coursemaster.com - dns.ninja

`coursemaster.com`

DNSSEC	⚠️ Not signed
A	198.38.93.188^{🇬🇧 WHG-AUS198.38.93.0/24}
		PTR	`s12011.syd1.stableserver.net`
NS	`ns1.mysecurecloudhost.com` ⭐
		A	13.248.158.180^{🇺🇸 Amazon13.248.144.0/20}
			PTR	`a79764cc55c0ac9c0.awsglobalaccelerator.com`
NS	`ns2.mysecurecloudhost.com`
		A	75.2.118.134^{🇺🇸 Amazon75.2.112.0/20}
			PTR	`abc65dd9a44b5332f.awsglobalaccelerator.com`
NS	`ns3.mysecurecloudhost.com` ⚠️ Not in parent delegation
		A	76.223.26.245^{🇺🇸 Amazon76.223.16.0/20}
			PTR	`a79764cc55c0ac9c0.awsglobalaccelerator.com`
NS	`ns4.mysecurecloudhost.com` ⚠️ Not in parent delegation
		A	99.83.147.209^{🇺🇸 Amazon99.83.144.0/20}
			PTR	`abc65dd9a44b5332f.awsglobalaccelerator.com`
MX	`coursemaster-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:cc31::2^{🇦🇺 Microsoft2a01:111:f000::/36}
			PTR	`mail-sy5pr01cu00902.inbound.protection.outlook.com`
		A	2a01:111:f403:cc31::3^{🇦🇺 Microsoft2a01:111:f000::/36}
			PTR	`mail-sy2pr01cu00503.inbound.protection.outlook.com`
		A	2a01:111:f403:cc33::^{🇦🇺 Microsoft2a01:111:f000::/36}
			PTR	`mail-meupr01cu00200.inbound.protection.outlook.com`
		A	2a01:111:f403:cc33::1^{🇦🇺 Microsoft2a01:111:f000::/36}
			PTR	`mail-meupr01cu00301.inbound.protection.outlook.com`
		A	52.101.149.0^{🇦🇺 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sy2pr01cu00300.inbound.protection.outlook.com`
		A	52.101.149.1^{🇦🇺 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sy8pr01cu00101.inbound.protection.outlook.com`
		A	52.101.149.2^{🇦🇺 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sy5pr01cu00902.inbound.protection.outlook.com`
		A	52.101.151.0^{🇦🇺 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-meupr01cu00200.inbound.protection.outlook.com`
TXT	`v=spf1 ip4:198.38.93.188 include:spf.mysecurecloudhost.com include:spf.protec...`
TXT	`MS=ms65885768`
SOA	`ns1.mysecurecloudhost.com`servers@mysecurecloudhost.com 2026-08-06 #0

`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=1786024764

WOT: SAFE (66/100)

Subdomains

www.coursemaster.com

Same first word

coursemaster.net.au

coursemaster.co

coursemaster.herokuapp.com

coursemaster.com.au

coursemaster.co.uk

coursemaster.com

coursemaster.net

Similar names

DNS History

14 records (6 active, 8 former)

○NSns1.mermaidinthe.net2015-07-01 → 2026-06-08 · 5 obs

○ 2007-10-23 13:49:28
● 2015-07-01 11:09:08
● 2026-06-08 06:11:42
○ 2026-06-11 18:19:24
○ 2026-08-06 14:01:34

●NSns1.mysecurecloudhost.com2026-06-11 → 2026-08-06 · 3 obs

○ 2026-06-08 06:11:42
● 2026-06-11 18:19:24
● 2026-08-06 14:01:34

○NSns2.idx.com.au2007-10-23 → 2007-10-23 · 3 obs

● 2007-10-23 13:49:28
○ 2015-07-01 11:09:08
○ 2026-08-06 14:01:34

○NSns2.mermaidinthe.net2015-07-01 → 2026-06-08 · 5 obs

○ 2007-10-23 13:49:28
● 2015-07-01 11:09:08
● 2026-06-08 06:11:42
○ 2026-06-11 18:19:24
○ 2026-08-06 14:01:34

