WWW.ROBTEX.COM - thegreatcourses.com

Search for IP or hostnames:

thegreatcourses.com checked at 2025-10-09T17:33:47.750Z 169ms 302/302/302 100% R:9

`thegreatcourses.com`

NS	`ns-359.awsdns-44.com`
		A	2600:9000:5301:6700::1^{🇺🇸 Amazon}
			PTR	`ns-359.awsdns-44.com`
		A	205.251.193.103^{🇺🇸 Amazon}
			PTR	`ns-359.awsdns-44.com`
NS	`ns-546.awsdns-04.net`
		A	2600:9000:5302:2200::1^{🇺🇸 Amazon}
			PTR	`ns-546.awsdns-04.net`
		A	205.251.194.34^{🇺🇸 Amazon}
			PTR	`ns-546.awsdns-04.net`
NS	`ns-1093.awsdns-08.org`
		A	2600:9000:5304:4500::1^{🇺🇸 Amazon}
			PTR	`ns-1093.awsdns-08.org`
		A	205.251.196.69^{🇺🇸 Amazon}
			PTR	`ns-1093.awsdns-08.org`
MX	`cluster2.us.messagelabs.com`
		A	67.219.246.208^{🇺🇸 Google}
			PTR	`mail907.messagelabs.com`
		A	67.219.246.210^{🇺🇸 Google}
			PTR	`mail909.messagelabs.com`
		A	67.219.246.215^{🇺🇸 Google}
			PTR	`mail901.messagelabs.com`
		A	67.219.247.106^{🇺🇸 Google}
			PTR	`mail923.messagelabs.com`
		A	67.219.247.202^{🇺🇸 Google}
			PTR	`mail930.messagelabs.com`
		A	67.219.247.204^{🇺🇸 Google}
			PTR	`mail931.messagelabs.com`
		A	67.219.250.212^{🇺🇸 Google}
			PTR	`mail943.messagelabs.com`
		A	67.219.250.215^{🇺🇸 Google}
			PTR	`mail948.messagelabs.com`
MX	`cluster2a.us.messagelabs.com`
		A	34.75.172.113^{🇺🇸 Google}
			PTR	`113.172.75.34.bc.googleusercontent.com`
NS	`ns-1953.awsdns-52.co.uk`
		A	2600:9000:5307:a100::1^{🇺🇸 Amazon}
			PTR	`ns-1953.awsdns-52.co.uk`
		A	205.251.199.161^{🇺🇸 Amazon}
			PTR	`ns-1953.awsdns-52.co.uk`
MX	`thegreatcourses-com.mail.protection.outlook.com`
		A	2a01:111:f403:c92c::^{🇺🇸 Microsoft}
			PTR	`mail-dm5pr02cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:f805::1^{🇺🇸 Microsoft}
			PTR	`mail-co1pr03cu00301.inbound.protection.outlook.com`
		A	2a01:111:f403:f807::^{🇺🇸 Microsoft}
			PTR	`mail-co1pr05cu00200.inbound.protection.outlook.com`
		A	2a01:111:f403:f910::^{🇺🇸 Microsoft}
			PTR	`mail-cy5pr03cu00300.inbound.protection.outlook.com`
		A	52.101.9.26^{🇺🇸 Microsoft}
			PTR	`mail-bl0pr02cu00702.inbound.protection.outlook.com`
		A	52.101.40.2^{🇺🇸 Microsoft}
			PTR	`mail-cy1pr05cu00402.inbound.protection.outlook.com`
		A	52.101.40.4^{🇺🇸 Microsoft}
			PTR	`mail-cy5pr03cu00204.inbound.protection.outlook.com`
		A	52.101.41.6^{🇺🇸 Microsoft}
			PTR	`mail-sj0pr03cu01406.inbound.protection.outlook.com`
A	3.93.98.245^{🇺🇸 Amazon}
		PTR	`ec2-3-93-98-245.compute-1.amazonaws.com`
A	44.197.77.85^{🇺🇸 Amazon}
		PTR	`ec2-44-197-77-85.compute-1.amazonaws.com`

`com`

	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`

rank #24088 globally
rank #12373 in the tld

Up

lib.thegreatcourses.com

www.thegreatcourses.com

Starts with same word

thegreatcourses.com

thegreatcourses.co.uk

Starts similarily

thegreatcourses.com

thegreatcourses.co.uk

AI analysis

thegreatcourses.com is a parent of lib.thegreatcourses.com and www.thegreatcourses.com.

thegreatcourses.com points to two IP numbers: 3.93.98.245 and 44.197.77.85.

Other host names such as ec2-44-197-77-85.compute-1.amazonaws.com, ec2-3-93-98-245.compute-1.amazonaws.com, www.thegreatcourses.co.uk, thegreatcourses.co.uk and www.thegreatcourses.com share IPs with thegreatcourses.com.

thegreatcourses.com is delegated to four name servers: ns-359.awsdns-44.com, ns-546.awsdns-04.net, ns-1093.awsdns-08.org and ns-1953.awsdns-52.co.uk.

thegreatcourses.com at least partially shares name servers with other domains, for example e-postcodeloterij.com, ewallet.com.au, suco777.cc, californiaseismic.com and newcastlegateshead.com.

these name servers commonly pair with ns-948.awsdns-54.net, ns-374.awsdns-46.com, ns-1307.awsdns-35.org and ns-1260.awsdns-29.org.

Host names with two IP numbers:

ns-359.awsdns-44.com points to: 2600:9000:5301:6700::1 and 205.251.193.103

ns-546.awsdns-04.net points to: 2600:9000:5302:2200::1 and 205.251.194.34

ns-1093.awsdns-08.org points to: 2600:9000:5304:4500::1 and 205.251.196.69

ns-1953.awsdns-52.co.uk points to: 2600:9000:5307:a100::1 and 205.251.199.161

thegreatcourses.com is handled by three mail servers: cluster2.us.messagelabs.com, cluster2a.us.messagelabs.com and thegreatcourses-com.mail.protection.outlook.com.

thegreatcourses.com shares at least partially some mail servers with other domains, for instance catfootwear.ru, sekisuiurethane.co.jp, orchardsoft.com, innovatewithdairy.net and ezinetmail.com.

Eight IP numbers for two host names:

cluster2.us.messagelabs.com points to: 67.219.246.208, 67.219.246.210, 67.219.246.215, 67.219.247.106, 67.219.247.202, 67.219.247.204, 67.219.250.212 and 67.219.250.215.

thegreatcourses-com.mail.protection.outlook.com points to: 2a01:111:f403:c92c::, 2a01:111:f403:f805::1, 2a01:111:f403:f807::, 2a01:111:f403:f910::, 52.101.9.26, 52.101.40.2, 52.101.40.4 and 52.101.41.6.

One IP number:

cluster2a.us.messagelabs.com points to: 34.75.172.113.

dbq