crowdcourse.com - dns.ninja

`crowdcourse.com`

DNSSEC	⚠️ Not signed
A	3.166.192.3^{🇺🇸 Amazon3.166.192.0/21}
		PTR	`server-3-166-192-3.phl51.r.cloudfront.net`
A	3.166.192.14^{🇺🇸 Amazon3.166.192.0/21}
A	3.166.192.96^{🇺🇸 Amazon3.166.192.0/21}
A	3.166.192.125^{🇺🇸 Amazon3.166.192.0/21}
NS	`ns-670.awsdns-19.net` ⭐
		A	2600:9000:5302:9e00::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-670.awsdns-19.net`
		A	205.251.194.158^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-670.awsdns-19.net`
NS	`ns-1429.awsdns-50.org`
		A	2600:9000:5305:9500::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1429.awsdns-50.org`
		A	205.251.197.149^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1429.awsdns-50.org`
NS	`ns-1812.awsdns-34.co.uk`
		A	2600:9000:5307:1400::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1812.awsdns-34.co.uk`
		A	205.251.199.20^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1812.awsdns-34.co.uk`
NS	`ns-266.awsdns-33.com`
		A	2600:9000:5301:a00::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-266.awsdns-33.com`
		A	205.251.193.10^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-266.awsdns-33.com`
SOA	`ns-670.awsdns-19.net`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=1784407277

Same first word

crowdcourse.com

Similar names

DNS History

107 records (8 active, 99 former)

○NSdns1.registrar-servers.com2015-08-02 → 2017-02-13 · 4 obs

● 2015-08-02 05:32:36
● 2017-02-13 21:26:54
○ 2026-02-15 17:28:02
○ 2026-07-18 21:06:28

○NSdns2.registrar-servers.com2015-08-02 → 2017-02-13 · 4 obs

● 2015-08-02 05:32:36
● 2017-02-13 21:26:54
○ 2026-02-15 17:28:02
○ 2026-07-18 21:06:28

○NSdns3.registrar-servers.com2015-08-02 → 2017-02-13 · 4 obs

● 2015-08-02 05:32:36
● 2017-02-13 21:26:54
○ 2026-02-15 17:28:02
○ 2026-07-18 21:06:28

○NSdns4.registrar-servers.com2015-08-02 → 2017-02-13 · 4 obs

● 2015-08-02 05:32:36
● 2017-02-13 21:26:54
○ 2026-02-15 17:28:02
○ 2026-07-18 21:06:28

○NSdns5.registrar-servers.com2015-08-02 → 2017-02-13 · 4 obs

● 2015-08-02 05:32:36
● 2017-02-13 21:26:54
○ 2026-02-15 17:28:02
○ 2026-07-18 21:06:28

●NSns-1429.awsdns-50.org2026-02-15 → 2026-07-18 · 3 obs

○ 2017-02-13 21:26:54
● 2026-02-15 17:28:02
● 2026-07-18 21:06:28

●NSns-1812.awsdns-34.co.uk2026-02-15 → 2026-07-18 · 3 obs

○ 2017-02-13 21:26:54
● 2026-02-15 17:28:02
● 2026-07-18 21:06:28

●NSns-266.awsdns-33.com2026-02-15 → 2026-07-18 · 3 obs

○ 2017-02-13 21:26:54
● 2026-02-15 17:28:02
● 2026-07-18 21:06:28

●NSns-670.awsdns-19.net2026-02-15 → 2026-07-18 · 3 obs

○ 2017-02-13 21:26:54
● 2026-02-15 17:28:02
● 2026-07-18 21:06:28

○MXalt1.aspmx.l.google.com2015-08-02 → 2026-02-17 · 4 obs

● 2015-08-02 05:32:36
● 2026-02-17 06:54:00
○ 2026-02-17 11:06:16
○ 2026-07-18 21:06:28

○MXalt2.aspmx.l.google.com2015-08-02 → 2026-02-17 · 4 obs

● 2015-08-02 05:32:36
● 2026-02-17 06:54:00
○ 2026-02-17 11:06:16
○ 2026-07-18 21:06:28

○MXaspmx.l.google.com2015-08-02 → 2026-02-17 · 4 obs

● 2015-08-02 05:32:36
● 2026-02-17 06:54:00
○ 2026-02-17 11:06:16
○ 2026-07-18 21:06:28

