`courselor.com`

DNSSEC	⚠️ Not signed
A	3.164.6.53^{🇺🇸 Amazon3.164.4.0/22}
		PTR	`server-3-164-6-53.gru1.r.cloudfront.net`
A	3.164.6.63^{🇺🇸 Amazon3.164.4.0/22}
A	3.164.6.66^{🇺🇸 Amazon3.164.4.0/22}
A	3.164.6.120^{🇺🇸 Amazon3.164.4.0/22}
NS	`ns-1052.awsdns-03.org` ⭐
		A	2600:9000:5304:1c00::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1052.awsdns-03.org`
		A	205.251.196.28^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1052.awsdns-03.org`
NS	`ns-142.awsdns-17.com`
		A	2600:9000:5300:8e00::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-142.awsdns-17.com`
		A	205.251.192.142^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-142.awsdns-17.com`
NS	`ns-1859.awsdns-40.co.uk`
		A	2600:9000:5307:4300::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1859.awsdns-40.co.uk`
		A	205.251.199.67^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1859.awsdns-40.co.uk`
NS	`ns-710.awsdns-24.net`
		A	2600:9000:5302:c600::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-710.awsdns-24.net`
		A	205.251.194.198^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-710.awsdns-24.net`
SOA	`ns-1052.awsdns-03.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=1774958702

Same first word

courselor.com

Similar names

surecolor.com.br

lucrorseo.com

surecolor.de

surecolor.ru

surecolor.com

DNS History

44 records (8 active, 36 former)

●NSns-1052.awsdns-03.org2026-03-07 → 2026-03-31 · 3 obs

○ 2016-01-22 23:52:10
● 2026-03-07 02:14:28
● 2026-03-31 12:25:00

●NSns-142.awsdns-17.com2026-03-07 → 2026-03-31 · 3 obs

○ 2016-01-22 23:52:10
● 2026-03-07 02:14:28
● 2026-03-31 12:25:00

●NSns-1859.awsdns-40.co.uk2026-03-07 → 2026-03-31 · 3 obs

○ 2016-01-22 23:52:10
● 2026-03-07 02:14:28
● 2026-03-31 12:25:00

●NSns-710.awsdns-24.net2026-03-07 → 2026-03-31 · 3 obs

○ 2016-01-22 23:52:10
● 2026-03-07 02:14:28
● 2026-03-31 12:25:00

○NSns1.sedoparking.com2015-06-18 → 2015-11-04 · 4 obs

● 2015-06-18 07:32:10
● 2015-11-04 18:09:36
○ 2016-01-22 23:52:10
○ 2026-03-31 12:25:00

○NSns2.sedoparking.com2015-06-18 → 2015-11-04 · 4 obs

● 2015-06-18 07:32:10
● 2015-11-04 18:09:36
○ 2016-01-22 23:52:10
○ 2026-03-31 12:25:00

○MXmail.nickstel.com2015-06-18 → 2015-11-04 · 4 obs

● 2015-06-18 07:32:10
● 2015-11-04 18:09:36
○ 2016-01-22 23:52:10
○ 2026-03-31 12:25:00

○A13.227.207.1002026-03-31 → 2026-03-31 · 5 obs

○ 2026-03-31 09:13:02
● 2026-03-31 10:27:58
● 2026-03-31 11:11:26
○ 2026-03-31 12:24:58
○ 2026-03-31 12:25:00

○A13.227.207.1062026-03-31 → 2026-03-31 · 5 obs

○ 2026-03-31 09:13:02
● 2026-03-31 10:27:58
● 2026-03-31 11:11:26
○ 2026-03-31 12:24:58
○ 2026-03-31 12:25:00

○A13.227.207.1192026-03-31 → 2026-03-31 · 5 obs

○ 2026-03-31 09:13:02
● 2026-03-31 10:27:58
● 2026-03-31 11:11:26
○ 2026-03-31 12:24:58
○ 2026-03-31 12:25:00

○A13.227.207.1222026-03-31 → 2026-03-31 · 5 obs

○ 2026-03-31 09:13:02
● 2026-03-31 10:27:58
● 2026-03-31 11:11:26
○ 2026-03-31 12:24:58
○ 2026-03-31 12:25:00

