course01.com - dns.ninja

`course01.com`

DNSSEC	⚠️ Not signed
A	39.108.186.86^{🇨🇳 Alibaba-Cloud39.108.128.0/17}
NS	`dns7.hichina.com` ⭐
		A	2408:4009:501::15^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.43^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.63^{🇨🇳 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.}
		A	47.118.199.213^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.43^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.63^{🇨🇳 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,}
		A	139.224.142.123^{🇨🇳 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	`dns8.hichina.com`
		A	2408:4009:501::16^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.44^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.54^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.204^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.214^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.44^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.54^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.114^{🇨🇳 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	139.224.142.124^{🇨🇳 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,}
SOA	`dns7.hichina.com`hostmaster@hichina.com 2026-01-12 #9

`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=1781281633

Same first word

course01.cn

course01.net

course01.online

course01.com

Similar names

source01.com

source10.net

01source.com

source10.com

DNS History

3 records (3 active, 0 former)

●NSdns7.hichina.com2026-04-27 → 2026-06-12 · 2 obs

● 2026-04-27 18:22:34
● 2026-06-12 16:40:22

●NSdns8.hichina.com2026-04-27 → 2026-06-12 · 2 obs

● 2026-04-27 18:22:34
● 2026-06-12 16:40:22

●A39.108.186.862026-04-27 → 2026-06-12 · 2 obs

● 2026-04-27 18:22:34
● 2026-06-12 16:40:22

🔍 DNS Trace

Analysis

IP Addresses

course01.com has exactly one IP address — 39.108.186.86.

course01.cn, course01.net, chaojizb.net plus two other host names have IP numbers in common with course01.com.

Name Servers

course01.com is served by two delegated name servers, dns7.hichina.com and dns8.hichina.com.

The name server configuration of course01.com is shared with other domains, for instance auseek.com, bjsbl.com, yimashijie.com and two others.

The name servers of course01.com overlap at least partially with those of other domains — among them xulele.com, bandwidth.cn, ntts.cn and two more.

These name servers commonly appear alongside the name servers ns1.alidns.com and ns2.alidns.com.

Hosts with 9 IP addresses each:

dns7.hichina.com carries IP addresses 39.96.153.43, 39.96.153.63 and 47.118.199.203, with 6 other addresses beyond those.

dns8.hichina.com carries IP addresses 39.96.153.44, 39.96.153.54 and 47.118.199.204, with 6 other addresses beyond those.