○MXaspmx2.googlemail.com2015-08-02 → 2026-02-17 · 4 obs

● 2015-08-02 05:32:36
● 2026-02-17 06:54:00
○ 2026-02-17 11:06:16
○ 2026-07-18 21:06:28

○MXaspmx3.googlemail.com2015-08-02 → 2026-02-17 · 4 obs

● 2015-08-02 05:32:36
● 2026-02-17 06:54:00
○ 2026-02-17 11:06:16
○ 2026-07-18 21:06:28

○A108.156.85.1232026-04-28 → 2026-07-01 · 16 obs

○ 2026-04-27 16:29:40
● 2026-04-28 21:02:18
○ 2026-04-28 21:37:58
○ 2026-04-29 00:46:46
● 2026-04-29 02:45:56
○ 2026-04-29 04:16:24
○ 2026-04-29 22:54:52
● 2026-04-30 01:12:46
○ 2026-04-30 02:20:26
○ 2026-05-17 22:36:12
● 2026-05-18 00:18:14
● 2026-05-18 01:06:22
○ 2026-05-18 02:29:20
● 2026-07-01 03:08:20
○ 2026-07-01 06:19:10
○ 2026-07-18 21:06:28

○A108.156.85.1262026-04-28 → 2026-07-01 · 16 obs

○A108.156.85.342026-04-28 → 2026-07-01 · 16 obs

○A108.156.85.902026-04-28 → 2026-07-01 · 16 obs

○A13.225.47.112026-05-19 → 2026-07-02 · 18 obs

○ 2026-05-18 02:29:20
● 2026-05-19 08:56:08
● 2026-05-19 09:47:12
○ 2026-05-19 13:44:16
○ 2026-06-03 04:46:48
● 2026-06-03 19:04:42
○ 2026-06-04 07:40:26
● 2026-06-04 19:46:00
○ 2026-06-05 18:22:28
○ 2026-06-08 02:55:28
● 2026-06-30 04:09:10
○ 2026-07-01 03:08:20
● 2026-07-02 00:04:48
● 2026-07-02 06:09:28
○ 2026-07-02 17:43:06
● 2026-07-02 21:49:46
○ 2026-07-03 01:21:44
○ 2026-07-18 21:06:28

○A13.225.47.292026-05-19 → 2026-07-02 · 18 obs

○A13.225.47.502026-05-19 → 2026-07-02 · 18 obs

○A13.225.47.912026-05-19 → 2026-07-02 · 18 obs

○A13.32.241.1122026-05-11 → 2026-05-11 · 5 obs

○ 2026-05-10 16:45:34
● 2026-05-11 10:53:12
● 2026-05-11 11:40:20
○ 2026-05-11 13:32:52
○ 2026-07-18 21:06:28

○A13.32.241.742026-05-11 → 2026-05-11 · 5 obs

○ 2026-05-10 16:45:34
● 2026-05-11 10:53:12
● 2026-05-11 11:40:20
○ 2026-05-11 13:32:52
○ 2026-07-18 21:06:28

○A13.32.241.752026-05-11 → 2026-05-11 · 5 obs

○ 2026-05-10 16:45:34
● 2026-05-11 10:53:12
● 2026-05-11 11:40:20
○ 2026-05-11 13:32:52
○ 2026-07-18 21:06:28

○A13.32.241.772026-05-11 → 2026-05-11 · 5 obs

○ 2026-05-10 16:45:34
● 2026-05-11 10:53:12
● 2026-05-11 11:40:20
○ 2026-05-11 13:32:52
○ 2026-07-18 21:06:28

