code4u.cn - dns.ninja

`code4u.cn`

DNSSEC	⚠️ Not signed
A	39.101.77.164^{🇨🇳 Alibaba-Cloud39.100.0.0/14 CT BeiJing IDC}
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	`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}
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`
SOA	`dns9.hichina.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=2035125297

Same first word

code4u.com

code4u.net

code4u.nl

code4u.de

code4u.vn

code4u.org

code4u.ru

code4u.cn

code4u.co

code4u.co.il

Similar names

4ucode.com

4educo.com

edoc4u.com

deco4u.com

deco4u.de

DNS History

6 records (5 active, 1 former)

●NSdns10.hichina.com2015-11-08 → 2026-08-02 · 2 obs

● 2015-11-08 20:12:08
● 2026-08-02 20:42:50

●NSdns9.hichina.com2015-11-08 → 2026-08-02 · 2 obs

● 2015-11-08 20:12:08
● 2026-08-02 20:42:50

●MXmxn.mxhichina.com2016-01-26 → 2026-08-02 · 2 obs

● 2016-01-26 09:20:38
● 2026-08-02 20:42:50

●MXmxw.mxhichina.com2016-01-26 → 2026-08-02 · 2 obs

● 2016-01-26 09:20:38
● 2026-08-02 20:42:50

○A121.42.83.1182015-11-08 → 2020-02-07 · 4 obs

● 2015-11-08 20:12:08
● 2020-02-07 10:15:48
○ 2026-03-03 10:29:50
○ 2026-08-02 20:42:50

●A39.101.77.1642026-03-03 → 2026-08-02 · 3 obs

○ 2020-02-07 10:15:48
● 2026-03-03 10:29:50
● 2026-08-02 20:42:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
code4u.cn	dns9.hichina.com, dns10.hichina.com	-

✅ Authoritative Response

Server:120.76.107.52

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for code4u.cn (unsigned zone)

⏱️ Timing

Total: 1575ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`39.101.77.164`
NS	2	`dns10.hichina.com, dns9.hichina.com`
MX	2	`mxn.mxhichina.com (pri: 5), mxw.mxhichina.com (pri: 10)`
TXT	1	`v=spf1 include:spf.mxhichina.com -all`
SOA	1	`dns9.hichina.com hostmaster.hichina.com`

Analysis

IP Addresses

code4u.cn resolves to one IP address: 39.101.77.164.

Name Servers

code4u.cn is delegated to two name servers: dns10.hichina.com and dns9.hichina.com.

code4u.cn uses the same name servers as several other domains — among them zhrxcl.com, aplusehs.com, hebas.cn and two more.

The name servers for code4u.cn are partially shared with other domains like huoney.com, cl-sp.com and zhenhuan888.com

These name servers are regularly seen alongside expirens3.hichina.com and expirens4.hichina.com as name servers.

Hostnames that resolve to 9 IP addresses:

dns10.hichina.com resolves to 39.96.153.41, 39.96.153.51, 47.118.199.201 and 6 other IP addresses.

dns9.hichina.com resolves to 39.96.153.42, 39.96.153.52, 47.118.199.202 and 6 other IP addresses.

Mail Servers

Mail for code4u.cn is handled by two mail servers — mxn.mxhichina.com and mxw.mxhichina.com.

code4u.cn uses an identical mail server configuration to several other domains — among them sanfordtools.com, nbhczz.cn, szboertu.com and two more.

code4u.cn has at least partial mail server overlap with other domains such as zhutairong.com, 120ke.com, dnnsmart.net and two more.

Hostnames that resolve to two IP addresses:

mxn.mxhichina.com points to 47.246.136.231 and 47.246.137.47.

Hosts with just one IP address:

mxw.mxhichina.com points to 47.246.99.195.