`web21.cn`

DNSSEC	⚠️ Not signed
A	139.224.252.83^{🇨🇳 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	`dns21.hichina.com` ⭐
		A	2408:4009:501::29^{🇨🇳 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	`dns22.hichina.com`
		A	2408:4009:501::30^{🇨🇳 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,}
MX	`mxdomain.qq.com` ⭐
TXT	`v=spf1 include:spf.mail.qq.com ~all`
SOA	`dns21.hichina.com`hostmaster@hichina.com 2026-06-04 #13

`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=2035036490

Same first word

web21.com

web21.jp

web21.it

web21.sk

web21.fr

web21.org

web21.ru

web21.co.uk

web21.net

web21.cn

web21.ch

web21.de

web21.pl

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web12.fr

web12.cz

21web.com

12web.com

web12.cn

web12.eu

web12.com.es

12web.nl

21web.co.kr

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21web.de

b2ew1.casino

web12.ro

21web.ru

bwe21.com

web12.kr

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DNS History

8 records (4 active, 4 former)

●NSdns21.hichina.com2015-05-27 → 2026-07-13 · 2 obs

● 2015-05-27 16:21:18
● 2026-07-13 15:15:38

●NSdns22.hichina.com2015-05-27 → 2026-07-13 · 2 obs

● 2015-05-27 16:21:18
● 2026-07-13 15:15:38

●MXmxdomain.qq.com2015-10-19 → 2026-07-13 · 3 obs

○ 2015-05-27 16:21:18
● 2015-10-19 04:10:30
● 2026-07-13 15:15:38

○MXmxn.mxhichina.com2015-05-27 → 2015-05-27 · 3 obs

● 2015-05-27 16:21:18
○ 2015-10-19 04:10:30
○ 2026-07-13 15:15:38

○MXmxw.mxhichina.com2015-05-27 → 2015-05-27 · 3 obs

● 2015-05-27 16:21:18
○ 2015-10-19 04:10:30
○ 2026-07-13 15:15:38

○A106.15.89.2042020-03-24 → 2020-03-24 · 4 obs

○ 2017-03-26 17:38:26
● 2020-03-24 21:55:58
○ 2026-06-27 22:31:34
○ 2026-07-13 15:15:38

○A114.215.86.2492015-05-27 → 2017-03-26 · 4 obs

● 2015-05-27 16:21:18
● 2017-03-26 17:38:26
○ 2020-03-24 21:55:58
○ 2026-07-13 15:15:38

●A139.224.252.832026-06-27 → 2026-07-13 · 3 obs

○ 2020-03-24 21:55:58
● 2026-06-27 22:31:34
● 2026-07-13 15:15:38

🔍 DNS Trace

Analysis

IP Addresses

web21.cn resolves to one IP address: 139.224.252.83.

Name Servers

web21.cn is served by two delegated name servers, dns21.hichina.com and dns22.hichina.com.

web21.cn uses the same name servers as several other domains — among them tjtyhk.com, cables-world.com, tccimfg.cn and two more.

web21.cn partially shares its NS delegation with several other domains, including sczdcn.com, 5yi.cn, yidingnuo.com and two others.

In DNS configurations, these name servers often share authority with ns1.alidns.com, ns2.alidns.com, expirens3.hichina.com and 3 other name servers.

Hostnames that resolve to 9 IP addresses:

dns21.hichina.com carries IP addresses 39.96.153.40, 39.96.153.60 and 47.118.199.200, with 6 other addresses beyond those.

dns22.hichina.com carries IP addresses 39.96.153.38, 39.96.153.61 and 47.118.199.198, with 6 other addresses beyond those.

Mail Servers

Mail for web21.cn is handled by a single mail server, mxdomain.qq.com.

web21.cn uses an identical mail server configuration to several other domains — among them hx-gift.com, spaces.ac.cn, qtwo.com and two more.

web21.cn has at least partial mail server overlap with other domains such as weijiuxin.com, wuliangroup.cn, oviyi.com and two more.

The mail servers mxbiz1.qq.com and mxbiz2.qq.com regularly co-occur with these mail servers.

web21.cn - robtex.com

web21.cn

cn