○A13.33.235.22026-03-23 → 2026-07-18 · 37 obs

○ 2026-03-23 03:31:00
● 2026-03-23 04:35:32
○ 2026-03-23 05:43:58
○ 2026-03-24 02:32:12
● 2026-03-24 04:44:48
● 2026-03-24 06:39:34
○ 2026-03-24 12:45:10
○ 2026-03-26 07:17:34
● 2026-03-26 16:50:24
● 2026-03-26 22:01:44
○ 2026-03-27 01:20:48
○ 2026-06-03 01:07:34
● 2026-07-11 09:34:34
○ 2026-07-11 15:59:02
● 2026-07-11 20:15:42
○ 2026-07-11 22:19:40
● 2026-07-13 11:05:02
○ 2026-07-13 13:04:32
● 2026-07-14 01:30:34
○ 2026-07-14 02:47:42
● 2026-07-14 03:20:08
○ 2026-07-14 12:29:52
● 2026-07-14 13:14:40
○ 2026-07-14 13:49:52
● 2026-07-14 14:48:00
○ 2026-07-15 19:50:12
● 2026-07-15 21:18:12
○ 2026-07-16 01:37:32
● 2026-07-16 07:52:20
○ 2026-07-16 12:26:42
● 2026-07-16 16:40:06
○ 2026-07-17 03:30:20
● 2026-07-18 06:07:46
○ 2026-07-18 07:09:36
● 2026-07-18 13:54:20
○ 2026-07-18 19:43:24
○ 2026-07-18 21:06:28

○A13.33.235.662026-03-23 → 2026-07-18 · 37 obs

○A13.33.235.752026-03-23 → 2026-07-18 · 37 obs

○A13.33.235.852026-03-23 → 2026-07-18 · 37 obs

○A13.33.4.1072026-03-30 → 2026-07-02 · 18 obs

○ 2026-03-30 06:17:18
● 2026-03-30 07:23:16
○ 2026-03-30 07:57:30
○ 2026-03-30 15:15:36
● 2026-03-30 18:34:00
○ 2026-04-02 03:43:22
○ 2026-05-03 13:05:22
● 2026-05-06 08:07:12
○ 2026-05-07 07:46:22
○ 2026-06-21 08:51:34
● 2026-06-22 15:04:30
● 2026-06-27 19:31:42
○ 2026-06-30 04:09:10
● 2026-07-02 03:39:32
○ 2026-07-02 04:22:48
● 2026-07-02 05:25:26
○ 2026-07-02 06:09:28
○ 2026-07-18 21:06:28

○A13.33.4.1232026-03-30 → 2026-07-02 · 18 obs

○A13.33.4.262026-03-30 → 2026-07-02 · 18 obs

○A13.33.4.292026-03-30 → 2026-07-02 · 18 obs

○A18.161.21.1032026-04-16 → 2026-05-26 · 17 obs

○ 2026-04-15 02:57:44
● 2026-04-16 02:05:10
○ 2026-04-16 05:18:34
○ 2026-04-21 00:02:56
● 2026-04-21 03:12:54
○ 2026-04-21 06:45:22
○ 2026-05-02 06:25:22
● 2026-05-02 11:17:24
○ 2026-05-02 14:27:34
○ 2026-05-25 07:26:42
● 2026-05-25 11:53:40
○ 2026-05-25 15:45:48
○ 2026-05-26 14:09:46
● 2026-05-26 15:52:46
● 2026-05-26 16:31:36
○ 2026-05-26 20:33:38
○ 2026-07-18 21:06:28

○A18.161.21.362026-04-16 → 2026-05-26 · 17 obs

○A18.161.21.372026-04-16 → 2026-05-26 · 17 obs

○A18.161.21.412026-04-16 → 2026-05-26 · 17 obs

○A18.239.36.1182026-04-05 → 2026-04-05 · 4 obs

○ 2026-04-02 12:41:46
● 2026-04-05 16:17:34
○ 2026-04-05 16:56:04
○ 2026-07-18 21:06:28

○A18.239.36.192026-04-05 → 2026-04-05 · 4 obs

○ 2026-04-02 12:41:46
● 2026-04-05 16:17:34
○ 2026-04-05 16:56:04
○ 2026-07-18 21:06:28

○A18.239.36.492026-04-05 → 2026-04-05 · 4 obs

○ 2026-04-02 12:41:46
● 2026-04-05 16:17:34
○ 2026-04-05 16:56:04
○ 2026-07-18 21:06:28

○A18.239.36.942026-04-05 → 2026-04-05 · 4 obs

○ 2026-04-02 12:41:46
● 2026-04-05 16:17:34
○ 2026-04-05 16:56:04
○ 2026-07-18 21:06:28