○A18.245.218.1252026-03-07 → 2026-03-30 · 71 obs

○ 2016-01-22 23:52:10
● 2026-03-07 02:14:28
○ 2026-03-07 03:37:42
● 2026-03-07 21:27:46
○ 2026-03-08 08:06:06
● 2026-03-08 11:09:04
○ 2026-03-08 18:12:08
● 2026-03-09 02:56:26
● 2026-03-09 07:23:36
○ 2026-03-09 11:04:40
○ 2026-03-09 12:55:22
● 2026-03-10 02:51:24
○ 2026-03-10 10:43:56
● 2026-03-10 13:07:54
● 2026-03-15 02:42:08
○ 2026-03-15 17:54:30
● 2026-03-15 21:29:12
● 2026-03-16 01:38:46
○ 2026-03-16 03:15:52
● 2026-03-16 04:33:52
● 2026-03-16 05:08:26
○ 2026-03-16 14:33:38
○ 2026-03-17 04:40:16
● 2026-03-17 08:56:02
○ 2026-03-17 11:27:56
● 2026-03-17 21:34:18
○ 2026-03-17 22:55:54
● 2026-03-18 02:06:50
○ 2026-03-18 14:46:32
○ 2026-03-18 22:01:18
● 2026-03-19 01:35:02
○ 2026-03-20 00:14:08
● 2026-03-20 03:13:28
○ 2026-03-20 08:00:24
● 2026-03-20 10:36:28
● 2026-03-20 23:27:12
○ 2026-03-21 01:35:26
● 2026-03-22 01:03:14
○ 2026-03-23 00:13:38
● 2026-03-23 04:02:48
○ 2026-03-24 07:02:04
○ 2026-03-24 13:18:46
● 2026-03-24 16:32:02
● 2026-03-24 19:14:20
○ 2026-03-24 20:40:30
● 2026-03-25 01:23:10
○ 2026-03-25 03:28:28
○ 2026-03-26 01:27:42
● 2026-03-26 04:38:00
● 2026-03-26 07:28:58
○ 2026-03-26 11:50:28
○ 2026-03-27 00:42:26
● 2026-03-27 01:51:10
○ 2026-03-27 02:24:34
○ 2026-03-27 15:45:30
● 2026-03-27 16:39:50
○ 2026-03-28 00:12:56
● 2026-03-28 02:26:58
○ 2026-03-28 07:01:26
● 2026-03-28 13:22:28
● 2026-03-28 20:01:00
○ 2026-03-29 00:11:18
○ 2026-03-30 00:11:50
● 2026-03-30 02:16:14
○ 2026-03-30 03:16:52
● 2026-03-30 04:29:54
○ 2026-03-30 05:16:58
● 2026-03-30 05:46:58
● 2026-03-30 09:35:10
○ 2026-03-30 11:16:48
○ 2026-03-31 12:25:00

○A18.245.218.202026-03-07 → 2026-03-30 · 71 obs

○A18.245.218.242026-03-07 → 2026-03-30 · 71 obs

○A18.245.218.372026-03-07 → 2026-03-30 · 71 obs

●A3.164.6.1202026-03-29 → 2026-03-31 · 11 obs

○ 2026-03-28 20:01:00
● 2026-03-29 00:11:18
● 2026-03-30 00:11:50
○ 2026-03-30 02:16:14
○ 2026-03-30 09:35:10
● 2026-03-30 11:16:48
● 2026-03-31 02:46:00
○ 2026-03-31 06:40:48
○ 2026-03-31 11:11:26
● 2026-03-31 12:24:58
● 2026-03-31 12:25:00

