🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`codeclassroom.org`

DNSSEC	⚠️ Not signed
A	39.105.5.144^{🇨🇳 Alibaba-Cloud39.104.0.0/15 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 2026-08-26 #16

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1788118264

Same first word

codeclassroom.com

codeclassroom.net

codeclassroom.dev

codeclassroom.org

Similar names

classroomcode.com

Previous names

Next names

DNS History

11 records (5 active, 6 former)

●NSdns10.hichina.com2016-03-22 → 2026-08-30 · 3 obs

○ 2015-12-04 03:19:56
● 2016-03-22 22:41:16
● 2026-08-30 20:12:42

●NSdns9.hichina.com2016-03-22 → 2026-08-30 · 3 obs

○ 2015-12-04 03:19:56
● 2016-03-22 22:41:16
● 2026-08-30 20:12:42

○NSns51.domaincontrol.com2015-08-05 → 2015-12-04 · 4 obs

● 2015-08-05 02:57:40
● 2015-12-04 03:19:56
○ 2016-03-22 22:41:16
○ 2026-08-30 20:12:42

○NSns52.domaincontrol.com2015-08-05 → 2015-12-04 · 4 obs

● 2015-08-05 02:57:40
● 2015-12-04 03:19:56
○ 2016-03-22 22:41:16
○ 2026-08-30 20:12:42

○MXmailstore1.secureserver.net2015-08-05 → 2015-12-04 · 4 obs

● 2015-08-05 02:57:40
● 2015-12-04 03:19:56
○ 2016-03-22 22:41:16
○ 2026-08-30 20:12:42

●MXmxn.mxhichina.com2016-03-22 → 2026-08-30 · 6 obs

○ 2015-12-04 03:19:56
● 2016-03-22 22:41:16
● 2017-04-02 13:43:10
○ 2026-08-30 09:13:28
● 2026-08-30 14:14:54
● 2026-08-30 20:12:42

●MXmxw.mxhichina.com2016-03-22 → 2026-08-30 · 6 obs

○ 2015-12-04 03:19:56
● 2016-03-22 22:41:16
● 2017-04-02 13:43:10
○ 2026-08-30 09:13:28
● 2026-08-30 14:14:54
● 2026-08-30 20:12:42

○MXsmtp.secureserver.net2015-08-05 → 2015-12-04 · 4 obs

● 2015-08-05 02:57:40
● 2015-12-04 03:19:56
○ 2016-03-22 22:41:16
○ 2026-08-30 20:12:42

○A101.201.146.272016-03-22 → 2017-04-02 · 5 obs

○ 2015-12-04 03:19:56
● 2016-03-22 22:41:16
● 2017-04-02 13:43:10
○ 2026-08-30 09:13:28
○ 2026-08-30 20:12:42

●A39.105.5.1442026-08-30 → 2026-08-30 · 3 obs

○ 2026-08-30 09:13:28
● 2026-08-30 14:14:54
● 2026-08-30 20:12:42

○A50.62.116.12015-08-05 → 2015-12-04 · 4 obs

● 2015-08-05 02:57:40
● 2015-12-04 03:19:56
○ 2016-03-22 22:41:16
○ 2026-08-30 20:12:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
codeclassroom.org	dns9.hichina.com, dns10.hichina.com	-

✅ Authoritative Response

Server:139.224.142.121

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for codeclassroom.org (unsigned zone)

⏱️ Timing

Total: 1287ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`39.105.5.144`
NS	2	`dns9.hichina.com, dns10.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

codeclassroom.org directs to one IP number, which is 39.105.5.144.

Name Servers

codeclassroom.org is served by two delegated name servers, dns10.hichina.com and dns9.hichina.com.

codeclassroom.org has the same name server delegation as a number of other domains, such as vees.cn, t8r2e6w0q4a.cyou, fudanhealth.com and two more.

codeclassroom.org at least partially shares name servers with other domains, including unitoday.com, fusionio.net, myspace.com.cn and dsubu.com.

These name servers are frequently seen alongside the name servers ns1.alidns.com, ns2.alidns.com, expirens3.hichina.com and expirens4.hichina.com.

Host names resolving to 9 IP numbers:

dns10.hichina.com carries IP addresses 39.96.153.41, 39.96.153.51 and 47.118.199.201, with 6 other addresses beyond those.

dns9.hichina.com carries IP addresses 39.96.153.42, 39.96.153.52 and 47.118.199.202, with 6 other addresses beyond those.

Mail Servers

The MX records for codeclassroom.org point to two mail servers: mxn.mxhichina.com and mxw.mxhichina.com.

codeclassroom.org has the same mail server arrangement as a number of other domains, for example slpiliao.com, aim-o.com, 36qq.com and two more.

codeclassroom.org shares at least some of its mail servers with other domains — for example jupinbao.cn, sdsealant.com, xtsmedical.com and two more.

These mail servers are frequently paired with the mail servers mx1.qiye.aliyun.com, mx2.qiye.aliyun.com and mx3.qiye.aliyun.com.

Hosts with two IP numbers each:

mxn.mxhichina.com maps to two IP addresses — 47.246.136.231 and 47.246.137.47.

Hosts that resolve to one IP address:

mxw.mxhichina.com points to the IP address 47.246.99.195.

codeclassroom.org - robtex.com