`dudu-inc.com`

DNSSEC	⚠️ Not signed
A	211.100.39.14^{🇨🇳 CHINA-1211.100.39.0/24 ASes Within CT BeiJing IDC}
NS	`dns13.hichina.com` ⭐
		A	2408:4009:501::21^{🇨🇳 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	`dns14.hichina.com`
		A	2408:4009:501::22^{🇨🇳 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	`duduinc-com01b.mail.protection.partner.outlook.cn` ⭐
		A	2406:e500:4420:2::10^{🇨🇳 BLUECLOUD2406:e500::/33 Microsoft China (21V)}
			PTR	`mail-sh0chn020010.inbound.protection.outlook.com`
		A	2406:e500:4440:2::10^{🇨🇳 BLUECLOUD2406:e500::/33 Microsoft China (21V)}
			PTR	`mail-bjschn020010.inbound.protection.outlook.com`
		A	139.219.17.10^{🇨🇳 BLUECLOUD139.219.0.0/17 Microsoft China}
			PTR	`mail-bjschn020010.inbound.protection.outlook.com`
		A	139.219.146.10^{🇨🇳 BLUECLOUD139.219.128.0/17 Microsoft China}
			PTR	`mail-sh0chn020010.inbound.protection.outlook.com`
TXT	`v=spf1 include:spf.protection.partner.outlook.cn -all`
TXT	`MS=ms82966872`
SOA	`dns13.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=1777881931

Subdomains

www.dudu-inc.com

mail.dudu-inc.com

Same first word

dudu-inc.cn

dudu-inc.com

DNS History

7 records (4 active, 3 former)

●NSdns13.hichina.com2026-02-15 → 2026-05-04 · 3 obs

○ 2016-07-18 11:25:30
● 2026-02-15 13:42:28
● 2026-05-04 08:06:28

●NSdns14.hichina.com2026-02-15 → 2026-05-04 · 3 obs

○ 2016-07-18 11:25:30
● 2026-02-15 13:42:28
● 2026-05-04 08:06:28

○NSns1.18dx.com2015-08-06 → 2016-07-18 · 4 obs

● 2015-08-06 13:27:58
● 2016-07-18 11:25:30
○ 2026-02-15 13:42:28
○ 2026-05-04 08:06:28

○NSns3.18dx.com2015-08-06 → 2016-07-18 · 4 obs

● 2015-08-06 13:27:58
● 2016-07-18 11:25:30
○ 2026-02-15 13:42:28
○ 2026-05-04 08:06:28

●MXduduinc-com01b.mail.protection.partner.outlook.cn2026-02-15 → 2026-05-04 · 3 obs

○ 2016-07-18 11:25:30
● 2026-02-15 13:42:28
● 2026-05-04 08:06:28

○MXmail.dudu-inc.com2015-08-06 → 2016-07-18 · 4 obs

● 2015-08-06 13:27:58
● 2016-07-18 11:25:30
○ 2026-02-15 13:42:28
○ 2026-05-04 08:06:28

●A211.100.39.142015-08-06 → 2026-05-04 · 2 obs

● 2015-08-06 13:27:58
● 2026-05-04 08:06:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	m.gtld-servers.net, f.gtld-servers.net, d.gtld-servers.net, j.gtld-servers.net...	-
dudu-inc.com	dns13.hichina.com, dns14.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.41

NS records: dns13.hichina.com, dns14.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dudu-inc.com (unsigned zone)

⏱️ Timing

Total: 721ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`211.100.39.14`
NS	2	`dns13.hichina.com, dns14.hichina.com`
MX	1	`duduinc-com01b.mail.protection.partner.o`
TXT	2	`v=spf1 include:spf.protection.partner.ou, MS=ms82966872`
SOA	1	`dns13.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns13.hichina.com, dns13.hichina.com, dns13.hichina.com...)

Analysis

Hierarchy

dudu-inc.com is the parent of www.dudu-inc.com and mail.dudu-inc.com.

IP Addresses

dudu-inc.com resolves to a single IP: 211.100.39.14.

Other host names share IP numbers with dudu-inc.com; for instance www.dudu-inc.com.

Name Servers

dudu-inc.com has two name servers: dns13.hichina.com and dns14.hichina.com.

dudu-inc.com shares the same name server setup as other domains, for example deyuanxin.com.cn, dbwan.com, oao.com.cn, wangdaxing.com and raobao.cn.

dudu-inc.com shares some name servers with other domains, for example hxhh.cn, mbasset.com, unspay.com, cumy.cn and jinzehongwiremesh.com.