`rdoc.cn`

DNSSEC	⚠️ Not signed
NS	`dns23.hichina.com` ⭐
		A	2408:4009:501::31^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.40^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.60^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.200^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.220^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.40^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.60^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.100^{🇨🇳 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	139.224.142.110^{🇨🇳 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	`dns24.hichina.com`
		A	2408:4009:501::32^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.38^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.61^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.198^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.222^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.38^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.61^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.98^{🇨🇳 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	139.224.142.108^{🇨🇳 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	`dns23.hichina.com`hostmaster@hichina.com 2026-02-15 #18

`cn`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.dns.cn` ⭐
	NS	`b.dns.cn`
	NS	`c.dns.cn`
	NS	`d.dns.cn`
	NS	`e.dns.cn`
	NS	`ns.cernet.net` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn serial=2035124001

Same first word

rdoc.ru

rdoc.eu

rdoc.cz

rdoc.de

rdoc.net

rdoc.cn

rdoc.info

rdoc.com

rdoc.org

rdoc.tk

rdoc.org.uk

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cord.guru

cdro.ca

cord.com.br

rdco.me

droc.ca

rdco.eu

droc.cn

rcdo.kz

dcor.vn

crod.com.br

docr.app

odcr.com

cord.cat

rdco.ca

dcor.ind.br

cord.care

dcor.com

drco.com.au

dorc.se

cord.fr

codr.it

orcd.nl

crod.me

ordc.org

docr.de

ordc.eu

rcdo.org

dcro.com

dorc.info

rcod.ru

odrc.org

cord.se

dorc.ru

droc.de

codr.net

cord.org

crdo.nl

rocd.fr

dcor.gov.mk

cord.kz

cord.tw

rcdo.org.in

dorc.eu

orcd.me

rocd.de

dorc.com.mx

dorc.org.uk

cord.kr

cord.ir

orcd.org

cord.com.au

ordc.com

codr.eu

rdco.info

dcor.com.mx

dcor.cn

rdco.ru

droc.org

dcor.org

crod.org

cdor.ca

codr.ru

cdro.cn

cord.jp

cord.net

codr.cn

dorc.es

cord.so

dorc.de

rocd.me

drco.net

codr.to

cdor.org

cord.bc.ca

drco.be

rodc.ca

odrc.com

cord.nu

crod.us

rodc.net

codr.biz

cord.ch

drco.ru

cord.be

rcdo.co.uk

dcro.org.pl

cord.nl

dcor.com.br

cord.org.cn

codr.tv

cdro.org.af

rodc.org

orcd.co

rcod.es

crod.cn

DNS History

7 records (2 active, 5 former)

○NSdns.bizcn.com2015-08-21 → 2021-02-12 · 4 obs

● 2015-08-21 06:58:28
● 2021-02-12 07:43:36
○ 2026-06-21 04:27:36
○ 2026-08-02 11:10:24

●NSdns23.hichina.com2026-06-21 → 2026-08-02 · 3 obs

○ 2021-02-12 07:43:36
● 2026-06-21 04:27:36
● 2026-08-02 11:10:24

●NSdns24.hichina.com2026-06-21 → 2026-08-02 · 3 obs

○ 2021-02-12 07:43:36
● 2026-06-21 04:27:36
● 2026-08-02 11:10:24

○NSns5.cnmsn.net2015-08-21 → 2021-02-12 · 4 obs

● 2015-08-21 06:58:28
● 2021-02-12 07:43:36
○ 2026-06-21 04:27:36
○ 2026-08-02 11:10:24

○NSns6.cnmsn.net2015-08-21 → 2021-02-12 · 4 obs

● 2015-08-21 06:58:28
● 2021-02-12 07:43:36
○ 2026-06-21 04:27:36
○ 2026-08-02 11:10:24

○A103.20.195.692016-03-19 → 2016-03-19 · 4 obs

○ 2015-08-21 06:58:28
● 2016-03-19 16:19:18
○ 2016-09-10 03:40:56
○ 2026-08-02 11:10:24

○A103.229.30.582015-08-21 → 2015-08-21 · 3 obs

● 2015-08-21 06:58:28
○ 2016-03-19 16:19:18
○ 2026-08-02 11:10:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
rdoc.cn	dns23.hichina.com, dns24.hichina.com	-

✅ Authoritative Response

Server:2408:4009:501::32

NS records: dns23.hichina.com, dns24.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rdoc.cn (unsigned zone)

⏱️ Timing

Total: 3798ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns24.hichina.com, dns23.hichina.com`
SOA	1	`dns23.hichina.com hostmaster.hichina.com`

Analysis

Name Servers

Two name servers handle the delegation for rdoc.cn: dns23.hichina.com and dns24.hichina.com.

rdoc.cn shares its name server setup with other domains, including nbhtsh.com, futuralparking.com, yixt.cc and two others.

rdoc.cn has overlapping name servers with several other domains — among them qipaoxian.net, xianjinniu.com, nbwgdzsw.com and qkffjd.com.

These name servers commonly appear alongside the name servers expirens3.hichina.com and expirens4.hichina.com.

Host names with 9 IP numbers:

dns23.hichina.com resolves to 39.96.153.40, 39.96.153.60 and 47.118.199.200 among others, with 6 other IP addresses in total.

dns24.hichina.com resolves to 39.96.153.38, 39.96.153.61 and 47.118.199.198 among others, with 6 other IP addresses in total.

rdoc.cn - robtex.com

rdoc.cn

cn

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Name Servers

`rdoc.cn`

`cn`