`cryptocourse101.com`

DNSSEC	⚠️ Not signed
A	8.218.164.5^{🇭🇰 Alibaba-Cloud8.218.128.0/17 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
NS	`dns17.hichina.com` ⭐
		A	2408:4009:501::25^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.40^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.60^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.200^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.220^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.40^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.60^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.100^{🇨🇳 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	139.224.142.110^{🇨🇳 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	`dns18.hichina.com`
		A	2408:4009:501::26^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.38^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.61^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.198^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.222^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.38^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.61^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.98^{🇨🇳 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	139.224.142.108^{🇨🇳 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	`dns17.hichina.com`hostmaster@hichina.com 2026-01-09 #13

`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=1774695152

Subdomains

acdn.cryptocourse101.com

Same first word

cryptocourse101.com

DNS History

6 records (3 active, 3 former)

●NSdns17.hichina.com2026-02-17 → 2026-03-28 · 3 obs

○ 2017-11-24 16:42:16
● 2026-02-17 17:25:36
● 2026-03-28 10:54:02

●NSdns18.hichina.com2026-02-17 → 2026-03-28 · 3 obs

○ 2017-11-24 16:42:16
● 2026-02-17 17:25:36
● 2026-03-28 10:54:02

○NSns75.domaincontrol.com2017-11-24 → 2017-11-24 · 3 obs

● 2017-11-24 16:42:16
○ 2026-02-17 17:25:36
○ 2026-03-28 10:54:02

○NSns76.domaincontrol.com2017-11-24 → 2017-11-24 · 3 obs

● 2017-11-24 16:42:16
○ 2026-02-17 17:25:36
○ 2026-03-28 10:54:02

○A184.168.221.832017-11-24 → 2017-11-24 · 3 obs

● 2017-11-24 16:42:16
○ 2026-02-17 17:25:36
○ 2026-03-28 10:54:02

●A8.218.164.52026-02-17 → 2026-03-28 · 3 obs

○ 2017-11-24 16:42:16
● 2026-02-17 17:25:36
● 2026-03-28 10:54:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, i.gtld-servers.net, a.gtld-servers.net, c.gtld-servers.net...	-
cryptocourse101.com	dns17.hichina.com, dns18.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.40

NS records: dns17.hichina.com, dns18.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cryptocourse101.com (unsigned zone)

⏱️ Timing

Total: 690ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`8.218.164.5`
NS	2	`dns18.hichina.com, dns17.hichina.com`
SOA	1	`dns17.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns17.hichina.com, dns17.hichina.com, dns17.hichina.com...)

Analysis

Hierarchy

cryptocourse101.com is the parent of acdn.cryptocourse101.com.

IP Addresses

cryptocourse101.com points to IP number 8.218.164.5.

Other host names, for instance, acdn.cryptocourse101.com share IP numbers with cryptocourse101.com.

Name Servers

cryptocourse101.com is delegated to two name servers: dns17.hichina.com and dns18.hichina.com.

cryptocourse101.com uses the same name server setup as other domains such as gs-net.com, xintuobao.cn, tjcleanroom.com, wson.cn and gna-inter.com.

cryptocourse101.com shares name servers with other domains at least partially, for example ifdo.net, zhengxin88.com, 1000zhi.com, theworldofchinese.com and dushujingsai.com.

These name servers are commonly used with the name servers expirens3.hichina.com and expirens4.hichina.com.

Host names with nine IP numbers:

dns17.hichina.com points to: 2408:4009:501::25, 39.96.153.40, 39.96.153.60, 47.118.199.200, 47.118.199.220, 120.76.107.40, 120.76.107.60, 139.224.142.100 and 139.224.142.110.

dns18.hichina.com points to: 2408:4009:501::26, 39.96.153.38, 39.96.153.61, 47.118.199.198, 47.118.199.222, 120.76.107.38, 120.76.107.61, 139.224.142.98 and 139.224.142.108.

cryptocourse101.com - robtex.com