○A18.239.6.322026-04-12 → 2026-05-08 · 14 obs

○ 2026-04-09 01:04:42
● 2026-04-12 12:48:22
○ 2026-04-12 19:05:14
○ 2026-05-07 07:46:22
● 2026-05-07 15:19:22
● 2026-05-07 18:25:14
○ 2026-05-07 21:10:12
● 2026-05-07 22:12:12
○ 2026-05-08 00:04:08
○ 2026-05-08 09:17:42
● 2026-05-08 10:08:58
● 2026-05-08 10:40:10
○ 2026-05-08 11:10:10
○ 2026-07-18 21:06:28

○A18.239.6.612026-04-12 → 2026-05-08 · 14 obs

○A18.239.6.822026-04-12 → 2026-05-08 · 14 obs

○A18.239.6.982026-04-12 → 2026-05-08 · 14 obs

○A18.244.18.1232026-05-28 → 2026-05-28 · 4 obs

○ 2026-05-28 09:06:24
● 2026-05-28 17:36:50
○ 2026-05-28 18:33:28
○ 2026-07-18 21:06:28

○A18.244.18.1242026-05-28 → 2026-05-28 · 4 obs

○ 2026-05-28 09:06:24
● 2026-05-28 17:36:50
○ 2026-05-28 18:33:28
○ 2026-07-18 21:06:28

○A18.244.18.212026-05-28 → 2026-05-28 · 4 obs

○ 2026-05-28 09:06:24
● 2026-05-28 17:36:50
○ 2026-05-28 18:33:28
○ 2026-07-18 21:06:28

○A18.244.18.462026-05-28 → 2026-05-28 · 4 obs

○ 2026-05-28 09:06:24
● 2026-05-28 17:36:50
○ 2026-05-28 18:33:28
○ 2026-07-18 21:06:28

○A216.137.39.1092026-07-03 → 2026-07-17 · 23 obs

○ 2026-07-02 21:49:46
● 2026-07-03 01:21:44
○ 2026-07-03 06:20:50
● 2026-07-03 08:05:22
○ 2026-07-03 10:28:32
● 2026-07-03 18:10:40
● 2026-07-04 07:39:48
○ 2026-07-07 14:53:00
● 2026-07-07 20:36:30
○ 2026-07-08 15:53:34
○ 2026-07-09 08:07:52
● 2026-07-09 16:08:10
● 2026-07-11 01:16:54
○ 2026-07-11 03:31:58
● 2026-07-11 04:46:52
○ 2026-07-11 07:12:22
● 2026-07-17 03:30:20
○ 2026-07-17 05:00:04
● 2026-07-17 11:14:04
○ 2026-07-17 12:01:02
● 2026-07-17 23:09:24
○ 2026-07-17 23:42:42
○ 2026-07-18 21:06:28

○A216.137.39.132026-07-03 → 2026-07-17 · 23 obs

○A216.137.39.312026-07-03 → 2026-07-17 · 23 obs

○A216.137.39.782026-07-03 → 2026-07-17 · 23 obs

○A216.137.52.1102026-05-27 → 2026-06-06 · 17 obs

○ 2026-05-26 20:33:38
● 2026-05-27 00:07:34
● 2026-05-27 01:18:58
○ 2026-05-27 01:58:00
○ 2026-06-01 11:49:26
● 2026-06-01 20:34:44
○ 2026-06-02 03:31:06
● 2026-06-02 08:02:36
● 2026-06-02 18:57:14
○ 2026-06-02 23:30:54
● 2026-06-03 04:46:48
○ 2026-06-03 19:04:42
○ 2026-06-06 09:21:48
● 2026-06-06 09:54:14
● 2026-06-06 11:52:22
○ 2026-06-06 13:03:12
○ 2026-07-18 21:06:28

