cdou.com - dns.ninja

`cdou.com`

DNSSEC	⚠️ Not signed
NS	`dns31.hichina.com` ⭐
		A	2408:4009:501::39^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.39^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.59^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.199^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.219^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.39^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.59^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.99^{🇨🇳 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	139.224.142.109^{🇨🇳 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	`dns32.hichina.com`
		A	2408:4009:501::40^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.37^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.62^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.197^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.221^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.37^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.62^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.102^{🇨🇳 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	139.224.142.107^{🇨🇳 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,}
SOA	`dns31.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=1782647200

Previously MX for

cdou.com

Same first word

cdou.es

cdou.edu.cn

cdou.com

Similar names

udoc.nl

coud.site

docu.work

docu.ws

docu.no

coud.cn

duco.life

udoc.eu

docu.ir

docu.se

cudo.co

udoc.net

duco.fi

duco.co.za

douc.cz

udco.co.uk

codu.com.mx

cudo.it

odcu.cn

docu.bot

cudo.kr

douc.dk

duco.no

docu.systems

cudo.online

codu.com

docu.co

duco.co.uk

duco.de

docu.ai

duco.tv

duco.pl

duco.com

docu.pet

duco.cn

duco.pro

docu.info

docu.cn

uodc.cn

uodc.com

duco.eu

cudo.tv

duoc.de

codu.co

docu.com

docu.at

cudo.co.id

duco.it

duco.ws

duco.org

cudo.cn

duco.at

cudo.site

udoc.de

douc.cc

duoc.com

ucod.kr

duoc.ru

codu.in

udco.org

douc.com

ucod.com.ar

docu.team

odcu.com

docu.ca

cudo.fr

cudo.com.au

duco.us

dcuo.es

codu.nl

codu.ru

cuod.cn

docu.website

dcuo.nl

cduo.net

cudo.net

codu.eu

docu.ch

duco.or.kr

cudo.de

duoc.nl

odcu.xin

ucod.ru

duco.li

cudo.no

docu.gmbh

douc.info

docu.cat

douc.mobi

cudo.io

udoc.org

uodc.fr

duco.se

udoc.ir

dcuo.de

cudo.co.kr

duco.es

docu.fyi

DNS History

11 records (2 active, 9 former)

●NSdns31.hichina.com2026-03-30 → 2026-06-28 · 3 obs

○ 2026-03-07 19:49:44
● 2026-03-30 07:09:42
● 2026-06-28 11:55:32

●NSdns32.hichina.com2026-03-30 → 2026-06-28 · 3 obs

○ 2026-03-07 19:49:44
● 2026-03-30 07:09:42
● 2026-06-28 11:55:32

○NSns1.afternic.com2026-03-07 → 2026-03-07 · 4 obs

○ 2018-10-09 23:52:26
● 2026-03-07 19:49:44
○ 2026-03-30 07:09:42
○ 2026-06-28 11:55:32

○NSns1.muitrading.com2018-10-09 → 2018-10-09 · 3 obs

● 2018-10-09 23:52:26
○ 2026-03-07 19:49:44
○ 2026-06-28 11:55:32

○NSns2.afternic.com2026-03-07 → 2026-03-07 · 4 obs

○ 2018-10-09 23:52:26
● 2026-03-07 19:49:44
○ 2026-03-30 07:09:42
○ 2026-06-28 11:55:32

○NSns2.muitrading.com2018-10-09 → 2018-10-09 · 3 obs

● 2018-10-09 23:52:26
○ 2026-03-07 19:49:44
○ 2026-06-28 11:55:32

○MX.2026-03-07 → 2026-06-28 · 2 obs

○ 2026-03-07 19:49:44
○ 2026-06-28 11:55:32

○MXcdou.com2018-10-09 → 2018-10-09 · 3 obs

● 2018-10-09 23:52:26
○ 2026-03-07 19:49:44
○ 2026-06-28 11:55:32

○A13.248.169.482026-03-07 → 2026-03-07 · 4 obs

○ 2018-10-09 23:52:26
● 2026-03-07 19:49:44
○ 2026-03-30 07:09:42
○ 2026-06-28 11:55:32

○A63.142.241.1312018-10-09 → 2018-10-09 · 3 obs

● 2018-10-09 23:52:26
○ 2026-03-07 19:49:44
○ 2026-06-28 11:55:32

○A76.223.54.1462026-03-07 → 2026-03-07 · 4 obs

○ 2018-10-09 23:52:26
● 2026-03-07 19:49:44
○ 2026-03-30 07:09:42
○ 2026-06-28 11:55:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
cdou.com	dns31.hichina.com, dns32.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.37

NS records: dns31.hichina.com, dns32.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cdou.com (unsigned zone)

⏱️ Timing

Total: 521ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns31.hichina.com, dns32.hichina.com`
SOA	1	`dns31.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns31.hichina.com, dns31.hichina.com, dns31.hichina.com...)

Analysis

Name Servers

cdou.com is served by two delegated name servers, dns31.hichina.com and dns32.hichina.com.

cdou.com shares its NS records with other domains, for example of9.cn, meadows.cn, szeiffel.com and two others.

Some of cdou.com's name servers are also used by other domains, including decca.cn, weixin315.com, shangbiaogov.com and vivify.cn.

These name servers are regularly seen alongside ns1.alidns.com and ns2.alidns.com as name servers.

DNS names with 9 IP addresses:

dns31.hichina.com carries IP addresses 39.96.153.39, 39.96.153.59 and 47.118.199.199, with 6 other addresses beyond those.

dns32.hichina.com carries IP addresses 39.96.153.37, 39.96.153.62 and 47.118.199.197, with 6 other addresses beyond those.