●A3.164.6.532026-03-29 → 2026-03-31 · 11 obs

●A3.164.6.632026-03-29 → 2026-03-31 · 11 obs

●A3.164.6.662026-03-29 → 2026-03-31 · 11 obs

○A3.164.68.1082026-03-24 → 2026-03-27 · 17 obs

○ 2026-03-23 04:02:48
● 2026-03-24 07:02:04
● 2026-03-24 13:18:46
○ 2026-03-24 16:32:02
○ 2026-03-25 13:15:24
● 2026-03-25 23:17:56
● 2026-03-26 00:12:00
○ 2026-03-26 01:27:42
○ 2026-03-26 11:50:28
● 2026-03-26 20:42:34
● 2026-03-27 00:42:26
○ 2026-03-27 01:51:10
○ 2026-03-27 04:54:22
● 2026-03-27 11:50:20
● 2026-03-27 15:45:30
○ 2026-03-27 16:39:50
○ 2026-03-31 12:25:00

○A3.164.68.282026-03-24 → 2026-03-27 · 17 obs

○A3.164.68.62026-03-24 → 2026-03-27 · 17 obs

○A3.164.68.822026-03-24 → 2026-03-27 · 17 obs

○A3.167.56.112026-03-07 → 2026-03-28 · 23 obs

○ 2026-03-07 02:14:28
● 2026-03-07 03:37:42
○ 2026-03-07 21:27:46
○ 2026-03-16 01:38:46
● 2026-03-16 03:15:52
○ 2026-03-16 04:33:52
○ 2026-03-18 15:47:20
● 2026-03-18 22:01:18
○ 2026-03-19 01:35:02
● 2026-03-20 00:14:08
○ 2026-03-20 03:13:28
○ 2026-03-22 01:03:14
● 2026-03-23 00:13:38
○ 2026-03-23 04:02:48
○ 2026-03-26 00:12:00
● 2026-03-26 01:27:42
○ 2026-03-26 04:38:00
○ 2026-03-27 16:39:50
● 2026-03-28 00:12:56
○ 2026-03-28 02:26:58
● 2026-03-28 07:01:26
○ 2026-03-28 13:22:28
○ 2026-03-31 12:25:00

○A3.167.56.212026-03-07 → 2026-03-28 · 23 obs

○A3.167.56.242026-03-07 → 2026-03-28 · 23 obs

○A3.167.56.952026-03-07 → 2026-03-28 · 23 obs

○A3.174.113.1282026-03-24 → 2026-03-27 · 14 obs

○ 2026-03-24 19:14:20
● 2026-03-24 20:40:30
○ 2026-03-25 01:23:10
● 2026-03-25 03:28:28
● 2026-03-25 13:15:24
○ 2026-03-25 23:17:56
○ 2026-03-26 07:28:58
● 2026-03-26 11:50:28
○ 2026-03-26 20:42:34
○ 2026-03-27 01:51:10
● 2026-03-27 02:24:34
● 2026-03-27 04:54:22
○ 2026-03-27 11:50:20
○ 2026-03-31 12:25:00

○A3.174.113.472026-03-24 → 2026-03-27 · 14 obs

○A3.174.113.612026-03-24 → 2026-03-27 · 14 obs

○A3.174.113.812026-03-24 → 2026-03-27 · 14 obs

○A52.84.20.1132026-03-08 → 2026-03-21 · 30 obs

○ 2026-03-08 11:09:04
● 2026-03-08 18:12:08
○ 2026-03-09 02:56:26
○ 2026-03-09 07:23:36
● 2026-03-09 11:04:40
● 2026-03-09 12:55:22
○ 2026-03-10 02:51:24
● 2026-03-10 10:43:56
○ 2026-03-10 13:07:54
○ 2026-03-15 02:42:08
● 2026-03-15 17:54:30
○ 2026-03-15 21:29:12
○ 2026-03-16 05:08:26
● 2026-03-16 14:33:38
● 2026-03-17 04:40:16
○ 2026-03-17 08:56:02
● 2026-03-17 11:27:56
○ 2026-03-17 21:34:18
● 2026-03-17 22:55:54
○ 2026-03-18 02:06:50
● 2026-03-18 14:46:32
● 2026-03-18 15:47:20
○ 2026-03-18 22:01:18
○ 2026-03-20 03:13:28
● 2026-03-20 08:00:24
○ 2026-03-20 10:36:28
○ 2026-03-20 23:27:12
● 2026-03-21 01:35:26
○ 2026-03-22 01:03:14
○ 2026-03-31 12:25:00

