`cdrbonlinecourse.com`

DNSSEC	⚠️ Not signed
A	156.229.144.198^{🇺🇸 USZNI-AS-AP156.229.144.0/23}
NS	`ns1.dns.com` ⭐
		A	2001:df2:f080:2::1:1^{🇭🇰 HKCICL-AS-AP2001:df2:f080::/48 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED}
		A	154.23.191.128^{🇺🇸 HKCICL-AS-AP154.23.191.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED}
		A	154.86.21.128^{🇭🇰 HKCICL-AS-AP154.86.21.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED}
NS	`ns2.dns.com`
		A	2001:df2:f080:2::1:2^{🇭🇰 HKCICL-AS-AP2001:df2:f080::/48 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED}
		A	154.23.191.129^{🇺🇸 HKCICL-AS-AP154.23.191.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED}
		A	154.86.21.129^{🇭🇰 HKCICL-AS-AP154.86.21.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED}
SOA	`ns1.dns.com`admin@dns.com serial=1767521836

`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=1774615147

Same first word

cdrbonlinecourse.com

DNS History

3 records (3 active, 0 former)

●NSns1.dns.com2026-03-01 → 2026-03-27 · 2 obs

● 2026-03-01 17:53:00
● 2026-03-27 12:49:30

●NSns2.dns.com2026-03-01 → 2026-03-27 · 2 obs

● 2026-03-01 17:53:00
● 2026-03-27 12:49:30

●A156.229.144.1982026-03-01 → 2026-03-27 · 2 obs

● 2026-03-01 17:53:00
● 2026-03-27 12:49:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
cdrbonlinecourse.com	ns1.dns.com, ns2.dns.com	6 records

✅ Authoritative Response

Server:154.23.191.129

NS records: ns1.dns.com, ns2.dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cdrbonlinecourse.com (unsigned zone)

⏱️ Timing

Total: 219ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`156.229.144.198`
NS	2	`ns1.dns.com, ns2.dns.com`
SOA	1	`ns1.dns.com admin.dns.com`

📌 Glue Records Collected

Total: 6

Out-of-bailiwick: 6 (ns1.dns.com, ns1.dns.com, ns1.dns.com...)

Analysis

IP Addresses

cdrbonlinecourse.com resolves to one IP number: 156.229.144.198.

other host names including www.js-lean.com, ayctjx.com, yangzundesign.com, m.yzsgj.top and m.gf52.com share IP numbers with cdrbonlinecourse.com.

Name Servers

cdrbonlinecourse.com is delegated to two name servers ns1.dns.com and ns2.dns.com.

cdrbonlinecourse.com shares the same name server setup as other domains, for instance ycwkj.com, 019.tv, 438498.com, cdqsjd.com and suncake.cn.

Host names with three IPs:

ns1.dns.com points to 2001:df2:f080:2::1:1, 154.23.191.128 and 154.86.21.128.

ns2.dns.com points to 2001:df2:f080:2::1:2, 154.23.191.129 and 154.86.21.129.

cdrbonlinecourse.com - robtex.com