○A216.137.52.172026-05-27 → 2026-06-06 · 17 obs

○A216.137.52.202026-05-27 → 2026-06-06 · 17 obs

○A216.137.52.352026-05-27 → 2026-06-06 · 17 obs

●A3.166.192.1252026-04-14 → 2026-07-18 · 48 obs

○ 2026-04-14 16:57:12
● 2026-04-14 23:22:06
● 2026-04-15 00:13:48
○ 2026-04-15 02:57:44
○ 2026-05-03 11:24:26
● 2026-05-03 13:05:22
○ 2026-05-03 15:50:52
○ 2026-05-08 10:40:10
● 2026-05-08 12:48:44
○ 2026-05-08 15:20:40
○ 2026-05-08 19:47:54
● 2026-05-08 21:09:56
● 2026-05-09 00:07:12
○ 2026-05-09 02:03:16
● 2026-07-12 17:55:08
○ 2026-07-12 20:38:04
● 2026-07-12 21:12:06
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● 2026-07-12 23:31:24
○ 2026-07-13 03:15:42
● 2026-07-13 08:18:38
○ 2026-07-13 11:05:02
● 2026-07-13 13:04:32
○ 2026-07-13 17:56:26
● 2026-07-13 21:00:32
○ 2026-07-13 22:25:02
● 2026-07-14 00:12:58
○ 2026-07-14 01:30:34
● 2026-07-14 02:47:42
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● 2026-07-14 12:29:52
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● 2026-07-16 03:10:06
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● 2026-07-16 14:50:46
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● 2026-07-17 07:19:18
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● 2026-07-17 12:58:50
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● 2026-07-17 22:21:16
○ 2026-07-17 23:09:24
● 2026-07-18 00:40:28
○ 2026-07-18 06:07:46
● 2026-07-18 09:56:22
○ 2026-07-18 13:54:20
● 2026-07-18 21:06:24
● 2026-07-18 21:06:28

●A3.166.192.142026-04-14 → 2026-07-18 · 48 obs

●A3.166.192.32026-04-14 → 2026-07-18 · 48 obs

●A3.166.192.962026-04-14 → 2026-07-18 · 48 obs

○A3.170.19.142026-02-17 → 2026-07-11 · 17 obs

○ 2026-02-15 17:28:02
○ 2026-02-16 02:20:32
● 2026-02-17 00:45:02
○ 2026-02-17 02:44:36
○ 2026-06-19 07:29:46
● 2026-06-20 20:35:48
○ 2026-06-23 18:17:04
● 2026-06-26 06:41:46
○ 2026-06-27 19:31:42
● 2026-06-30 08:19:32
○ 2026-07-03 15:05:58
● 2026-07-07 19:29:34
● 2026-07-11 15:59:02
○ 2026-07-11 20:15:42
● 2026-07-11 23:37:38
○ 2026-07-12 15:59:50
○ 2026-07-18 21:06:28

○A3.170.19.232026-02-17 → 2026-07-11 · 17 obs

○A3.170.19.522026-02-17 → 2026-07-11 · 17 obs

○A3.170.19.712026-02-17 → 2026-07-11 · 17 obs

○A3.173.182.1162026-03-16 → 2026-06-06 · 11 obs

○ 2026-03-08 22:31:26
● 2026-03-16 06:36:26
○ 2026-03-16 12:36:48
○ 2026-05-28 18:33:28
● 2026-05-28 21:48:14
○ 2026-05-29 00:02:14
○ 2026-06-06 11:52:22
● 2026-06-06 13:03:12
● 2026-06-06 14:26:18
○ 2026-06-06 15:22:30
○ 2026-07-18 21:06:28

○A3.173.182.192026-03-16 → 2026-06-06 · 11 obs

○A3.173.182.542026-03-16 → 2026-06-06 · 11 obs

○A3.173.182.912026-03-16 → 2026-06-06 · 11 obs

○A3.174.141.1142026-02-15 → 2026-02-16 · 6 obs

○ 2017-02-13 21:26:54
● 2026-02-15 17:28:02
○ 2026-02-16 00:17:22
● 2026-02-16 02:20:32
○ 2026-02-17 00:45:02
○ 2026-07-18 21:06:28

○A3.174.141.1202026-02-15 → 2026-02-16 · 6 obs

○ 2017-02-13 21:26:54
● 2026-02-15 17:28:02
○ 2026-02-16 00:17:22
● 2026-02-16 02:20:32
○ 2026-02-17 00:45:02
○ 2026-07-18 21:06:28

○A3.174.141.522026-02-15 → 2026-02-16 · 6 obs

○ 2017-02-13 21:26:54
● 2026-02-15 17:28:02
○ 2026-02-16 00:17:22
● 2026-02-16 02:20:32
○ 2026-02-17 00:45:02
○ 2026-07-18 21:06:28

○A3.174.141.762026-02-15 → 2026-02-16 · 6 obs

○ 2017-02-13 21:26:54
● 2026-02-15 17:28:02
○ 2026-02-16 00:17:22
● 2026-02-16 02:20:32
○ 2026-02-17 00:45:02
○ 2026-07-18 21:06:28

