`21.net.cn`

DNSSEC	⚠️ Not signed
NS	`ns1.judns.com` ⚠️ Not in zone NS records
		A	47.97.51.45^{🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD}
NS	`ns1.julydns.com` ⚠️ Not in parent delegation
		A	47.97.51.45^{🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD}
NS	`ns2.judns.com` ⚠️ Not in zone NS records
		A	162.159.27.251^{Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns2.julydns.com` ⚠️ Not in parent delegation
		A	162.159.48.223^{Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}

`net.cn`

	DNSSEC	⚠️ Not signed
	NS	`a.dns.cn` ⭐ ⚠️ Not in parent delegation
	NS	`b.dns.cn` ⚠️ Not in parent delegation
	NS	`c.dns.cn` ⚠️ Not in parent delegation
	NS	`cns.cernet.net` ⚠️ Not in parent delegation
	NS	`d.dns.cn` ⚠️ Not in parent delegation
	NS	`e.dns.cn` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn serial=2028151982

WOT: SUSPICIOUS (55/100)

Same first word

21.org

21.com.tw

21.co.uk

21.vc

21.am

21.im

21.rs

21.amsterdam

21.com

21.bet

21.center

21.kz

21.fyi

21.cm

21.web.app

21.su

21.network

21.si

21.ph

21.is

21.be

21.com.ua

21.pe

21.edu.ar

21.gg

21.technology

21.capital

21.dk

21.email

21.ai

21.wf

21.sk

21.zone

21.immo

21.hk

21.cz

21.academy

21.style

21.school

21.(0x787878)

21.ink

21.pictures

21.show

21.nl

21.agency

21.co

21.biz

21.lv

21.uk

21.ru

21.co.za

21.co.tz

21.finance

21.re

21.co.com

21.ax

21.nu

21.business

21.casino

21.red

21.pl

21.ee

21.com.vn

21.partners

21.to

21.ie

21.photos

21.sb

21.cc

21.city

21.gs

21.fr

21.live

21.by

21.com.es

21.net.cn

21.eu

21.run

21.pw

21.se

21.org.cn

21.chat

21.net

21.game

21.la

21.ag

21.diamonds

21.cn

21.de

21.training

21.ca

Similar names

12.cl

12.ph

12.ma

12.rs

12.co.uk

12.de

12.in-addr.arpa

12.ag

12.kz

12.ie

12.plus

12.com.ua

12.cz

12.eu

12.uk

12.sg

12.life

12.network

12.dk

12.com.cn

12.org.ru

12.cx

12.org

12.nu

12.gl

12.vip

12.net.cn

12.gr

12.fyi

12.ai

12.tt

12.hk

12.gs

12.amsterdam

12.fr

12.vc

12.am

12.agency

12.digital

12.ac.cn

12.com.vn

12.lt

12.si

12.cfd

12.tf

12.pw

12.be

12.fi

12.cc

DNS History

8 records (4 active, 4 former)

○NSdns1.hichina.com2015-07-08 → 2016-12-08 · 4 obs

● 2015-07-08 18:32:24
● 2016-12-08 07:26:36
○ 2026-04-10 02:46:58
○ 2026-04-12 10:29:26

○NSdns2.hichina.com2015-07-08 → 2016-12-08 · 4 obs

● 2015-07-08 18:32:24
● 2016-12-08 07:26:36
○ 2026-04-10 02:46:58
○ 2026-04-12 10:29:26

●NSns1.judns.com2026-04-10 → 2026-04-12 · 3 obs

○ 2016-12-08 07:26:36
● 2026-04-10 02:46:58
● 2026-04-12 10:29:26

●NSns1.julydns.com2026-04-10 → 2026-04-12 · 3 obs

○ 2016-12-08 07:26:36
● 2026-04-10 02:46:58
● 2026-04-12 10:29:26

●NSns2.judns.com2026-04-10 → 2026-04-12 · 3 obs

○ 2016-12-08 07:26:36
● 2026-04-10 02:46:58
● 2026-04-12 10:29:26

●NSns2.julydns.com2026-04-10 → 2026-04-12 · 3 obs

○ 2016-12-08 07:26:36
● 2026-04-10 02:46:58
● 2026-04-12 10:29:26

○MXmail.21.net.cn2015-07-08 → 2016-12-08 · 4 obs

● 2015-07-08 18:32:24
● 2016-12-08 07:26:36
○ 2026-04-10 02:46:58
○ 2026-04-12 10:29:26

○A218.25.243.552015-07-08 → 2016-12-08 · 4 obs

● 2015-07-08 18:32:24
● 2016-12-08 07:26:36
○ 2026-04-10 02:46:58
○ 2026-04-12 10:29:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
21.net.cn	ns1.judns.com, ns2.judns.com	-

✅ Authoritative Response

Server:162.159.27.251

NS records: ns1.judns.com, ns2.judns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21.net.cn (unsigned zone)

⏱️ Timing

Total: 845ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`ns1.julydns.com, ns2.julydns.com`

Analysis

Name Servers

21.net.cn is delegated to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.

21.net.cn shares name servers with other domains at least partially, for example nnlxfs888.com, dermatosis.org, 520elife.com, hanrp.com and lctus.com.