coursekey.com - dns.ninja

`coursekey.com`

DNSSEC	⚠️ Not signed
A	199.60.103.73^{🇺🇸 CLOUDFLARESPECTRUM199.60.103.0/24 MNT-HUBSP-8 route 199.060.103.000/24 AS209242}
A	199.60.103.173^{🇺🇸 CLOUDFLARESPECTRUM199.60.103.0/24 MNT-HUBSP-8 route 199.060.103.000/24 AS209242}
NS	`ns-1268.awsdns-30.org` ⭐
		A	2600:9000:5304:f400::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1268.awsdns-30.org`
		A	205.251.196.244^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1268.awsdns-30.org`
NS	`ns-1563.awsdns-03.co.uk`
		A	2600:9000:5306:1b00::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1563.awsdns-03.co.uk`
		A	205.251.198.27^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1563.awsdns-03.co.uk`
NS	`ns-251.awsdns-31.com`
		A	2600:9000:5300:fb00::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-251.awsdns-31.com`
		A	205.251.192.251^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-251.awsdns-31.com`
NS	`ns-599.awsdns-10.net`
		A	2600:9000:5302:5700::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-599.awsdns-10.net`
		A	205.251.194.87^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-599.awsdns-10.net`
MX	`coursekey-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c946::6^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-ch5pr02cu00406.inbound.protection.outlook.com`
		A	2a01:111:f403:f909::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bn6pr04cu00200.inbound.protection.outlook.com`
		A	2a01:111:f403:f90b::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bn6pr04cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:f910::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-cy5pr03cu00300.inbound.protection.outlook.com`
		A	52.101.10.18^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bn8pr05cu00302.inbound.protection.outlook.com`
		A	52.101.40.2^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-cy1pr05cu00402.inbound.protection.outlook.com`
		A	52.101.42.18^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-co1pr03cu00302.inbound.protection.outlook.com`
		A	52.101.50.7^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-co1pr21cu00207.inbound.protection.outlook.com`
TXT	`MS=ms10683167`
TXT	`ca3-47dcefb5d77546ecb9cf27ca59503bb9`
TXT	`detectify-verification=c992a5e7963862a7c1b575e1bada26e1`
TXT	`google-site-verification=8Tur37VuMFLBkpyAdmq0mcFRRswrKPHPcCc4GhlfNBE`
TXT	`google-site-verification=Eu7D8v9zu0qbapARruR1eUHONIFL5h7JWdZNWuDTXYo`
TXT	`google-site-verification=Y7BFbECgLzEz-o9_fny6JzluoGEsADFDqLyUZegcEa0`
TXT	`google-site-verification=_bCf0UwTbB7aN1Pc06kSj4fScStc6ni2izrBFSvXQg4`
TXT	`openai-domain-verification=dv-71vz1icE146oAr6yceiuyWsI`
TXT	`v=spf1 mx include:spf.autopilothq.com include:sendgrid.net include:mailgun.or...`
SOA	`ns-1268.awsdns-30.org`awsdns-hostmaster@amazon.com serial=1

`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=1785738597

Subdomains

www.coursekey.com

Same first word

coursekey.com

Similar names

DNS History

20 records (7 active, 13 former)

○NSandy.ns.cloudflare.com2016-05-04 → 2018-07-08 · 5 obs

○ 2016-02-06 06:53:46
● 2016-05-04 17:30:34
● 2018-07-08 19:01:26
○ 2026-02-20 03:41:58
○ 2026-08-03 06:56:36

○NSmary.ns.cloudflare.com2016-05-04 → 2018-07-08 · 5 obs

○ 2016-02-06 06:53:46
● 2016-05-04 17:30:34
● 2018-07-08 19:01:26
○ 2026-02-20 03:41:58
○ 2026-08-03 06:56:36

●NSns-1268.awsdns-30.org2026-02-20 → 2026-08-03 · 3 obs

○ 2018-07-08 19:01:26
● 2026-02-20 03:41:58
● 2026-08-03 06:56:36

●NSns-1563.awsdns-03.co.uk2026-02-20 → 2026-08-03 · 3 obs

○ 2018-07-08 19:01:26
● 2026-02-20 03:41:58
● 2026-08-03 06:56:36

●NSns-251.awsdns-31.com2026-02-20 → 2026-08-03 · 3 obs

○ 2018-07-08 19:01:26
● 2026-02-20 03:41:58
● 2026-08-03 06:56:36

●NSns-599.awsdns-10.net2026-02-20 → 2026-08-03 · 3 obs

○ 2018-07-08 19:01:26
● 2026-02-20 03:41:58
● 2026-08-03 06:56:36

○NSns15.domaincontrol.com2015-06-23 → 2016-02-06 · 4 obs

● 2015-06-23 17:49:48
● 2016-02-06 06:53:46
○ 2016-05-04 17:30:34
○ 2026-08-03 06:56:36

○NSns16.domaincontrol.com2015-06-23 → 2016-02-06 · 4 obs

● 2015-06-23 17:49:48
● 2016-02-06 06:53:46
○ 2016-05-04 17:30:34
○ 2026-08-03 06:56:36

○MXalt1.aspmx.l.google.com2015-06-23 → 2018-07-08 · 4 obs

● 2015-06-23 17:49:48
● 2018-07-08 19:01:26
○ 2026-02-20 03:41:58
○ 2026-08-03 06:56:36