○A3.174.180.172026-05-27 → 2026-05-28 · 8 obs

○ 2026-05-27 01:58:00
● 2026-05-27 19:23:42
● 2026-05-27 19:55:58
○ 2026-05-27 21:21:18
● 2026-05-27 22:44:40
● 2026-05-28 02:43:38
○ 2026-05-28 09:06:24
○ 2026-07-18 21:06:28

○A3.174.180.242026-05-27 → 2026-05-28 · 8 obs

○ 2026-05-27 01:58:00
● 2026-05-27 19:23:42
● 2026-05-27 19:55:58
○ 2026-05-27 21:21:18
● 2026-05-27 22:44:40
● 2026-05-28 02:43:38
○ 2026-05-28 09:06:24
○ 2026-07-18 21:06:28

○A3.174.180.922026-05-27 → 2026-05-28 · 8 obs

○ 2026-05-27 01:58:00
● 2026-05-27 19:23:42
● 2026-05-27 19:55:58
○ 2026-05-27 21:21:18
● 2026-05-27 22:44:40
● 2026-05-28 02:43:38
○ 2026-05-28 09:06:24
○ 2026-07-18 21:06:28

○A3.174.180.982026-05-27 → 2026-05-28 · 8 obs

○ 2026-05-27 01:58:00
● 2026-05-27 19:23:42
● 2026-05-27 19:55:58
○ 2026-05-27 21:21:18
● 2026-05-27 22:44:40
● 2026-05-28 02:43:38
○ 2026-05-28 09:06:24
○ 2026-07-18 21:06:28

○A50.116.50.1692015-08-02 → 2017-02-13 · 4 obs

● 2015-08-02 05:32:36
● 2017-02-13 21:26:54
○ 2026-02-15 17:28:02
○ 2026-07-18 21:06:28

○A52.84.118.1162026-02-17 → 2026-04-22 · 18 obs

○ 2026-02-17 02:44:36
● 2026-02-17 11:06:16
○ 2026-02-17 12:10:10
○ 2026-02-18 06:54:00
● 2026-02-19 00:10:32
○ 2026-02-20 11:23:06
○ 2026-02-25 13:59:02
● 2026-02-28 03:41:06
● 2026-03-30 10:26:24
○ 2026-03-30 18:34:00
○ 2026-04-09 01:04:42
● 2026-04-13 01:18:02
○ 2026-04-14 16:57:12
○ 2026-04-22 18:03:38
● 2026-04-22 21:33:48
● 2026-04-22 22:31:56
○ 2026-04-23 05:42:12
○ 2026-07-18 21:06:28

○A52.84.118.512026-02-17 → 2026-04-22 · 18 obs

○A52.84.118.822026-02-17 → 2026-04-22 · 18 obs

○A52.84.118.942026-02-17 → 2026-04-22 · 18 obs

○A52.84.20.1152026-02-16 → 2026-06-28 · 18 obs

○ 2026-02-15 17:28:02
● 2026-02-16 00:17:22
○ 2026-02-16 02:20:32
○ 2026-02-17 00:45:02
● 2026-02-17 02:44:36
○ 2026-02-18 06:54:00
○ 2026-02-22 18:32:24
● 2026-02-23 11:52:48
○ 2026-02-23 23:00:16
○ 2026-02-28 03:41:06
● 2026-03-01 01:53:46
○ 2026-03-01 20:22:54
○ 2026-05-24 06:04:58
● 2026-05-24 10:23:34
○ 2026-05-24 13:45:26
● 2026-06-28 05:56:22
○ 2026-06-28 07:42:42
○ 2026-07-18 21:06:28

○A52.84.20.1172026-02-16 → 2026-06-28 · 18 obs

○A52.84.20.192026-02-16 → 2026-06-28 · 18 obs

○A52.84.20.742026-02-16 → 2026-06-28 · 18 obs

○A52.85.31.1282026-03-08 → 2026-05-24 · 17 obs

○ 2026-03-01 20:22:54
● 2026-03-08 18:39:20
○ 2026-03-08 22:31:26
○ 2026-03-30 05:39:26
● 2026-03-30 06:17:18
○ 2026-03-30 07:23:16
○ 2026-05-19 09:47:12
● 2026-05-19 13:44:16
● 2026-05-19 23:48:40
○ 2026-05-20 00:56:32
○ 2026-05-20 08:54:26
● 2026-05-20 13:53:16
○ 2026-05-20 19:32:26
○ 2026-05-24 13:45:26
● 2026-05-24 14:39:44
○ 2026-05-24 15:34:30
○ 2026-07-18 21:06:28

