`bj21cn.com`

DNSSEC	⚠️ Not signed
NS	`dns9.hichina.com` ⭐
		A	2408:4009:501::17^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.42^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.52^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.202^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.212^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.42^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.52^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.112^{🇨🇳 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	139.224.142.122^{🇨🇳 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	`dns10.hichina.com`
		A	2408:4009:501::18^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.41^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.51^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.201^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.211^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.41^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.51^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.111^{🇨🇳 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	139.224.142.121^{🇨🇳 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	`mxw.mxhichina.com` ⭐
		A	47.246.99.195^{🇺🇸 Alibaba-Cloud47.246.96.0/22 Proxy-registered route object}
			PTR	`ip-47-246-99-195.defastlink.net`
MX	`mxn.mxhichina.com`⁽¹⁰⁾
		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}
SOA	`dns9.hichina.com`hostmaster@hichina.com 2026-01-09 #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=1774653292

Same first word

bj21cn.com

Similar names

ncjb12.com

21cnbj.com

DNS History

7 records (4 active, 3 former)

●NSdns10.hichina.com2016-12-17 → 2026-03-27 · 2 obs

● 2016-12-17 13:14:04
● 2026-03-27 23:23:30

●NSdns9.hichina.com2016-12-17 → 2026-03-27 · 2 obs

● 2016-12-17 13:14:04
● 2026-03-27 23:23:30

○MXmailcdn.21cn.com2016-12-17 → 2017-01-18 · 4 obs

● 2016-12-17 13:14:04
● 2017-01-18 16:52:36
○ 2018-09-21 01:17:12
○ 2026-03-27 23:23:30

○MXmta-ent.21cn.com2016-12-17 → 2017-01-18 · 4 obs

● 2016-12-17 13:14:04
● 2017-01-18 16:52:36
○ 2018-09-21 01:17:12
○ 2026-03-27 23:23:30

●MXmxn.mxhichina.com2018-09-21 → 2026-03-27 · 3 obs

○ 2017-01-18 16:52:36
● 2018-09-21 01:17:12
● 2026-03-27 23:23:30

●MXmxw.mxhichina.com2018-09-21 → 2026-03-27 · 3 obs

○ 2017-01-18 16:52:36
● 2018-09-21 01:17:12
● 2026-03-27 23:23:30

○A183.78.182.762016-12-17 → 2018-09-21 · 3 obs

● 2016-12-17 13:14:04
● 2018-09-21 01:17:12
○ 2026-03-27 23:23:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
bj21cn.com	dns9.hichina.com, dns10.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.41

NS records: dns9.hichina.com, dns10.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bj21cn.com (unsigned zone)

⏱️ Timing

Total: 533ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns10.hichina.com, dns9.hichina.com`
MX	2	`mxn.mxhichina.com (pri: 10), mxw.mxhichina.com (pri: 5)`
SOA	1	`dns9.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns9.hichina.com, dns9.hichina.com, dns9.hichina.com...)

Analysis

Name Servers

bj21cn.com is delegated to two name servers: dns10.hichina.com and dns9.hichina.com.

bj21cn.com uses the same name server setup as other domains, including lekegrupo.com, duankua.com, huszp.com, ln139.net and 800123456.vip.

At least part of the name servers for bj21cn.com are shared with other domains, for instance gyqlss.com, agedcare.com.cn, cornstarch.cn, jxzmcc.com and wtv3.com.

These name servers are commonly used alongside expirens3.hichina.com and expirens4.hichina.com.

Host names with nine IP numbers:

dns10.hichina.com points to: 2408:4009:501::18, 39.96.153.41, 39.96.153.51, 47.118.199.201, 47.118.199.211, 120.76.107.41, 120.76.107.51, 139.224.142.111 and 139.224.142.121.

dns9.hichina.com points to: 2408:4009:501::17, 39.96.153.42, 39.96.153.52, 47.118.199.202, 47.118.199.212, 120.76.107.42, 120.76.107.52, 139.224.142.112 and 139.224.142.122.

Mail Servers

bj21cn.com is handled by two mail servers: mxn.mxhichina.com and mxw.mxhichina.com.

bj21cn.com uses the same mail server setup as other domains, for instance mul-e.com, fakemu.com, eclinksz.com, casc-sh.com and esinochem.com.

bj21cn.com shares at least some mail servers with other domains, for example bmti.com.cn, daguan.com, bretoncontainers.com, adg-scm.com and pantonecn.com.

Host names with two IP numbers: mxn.mxhichina.com points to 47.246.136.231 and 47.246.137.47.

Host names with one IP number: mxw.mxhichina.com points to 47.246.99.195.

bj21cn.com - robtex.com

bj21cn.com

com