`21air.com`

DNSSEC	⚠️ Not signed
NS	`dns.bizcn.com` ⚠️ Not in zone NS records
		A	240c:4082:ffff:ff01:0:d:0:34a^{🇨🇳 Baidu240c:4082::/32}
		A	61.172.183.76^{🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC}
		A	61.240.129.114^{🇨🇳 CHINA169-Backbone61.240.128.0/19 CMI (Customer Route)}
NS	`dns.cnmsn.net` ⚠️ Not in zone NS records
		A	240c:4082:ffff:ff01:0:d:0:69^{🇨🇳 Baidu240c:4082::/32}
MX	`mxn.mxhichina.com` ⭐
		A	47.246.136.231^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
			PTR	`cz-clare.com`
			PTR	`reachsmartdwell.com`
			PTR	`wevolt.tech`
		A	47.246.137.47^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
			PTR	`ip-47-246-137-47.defastlink.net`
MX	`mxw.mxhichina.com`⁽¹⁰⁾
		A	47.246.99.195^{🇺🇸 Alibaba-Cloud47.246.96.0/22 Proxy-registered route object}
			PTR	`reachsmartdwell.com`
TXT	`v=spf1 include:spf.mxhichina.com -all`

`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=1771291435

WOT: SAFE (70/100)

Same first word

21air.us

21air.com

21air.cn

Similar names

12air.com

air21.com.ph

12air.ca

air21.gr.jp

air21.com

air21.org

air21.net

12air.ru

DNS History

6 records (4 active, 2 former)

●NSdns.bizcn.com2015-06-10 → 2026-03-23 · 2 obs

● 2015-06-10 03:21:20
● 2026-03-23 19:33:22

●NSdns.cnmsn.net2015-06-10 → 2026-03-23 · 2 obs

● 2015-06-10 03:21:20
● 2026-03-23 19:33:22

○MXmail.21air.com2015-06-10 → 2015-10-27 · 4 obs

● 2015-06-10 03:21:20
● 2015-10-27 00:17:22
○ 2016-01-22 17:59:20
○ 2026-03-23 19:33:22

●MXmxn.mxhichina.com2016-01-22 → 2026-03-23 · 3 obs

○ 2015-10-27 00:17:22
● 2016-01-22 17:59:20
● 2026-03-23 19:33:22

●MXmxw.mxhichina.com2016-01-22 → 2026-03-23 · 3 obs

○ 2015-10-27 00:17:22
● 2016-01-22 17:59:20
● 2026-03-23 19:33:22

○A118.242.1.932015-06-10 → 2015-10-27 · 4 obs

● 2015-06-10 03:21:20
● 2015-10-27 00:17:22
○ 2016-01-22 17:59:20
○ 2026-03-23 19:33:22

🔍 DNS Trace

Analysis

Name Servers

Delegation for 21air.com rests with two name servers, dns.bizcn.com and dns.cnmsn.net.

21air.com shares the same name server setup as other domains, including ntzyy.com, peizheng.cn, htpack.com, dagongsh.com.cn and 51g.net.

21air.com at least partially shares name servers with other domains, for instance dirui.com.cn, szddy.net, china-supreme.com, gala-casino-uk.com and wfabba.com.

These name servers are commonly used together with the name servers ns1.dns.com.cn, ns2.dns.com.cn, ns7.cnmsn.net, ns8.cnmsn.net, ns5.cnmsn.net, ns6.cnmsn.net, ns13.dns.com.cn, ns14.dns.com.cn, ns1.4everdns.com and ns2.4everdns.com.

Host names with three IP numbers:

The host name dns.bizcn.com points to 240c:4082:ffff:ff01:0:d:0:34a, 61.172.183.76 and 61.240.129.114.

Host names with one IP number:

The host name dns.cnmsn.net points to 240c:4082:ffff:ff01:0:d:0:69.

Mail Servers

21air.com is handled by two mail servers: mxn.mxhichina.com and mxw.mxhichina.com.

21air.com uses the same mail server configuration as other domains, such as szszcwy.com, moulamein.com, chenhuangke.space, rayfine.cn and dkccap.com.

21air.com shares mail servers with other domains at least in part, for instance psd1403.com, jsjhjt.cn, sino-strong.com.cn, 1rge.com and triallynx.com.

Host names with two IP numbers:

mxn.mxhichina.com points to 47.246.136.231 and 47.246.137.47.