●NSns2.mysecurecloudhost.com2026-06-11 → 2026-08-06 · 3 obs

○ 2026-06-08 06:11:42
● 2026-06-11 18:19:24
● 2026-08-06 14:01:34

●NSns3.mysecurecloudhost.com2026-06-11 → 2026-08-06 · 3 obs

○ 2026-06-08 06:11:42
● 2026-06-11 18:19:24
● 2026-08-06 14:01:34

●NSns4.mysecurecloudhost.com2026-06-11 → 2026-08-06 · 3 obs

○ 2026-06-08 06:11:42
● 2026-06-11 18:19:24
● 2026-08-06 14:01:34

○NSvir.idx.com.au2007-10-23 → 2007-10-23 · 3 obs

● 2007-10-23 13:49:28
○ 2015-07-01 11:09:08
○ 2026-08-06 14:01:34

●MXcoursemaster-com.mail.protection.outlook.com2015-07-01 → 2026-08-06 · 3 obs

○ 2007-10-23 13:49:28
● 2015-07-01 11:09:08
● 2026-08-06 14:01:34

○MXin.sjc.mx.trendmicro.com2015-07-01 → 2017-05-21 · 5 obs

○ 2007-10-23 13:49:28
● 2015-07-01 11:09:08
● 2017-05-21 22:51:44
○ 2026-07-21 06:19:02
○ 2026-08-06 14:01:34

○MXpop.idx.com.au2007-10-23 → 2007-10-23 · 3 obs

● 2007-10-23 13:49:28
○ 2015-07-01 11:09:08
○ 2026-08-06 14:01:34

○A192.185.14.62015-07-01 → 2016-07-12 · 5 obs

○ 2007-10-23 13:49:28
● 2015-07-01 11:09:08
● 2016-07-12 23:35:00
○ 2017-05-21 22:51:44
○ 2026-08-06 14:01:34

○A192.185.14.672017-05-21 → 2026-06-08 · 5 obs

○ 2016-07-12 23:35:00
● 2017-05-21 22:51:44
● 2026-06-08 06:11:42
○ 2026-06-11 18:19:24
○ 2026-08-06 14:01:34

●A198.38.93.1882026-06-11 → 2026-08-06 · 3 obs

○ 2026-06-08 06:11:42
● 2026-06-11 18:19:24
● 2026-08-06 14:01:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, g.gtld-servers.net, a.gtld-servers.net, m.gtld-servers.net...	-
coursemaster.com	ns1.mysecurecloudhost.com, ns2.mysecurecloudhost.com	2 records

✅ Authoritative Response

Server:75.2.118.134

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coursemaster.com (unsigned zone)

⏱️ Timing

Total: 212ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`198.38.93.188`
NS	4	`ns3.mysecurecloudhost.com, ns2.mysecurecloudhost.com...`
MX	1	`coursemaster-com.mail.protection.outlook`
TXT	2	`MS=ms65885768, v=spf1 ip4:198.38.93.188 include:spf.mys`
SOA	1	`ns1.mysecurecloudhost.com servers.mysecu`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.mysecurecloudhost.com, ns2.mysecurecloudhost.com)

Analysis

Hierarchy

coursemaster.com serves as the parent of www.coursemaster.com.

IP Addresses

coursemaster.com resolves to one IP address: 198.38.93.188.

iaqtech.com.au, nanadeleplanque.com, jacl.com.au and two other host names share IP numbers with coursemaster.com.

Name Servers

The authoritative name servers for coursemaster.com are ns1.mysecurecloudhost.com, ns2.mysecurecloudhost.com, ns3.mysecurecloudhost.com and ns4.mysecurecloudhost.com.

coursemaster.com has at least partial name server overlap with other domains, such as gastroneuquen.com.ar, idigital.org.br, jagerlink.com and two others.

These name servers tend to appear together with the name servers ns1.hostica.net, ns2.hostica.net and ns3.hostica.net.

Each of the four hosts ns1.mysecurecloudhost.com, ns2.mysecurecloudhost.com, ns3.mysecurecloudhost.com and ns4.mysecurecloudhost.com points to a single IP address — ns1.mysecurecloudhost.com points to 13.248.158.180, ns2.mysecurecloudhost.com points to 75.2.118.134, ns3.mysecurecloudhost.com points to 76.223.26.245 and ns4.mysecurecloudhost.com points to 99.83.147.209.

Mail Servers

Mail for coursemaster.com is handled by a single mail server, coursemaster-com.mail.protection.outlook.com.

coursemaster-com.mail.protection.outlook.com resolves to 8 IP addresses — 52.101.149.0, 52.101.149.1, 52.101.149.2 and 5 others.