○MXalt2.aspmx.l.google.com2015-06-23 → 2018-07-08 · 4 obs

● 2015-06-23 17:49:48
● 2018-07-08 19:01:26
○ 2026-02-20 03:41:58
○ 2026-08-03 06:56:36

○MXaspmx.l.google.com2015-06-23 → 2018-07-08 · 4 obs

● 2015-06-23 17:49:48
● 2018-07-08 19:01:26
○ 2026-02-20 03:41:58
○ 2026-08-03 06:56:36

○MXaspmx2.googlemail.com2015-06-23 → 2018-07-08 · 4 obs

● 2015-06-23 17:49:48
● 2018-07-08 19:01:26
○ 2026-02-20 03:41:58
○ 2026-08-03 06:56:36

○MXaspmx3.googlemail.com2015-06-23 → 2018-07-08 · 4 obs

● 2015-06-23 17:49:48
● 2018-07-08 19:01:26
○ 2026-02-20 03:41:58
○ 2026-08-03 06:56:36

●MXcoursekey-com.mail.protection.outlook.com2026-02-20 → 2026-08-03 · 3 obs

○ 2018-07-08 19:01:26
● 2026-02-20 03:41:58
● 2026-08-03 06:56:36

○A199.16.172.902026-02-20 → 2026-04-22 · 5 obs

○ 2018-07-08 19:01:26
● 2026-02-20 03:41:58
● 2026-04-22 09:35:16
○ 2026-04-25 03:43:24
○ 2026-08-03 06:56:36

○A199.16.173.1222026-02-20 → 2026-04-22 · 5 obs

○ 2018-07-08 19:01:26
● 2026-02-20 03:41:58
● 2026-04-22 09:35:16
○ 2026-04-25 03:43:24
○ 2026-08-03 06:56:36

●A199.60.103.1732026-04-25 → 2026-08-03 · 3 obs

○ 2026-04-22 09:35:16
● 2026-04-25 03:43:24
● 2026-08-03 06:56:36

●A199.60.103.732026-04-25 → 2026-08-03 · 3 obs

○ 2026-04-22 09:35:16
● 2026-04-25 03:43:24
● 2026-08-03 06:56:36

○A46.105.225.1002016-05-04 → 2018-07-08 · 5 obs

○ 2016-02-06 06:53:46
● 2016-05-04 17:30:34
● 2018-07-08 19:01:26
○ 2026-02-20 03:41:58
○ 2026-08-03 06:56:36

○A72.32.147.1652015-06-23 → 2016-02-06 · 4 obs

● 2015-06-23 17:49:48
● 2016-02-06 06:53:46
○ 2016-05-04 17:30:34
○ 2026-08-03 06:56:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, i.gtld-servers.net, b.gtld-servers.net, k.gtld-servers.net...	-
coursekey.com	ns-251.awsdns-31.com, ns-599.awsdns-10.net, ns-1563.awsdns-03.co.uk, ns-1268.awsdns-30.org	2 records

✅ Authoritative Response

Server:205.251.194.87

NS records: ns-251.awsdns-31.com, ns-599.awsdns-10.net, ns-1563.awsdns-03.co.uk, ns-1268.awsdns-30.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coursekey.com (unsigned zone)

⏱️ Timing

Total: 323ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`199.60.103.73, 199.60.103.173`
NS	4	`ns-1268.awsdns-30.org, ns-1563.awsdns-03.co.uk...`
MX	1	`coursekey-com.mail.protection.outlook.co`
TXT	9	`MS=ms10683167, ca3-47dcefb5d77546ecb9cf27ca59503bb9...`
SOA	1	`ns-1268.awsdns-30.org awsdns-hostmaster.`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-251.awsdns-31.com, ns-251.awsdns-31.com)

Analysis

Hierarchy

www.coursekey.com is delegated beneath coursekey.com.

IP Addresses

coursekey.com has two IP addresses: 199.60.103.73 and 199.60.103.173

Among the host names that share IP numbers with coursekey.com are oceantech.no, orca.co.uk, spidergap.com and two others.

Name Servers

The domain coursekey.com is delegated to these four name servers: ns-251.awsdns-31.com, ns-599.awsdns-10.net, ns-1268.awsdns-30.org and ns-1563.awsdns-03.co.uk.

There is at least partial name server overlap between coursekey.com and other domains — dp.fammit.com, gitforums.org, capha-auditor.ru and two more among them.

All four hostnames — ns-251.awsdns-31.com, ns-599.awsdns-10.net, ns-1268.awsdns-30.org and ns-1563.awsdns-03.co.uk — resolve to two IP numbers apiece: ns-251.awsdns-31.com to 205.251.192.251 and 2600:9000:5300:fb00::1; ns-599.awsdns-10.net to 205.251.194.87 and 2600:9000:5302:5700::1; ns-1268.awsdns-30.org to 205.251.196.244 and 2600:9000:5304:f400::1; ns-1563.awsdns-03.co.uk to 205.251.198.27 and 2600:9000:5306:1b00::1.

Mail Servers

coursekey.com routes its mail through a single mail server, coursekey-com.mail.protection.outlook.com.

coursekey-com.mail.protection.outlook.com directs to 8 IP numbers, including 52.101.10.18, 52.101.40.2 and 52.101.42.18, along with 5 other.