hduhelp.com - dns.ninja

`hduhelp.com`

DNSSEC	⚠️ Not signed
A	121.43.175.130^{🇨🇳 Alibaba-Cloud121.42.0.0/15}
NS	`vip1.alidns.com` ⭐
		A	2408:4009:500::1^{🇨🇳 Alibaba-Cloud2408:4009:500::/48 Alibaba Group}
		A	8.212.93.1^{🇭🇰 Alibaba_Cloud_SEC8.212.93.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	140.205.1.1^{🇨🇳 Alibaba-Cloud140.205.1.0/24 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	170.33.32.208^{🇸🇬 Alibaba_Cloud_SEC170.33.32.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.73.24^{🇸🇬 Alibaba_Cloud_SEC170.33.73.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.80.8^{🇸🇬 Alibaba_Cloud_SEC170.33.80.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
NS	`vip2.alidns.com`
		A	2408:4009:500::2^{🇨🇳 Alibaba-Cloud2408:4009:500::/48 Alibaba Group}
		A	8.212.93.2^{🇭🇰 Alibaba_Cloud_SEC8.212.93.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	140.205.1.2^{🇨🇳 Alibaba-Cloud140.205.1.0/24 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	170.33.32.209^{🇸🇬 Alibaba_Cloud_SEC170.33.32.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.73.25^{🇸🇬 Alibaba_Cloud_SEC170.33.73.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.80.9^{🇸🇬 Alibaba_Cloud_SEC170.33.80.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
MX	`m1.feishu.cn` ⭐
TXT	`v=spf1 +include:_netblocks.m.feishu.cn ~all`
TXT	`MS=ms15689089`
TXT	`MS=ms29767643`
SOA	`vip1.alidns.com`hostmaster@hichina.com 2026-06-05 #11

`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=1785913054

Subdomains

al-hz-3.hduhelp.com

www.hduhelp.com

api.hduhelp.com

ingress.hduhelp.com

appdev.hduhelp.com

recaptcha.hduhelp.com

Same first word

hduhelp.com

hduhelp.cn

DNS History

13 records (4 active, 9 former)

○NSdns7.hichina.com2016-04-22 → 2017-11-04 · 5 obs

○ 2016-01-19 09:31:46
● 2016-04-22 01:11:34
● 2017-11-04 15:52:08
○ 2026-03-27 17:57:48
○ 2026-08-05 07:09:12

○NSdns8.hichina.com2016-04-22 → 2017-11-04 · 5 obs

○ 2016-01-19 09:31:46
● 2016-04-22 01:11:34
● 2017-11-04 15:52:08
○ 2026-03-27 17:57:48
○ 2026-08-05 07:09:12

○NSf1g1ns1.dnspod.net2015-06-15 → 2016-01-19 · 4 obs

● 2015-06-15 13:22:44
● 2016-01-19 09:31:46
○ 2016-04-22 01:11:34
○ 2026-08-05 07:09:12

○NSf1g1ns2.dnspod.net2015-06-15 → 2016-01-19 · 4 obs

● 2015-06-15 13:22:44
● 2016-01-19 09:31:46
○ 2016-04-22 01:11:34
○ 2026-08-05 07:09:12

●NSvip1.alidns.com2026-03-27 → 2026-08-05 · 3 obs

○ 2017-11-04 15:52:08
● 2026-03-27 17:57:48
● 2026-08-05 07:09:12

●NSvip2.alidns.com2026-03-27 → 2026-08-05 · 3 obs

○ 2017-11-04 15:52:08
● 2026-03-27 17:57:48
● 2026-08-05 07:09:12

●MXm1.feishu.cn2026-03-27 → 2026-08-05 · 3 obs

○ 2017-11-04 15:52:08
● 2026-03-27 17:57:48
● 2026-08-05 07:09:12

○MXmxbiz1.qq.com2016-04-22 → 2017-11-04 · 5 obs

○ 2016-01-19 09:31:46
● 2016-04-22 01:11:34
● 2017-11-04 15:52:08
○ 2026-03-27 17:57:48
○ 2026-08-05 07:09:12

○MXmxbiz2.qq.com2016-04-22 → 2017-11-04 · 5 obs

○ 2016-01-19 09:31:46
● 2016-04-22 01:11:34
● 2017-11-04 15:52:08
○ 2026-03-27 17:57:48
○ 2026-08-05 07:09:12

○MXmxn.mxhichina.com2015-10-27 → 2016-01-19 · 4 obs

● 2015-10-27 15:56:06
● 2016-01-19 09:31:46
○ 2016-04-22 01:11:34
○ 2026-08-05 07:09:12

○MXmxw.mxhichina.com2015-10-27 → 2016-01-19 · 4 obs

● 2015-10-27 15:56:06
● 2016-01-19 09:31:46
○ 2016-04-22 01:11:34
○ 2026-08-05 07:09:12

○A115.231.94.1462015-06-15 → 2016-01-19 · 4 obs

● 2015-06-15 13:22:44
● 2016-01-19 09:31:46
○ 2016-04-22 01:11:34
○ 2026-08-05 07:09:12

●A121.43.175.1302026-03-27 → 2026-08-05 · 3 obs

○ 2016-04-22 01:11:34
● 2026-03-27 17:57:48
● 2026-08-05 07:09:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, g.gtld-servers.net, l.gtld-servers.net, i.gtld-servers.net...	-
hduhelp.com	vip1.alidns.com, vip2.alidns.com	20 records

✅ Authoritative Response

Server:121.40.6.161

NS records: vip1.alidns.com, vip2.alidns.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 3538ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`121.43.175.130`
NS	2	`vip2.alidns.com, vip1.alidns.com`
MX	1	`m1.feishu.cn (pri: 20)`
TXT	3	`v=spf1 +include:_netblocks.m.feishu.cn , MS=ms15689089...`
SOA	1	`vip1.alidns.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 20

Out-of-bailiwick: 20 (vip1.alidns.com, vip1.alidns.com, vip1.alidns.com...)

Analysis

Hierarchy

The host names al-hz-3.hduhelp.com, www.hduhelp.com, api.hduhelp.com, ingress.hduhelp.com and appdev.hduhelp.com — among a few others — fall under the parent domain hduhelp.com.

IP Addresses

hduhelp.com has exactly one IP address — 121.43.175.130.

Host names like ingress.hduhelp.com are further examples that share IP numbers with hduhelp.com.

Name Servers

Two name servers handle the delegation for hduhelp.com: vip1.alidns.com and vip2.alidns.com.

The name server configuration of hduhelp.com is shared with other domains, for instance buleji.com, aladedalu.com, wangzhanzj.com and two others.

At least some of hduhelp.com's name servers are shared with other domains, for example njlike.com and gp51.com.

Hosts with 6 IP addresses each:

vip1.alidns.com resolves to 8.212.93.1, 140.205.1.1 and 170.33.32.208 among others, with 3 other IP addresses in total.

vip2.alidns.com resolves to 8.212.93.2, 140.205.1.2 and 170.33.32.209 among others, with 3 other IP addresses in total.

Mail Servers

hduhelp.com uses one mail server — m1.feishu.cn.

The mail server setup of hduhelp.com matches that of other domains such as qiaoqudian.com, seagine.com, yousails.com and two others.

At least some of the mail servers used by hduhelp.com are shared with other domains: mijo.cn, depu.cn, yatsenglobal.com and two others among them.

These mail servers often appear in conjunction with the mail servers mxn.mxhichina.com, mxw.mxhichina.com, mx2.feishu.cn and mx3.feishu.cn.