○A52.84.20.722026-03-08 → 2026-03-21 · 30 obs

○A52.84.20.832026-03-08 → 2026-03-21 · 30 obs

○A52.84.20.872026-03-08 → 2026-03-21 · 30 obs

○A52.85.31.1002026-03-08 → 2026-03-08 · 4 obs

○ 2026-03-07 21:27:46
● 2026-03-08 08:06:06
○ 2026-03-08 11:09:04
○ 2026-03-31 12:25:00

○A52.85.31.1012026-03-08 → 2026-03-08 · 4 obs

○ 2026-03-07 21:27:46
● 2026-03-08 08:06:06
○ 2026-03-08 11:09:04
○ 2026-03-31 12:25:00

○A52.85.31.742026-03-08 → 2026-03-08 · 4 obs

○ 2026-03-07 21:27:46
● 2026-03-08 08:06:06
○ 2026-03-08 11:09:04
○ 2026-03-31 12:25:00

○A52.85.31.822026-03-08 → 2026-03-08 · 4 obs

○ 2026-03-07 21:27:46
● 2026-03-08 08:06:06
○ 2026-03-08 11:09:04
○ 2026-03-31 12:25:00

○A54.230.253.1012026-03-30 → 2026-03-31 · 10 obs

○ 2026-03-30 02:16:14
● 2026-03-30 03:16:52
○ 2026-03-30 04:29:54
● 2026-03-30 05:16:58
○ 2026-03-30 05:46:58
○ 2026-03-31 02:46:00
● 2026-03-31 06:40:48
● 2026-03-31 09:13:02
○ 2026-03-31 10:27:58
○ 2026-03-31 12:25:00

○A54.230.253.1172026-03-30 → 2026-03-31 · 10 obs

○A54.230.253.1182026-03-30 → 2026-03-31 · 10 obs

○A54.230.253.652026-03-30 → 2026-03-31 · 10 obs

○A72.52.4.912015-06-18 → 2015-11-04 · 4 obs

● 2015-06-18 07:32:10
● 2015-11-04 18:09:36
○ 2016-01-22 23:52:10
○ 2026-03-31 12:25:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
courselor.com	ns-142.awsdns-17.com, ns-710.awsdns-24.net, ns-1052.awsdns-03.org, ns-1859.awsdns-40.co.uk	1 record

✅ Authoritative Response

Server:205.251.196.28

NS records: ns-142.awsdns-17.com, ns-710.awsdns-24.net, ns-1052.awsdns-03.org, ns-1859.awsdns-40.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for courselor.com (unsigned zone)

⏱️ Timing

Total: 415ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`3.164.6.53, 3.164.6.66...`
NS	4	`ns-1052.awsdns-03.org, ns-142.awsdns-17.com...`
SOA	1	`ns-1052.awsdns-03.org awsdns-hostmaster.`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-142.awsdns-17.com)

Analysis

IP Addresses

courselor.com points to four IP numbers: 3.164.6.53, 3.164.6.63, 3.164.6.66 and 3.164.6.120.

Other host names including www.sendfriend.io, p5s.jp, 500cc.vip, m.singleplatform.com and ihubiitpatnaonline.com share IP numbers with courselor.com.

Name Servers

courselor.com is delegated to four name servers: ns-142.awsdns-17.com, ns-710.awsdns-24.net, ns-1052.awsdns-03.org and ns-1859.awsdns-40.co.uk.

courselor.com at least partially shares name servers with other domains, including haptikapi.com, easyfundraising.co, dwsv94cdexm69.cloudfront.net, d2uph33pm9zbn3.cloudfront.net and cses.ca.

Hosts with two IP numbers:

Host ns-142.awsdns-17.com points to 2600:9000:5300:8e00::1 and 205.251.192.142

Host ns-710.awsdns-24.net points to 2600:9000:5302:c600::1 and 205.251.194.198

Host ns-1052.awsdns-03.org points to 2600:9000:5304:1c00::1 and 205.251.196.28

Host ns-1859.awsdns-40.co.uk points to 2600:9000:5307:4300::1 and 205.251.199.67

courselor.com - robtex.com

courselor.com

com

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

`courselor.com`

`com`