`21ccnn.cn`

DNSSEC	⚠️ Not signed
A	106.52.112.28^{🇨🇳 TENCENT-NET-AP106.52.112.0/20}
NS	`ns11.bigwww.com` ⭐
		A	2408:4009:501::9^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.43^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.203^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
NS	`ns12.bigwww.com`
		A	2408:4009:501::10^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	120.76.107.43^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.113^{🇨🇳 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	`ns13.bigwww.com` ⚠️ Not in zone NS records
		A	47.118.199.203^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
NS	`ns14.bigwww.com` ⚠️ Not in zone NS records
		A	139.224.142.113^{🇨🇳 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	`ns15.bigwww.com` ⚠️ Not in zone NS records
		A	39.96.153.43^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
NS	`ns16.bigwww.com` ⚠️ Not in zone NS records
		A	120.76.107.43^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
MX	`mail.21ccnn.cn` ⭐
		A	106.52.112.28^{🇨🇳 TENCENT-NET-AP106.52.112.0/20}
SOA	`ns11.bigwww.com`hostmaster@hichina.com 2026-01-12 #9

`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=2034590216

Subdomains

mail.21ccnn.cn

Same first word

21ccnn.cn

21ccnn.com

Similar names

cn21cn.com

DNS History

10 records (8 active, 2 former)

●NSns11.bigwww.com2015-06-24 → 2026-03-26 · 2 obs

● 2015-06-24 13:10:10
● 2026-03-26 16:45:34

●NSns12.bigwww.com2026-03-13 → 2026-03-26 · 3 obs

○ 2015-06-24 13:10:10
● 2026-03-13 19:04:14
● 2026-03-26 16:45:34

●NSns13.bigwww.com2026-03-13 → 2026-03-26 · 3 obs

○ 2015-06-24 13:10:10
● 2026-03-13 19:04:14
● 2026-03-26 16:45:34

●NSns14.bigwww.com2026-03-13 → 2026-03-26 · 3 obs

○ 2015-06-24 13:10:10
● 2026-03-13 19:04:14
● 2026-03-26 16:45:34

●NSns15.bigwww.com2026-03-13 → 2026-03-26 · 3 obs

○ 2015-06-24 13:10:10
● 2026-03-13 19:04:14
● 2026-03-26 16:45:34

●NSns16.bigwww.com2026-03-13 → 2026-03-26 · 3 obs

○ 2015-06-24 13:10:10
● 2026-03-13 19:04:14
● 2026-03-26 16:45:34

●MXmail.21ccnn.cn2015-06-24 → 2026-03-26 · 2 obs

● 2015-06-24 13:10:10
● 2026-03-26 16:45:34

○A103.242.100.732015-06-24 → 2015-11-11 · 4 obs

● 2015-06-24 13:10:10
● 2015-11-11 16:00:42
○ 2016-02-06 14:32:58
○ 2026-03-26 16:45:34

●A106.52.112.282026-03-13 → 2026-03-26 · 3 obs

○ 2017-04-07 10:35:48
● 2026-03-13 19:04:14
● 2026-03-26 16:45:34

○A121.12.125.1512016-02-06 → 2017-04-07 · 5 obs

○ 2015-11-11 16:00:42
● 2016-02-06 14:32:58
● 2017-04-07 10:35:48
○ 2026-03-13 19:04:14
○ 2026-03-26 16:45:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	b.dns.cn, d.dns.cn, a.dns.cn, c.dns.cn...	-
21ccnn.cn	ns11.bigwww.com, ns12.bigwww.com, ns13.bigwww.com, ns14.bigwww.com...	-

✅ Authoritative Response

Server:47.118.199.203

NS records: ns11.bigwww.com, ns12.bigwww.com, ns13.bigwww.com, ns14.bigwww.com, ns15.bigwww.com, ns16.bigwww.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 3317ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`106.52.112.28`
NS	2	`ns11.bigwww.com, ns12.bigwww.com`
MX	1	`mail.21ccnn.cn (pri: 10)`
SOA	1	`ns11.bigwww.com hostmaster.hichina.com`

Analysis

Hierarchy

21ccnn.cn is a parent of mail.21ccnn.cn.

IP Addresses

21ccnn.cn points to a single IP number: 106.52.112.28.

Other host names, for instance mail.21ccnn.cn, share IP numbers with 21ccnn.cn.

Name Servers

21ccnn.cn is delegated to six name servers: ns11.bigwww.com, ns12.bigwww.com, ns13.bigwww.com, ns14.bigwww.com, ns15.bigwww.com and ns16.bigwww.com.

21ccnn.cn at least partially shares name servers with other domains, for instance zgzgqczx.com, chncsl.com, cl-telecom.com, softpeixun.com and omoomo.com.