`choolean.net`

DNSSEC	⚠️ Not signed
A	180.153.21.62^{🇨🇳 SHANGHAITELECOM180.153.16.0/20 SHIDC}
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	`mail.choolean.net` ⭐
		A	180.153.21.62^{🇨🇳 SHANGHAITELECOM180.153.16.0/20 SHIDC}
SOA	`dns9.hichina.com`hostmaster@hichina.com 2026-01-12 #9

`net`

	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=1774866897

MX for

choolean.com

Subdomains

mail.choolean.net

Same first word

choolean.net

choolean.com

Similar names

hooclean.com

ecoolhan.com

noahcole.net

oncoheal.com

noahcole.com

DNS History

6 records (4 active, 2 former)

●NSdns10.hichina.com2017-01-04 → 2026-03-30 · 2 obs

● 2017-01-04 05:06:26
● 2026-03-30 10:54:32

●NSdns9.hichina.com2017-01-04 → 2026-03-30 · 2 obs

● 2017-01-04 05:06:26
● 2026-03-30 10:54:32

●MXmail.choolean.net2026-03-16 → 2026-03-30 · 2 obs

● 2026-03-16 23:58:20
● 2026-03-30 10:54:32

○A180.153.21.2302018-01-18 → 2018-01-18 · 4 obs

○ 2017-01-04 05:06:26
● 2018-01-18 05:01:42
○ 2026-03-16 23:58:20
○ 2026-03-30 10:54:32

●A180.153.21.622026-03-16 → 2026-03-30 · 3 obs

○ 2018-01-18 05:01:42
● 2026-03-16 23:58:20
● 2026-03-30 10:54:32

○A222.68.17.2442017-01-04 → 2017-01-04 · 3 obs

● 2017-01-04 05:06:26
○ 2018-01-18 05:01:42
○ 2026-03-30 10:54:32

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:39.96.153.42

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for choolean.net (unsigned zone)

⏱️ Timing

Total: 4021ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`180.153.21.62`
NS	2	`dns9.hichina.com, dns10.hichina.com`
MX	1	`mail.choolean.net (pri: 10)`
SOA	1	`dns9.hichina.com hostmaster.hichina.com`

Analysis

Hierarchy

choolean.net is a parent of mail.choolean.net.

Mail Server Role

The mail server for choolean.com is choolean.net.

IP Addresses

choolean.net points to a single IP number: 180.153.21.62.

Other host names, for instance mail.choolean.net, share IP numbers with choolean.net.

Name Servers

Delegation for choolean.net rests with two name servers, dns10.hichina.com and dns9.hichina.com.

choolean.net shares the same name server setup as other domains, including yuanxinjituan.cn, techynova.com, shinuo360.com, memould.com and ngcc.cn.

choolean.net at least partially shares name servers with other domains, for instance 19bbk.com, djd9lakm19.xyz, unilook.cn, dgwofu.com and makebestmusic.com.cn.

These name servers are commonly used alongside expirens3.hichina.com, expirens4.hichina.com, ns1.alidns.com and ns2.alidns.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

choolean.net is handled by a single mail server, mail.choolean.net.

choolean.net uses the same mail server setup as other domains, such as mail.choolean.net.

mail.choolean.net points to a single IP: 180.153.21.62.

choolean.net - robtex.com

choolean.net

net