ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`101.132.185.91`
NS	2	`dns7.hichina.com, dns8.hichina.com`
MX	2	`qiye163mx02.mxmail.netease.com (pri: 10), qiye163mx01.mxmail.netease.com (pri: 10)`
TXT	1	`v=spf1 include:spf.163.com -all`
SOA	1	`dns7.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns7.hichina.com, dns7.hichina.com, dns7.hichina.com...)

Analysis

IP Addresses

51helpdesk.com points to a single IP number: 101.132.185.91.

Name Servers

51helpdesk.com is delegated to two name servers: dns7.hichina.com and dns8.hichina.com.

51helpdesk.com uses the same name server setup as other domains, for instance ztto.net, gzln.com.cn, mhacn.com, sikebaoan.com and acp-shjxlsb.com.

51helpdesk.com shares name servers with other domains at least partially, for instance vvtvv.cn and coacha.xyz.

these name servers are commonly used together with expirens3.hichina.com and expirens4.hichina.com.

Host names with nine IP numbers: dns7.hichina.com points to 2408:4009:501::15, 39.96.153.43, 39.96.153.63, 47.118.199.203, 47.118.199.213, 120.76.107.43, 120.76.107.63, 139.224.142.113 and 139.224.142.123; dns8.hichina.com points to 2408:4009:501::16, 39.96.153.44, 39.96.153.54, 47.118.199.204, 47.118.199.214, 120.76.107.44, 120.76.107.54, 139.224.142.114 and 139.224.142.124.

Mail Servers

51helpdesk.com is handled by two mail servers: qiye163mx01.mxmail.netease.com and qiye163mx02.mxmail.netease.com.

51helpdesk.com shares the same mail server setup as other domains, including gdaode.com, sulongwood.com, hse65.com, chinesetest.cn and anlunoil.com.