○A52.85.31.42026-03-08 → 2026-05-24 · 17 obs

○A52.85.31.772026-03-08 → 2026-05-24 · 17 obs

○A52.85.31.82026-03-08 → 2026-05-24 · 17 obs

○A54.230.114.1202026-03-22 → 2026-03-22 · 4 obs

○ 2026-03-16 12:36:48
● 2026-03-22 01:09:34
○ 2026-03-23 03:31:00
○ 2026-07-18 21:06:28

○A54.230.114.452026-03-22 → 2026-03-22 · 4 obs

○ 2026-03-16 12:36:48
● 2026-03-22 01:09:34
○ 2026-03-23 03:31:00
○ 2026-07-18 21:06:28

○A54.230.114.852026-03-22 → 2026-03-22 · 4 obs

○ 2026-03-16 12:36:48
● 2026-03-22 01:09:34
○ 2026-03-23 03:31:00
○ 2026-07-18 21:06:28

○A54.230.114.972026-03-22 → 2026-03-22 · 4 obs

○ 2026-03-16 12:36:48
● 2026-03-22 01:09:34
○ 2026-03-23 03:31:00
○ 2026-07-18 21:06:28

○A99.84.237.1122026-04-01 → 2026-06-29 · 17 obs

○ 2026-03-31 13:04:16
● 2026-04-01 08:28:56
○ 2026-04-01 11:35:06
○ 2026-04-02 05:51:18
● 2026-04-02 07:14:04
○ 2026-04-02 12:41:46
○ 2026-04-06 05:09:12
● 2026-04-06 10:15:30
○ 2026-04-06 14:36:42
○ 2026-05-23 13:10:30
● 2026-06-27 07:38:08
○ 2026-06-27 12:22:12
● 2026-06-28 09:24:54
○ 2026-06-28 12:47:26
● 2026-06-29 07:55:04
○ 2026-06-29 15:13:12
○ 2026-07-18 21:06:28

○A99.84.237.1152026-04-01 → 2026-06-29 · 17 obs

○A99.84.237.872026-04-01 → 2026-06-29 · 17 obs

○A99.84.237.902026-04-01 → 2026-06-29 · 17 obs

○A99.84.252.122026-03-31 → 2026-07-18 · 45 obs

○ 2026-03-30 18:34:00
● 2026-03-31 11:10:30
● 2026-03-31 12:07:04
○ 2026-03-31 13:04:16
○ 2026-04-21 00:02:56
● 2026-04-21 12:51:14
○ 2026-04-27 16:29:40
○ 2026-06-06 18:24:30
● 2026-06-08 15:56:14
● 2026-06-21 12:17:58
○ 2026-06-21 18:14:00
● 2026-07-01 09:41:58
● 2026-07-12 15:59:50
○ 2026-07-12 17:55:08
● 2026-07-12 20:38:04
○ 2026-07-12 21:12:06
● 2026-07-12 22:07:30
○ 2026-07-12 23:31:24
● 2026-07-13 03:15:42
○ 2026-07-13 08:18:38
● 2026-07-13 17:56:26
○ 2026-07-13 21:00:32
● 2026-07-13 22:25:02
○ 2026-07-14 00:12:58
● 2026-07-14 13:49:52
○ 2026-07-14 14:48:00
● 2026-07-15 19:50:12
○ 2026-07-15 21:18:12
● 2026-07-16 01:37:32
○ 2026-07-16 03:10:06
● 2026-07-16 12:26:42
○ 2026-07-16 14:50:46
● 2026-07-17 05:00:04
○ 2026-07-17 07:19:18
● 2026-07-17 12:01:02
○ 2026-07-17 12:58:50
● 2026-07-17 17:16:02
○ 2026-07-17 22:21:16
● 2026-07-17 23:42:42
○ 2026-07-18 00:40:28
● 2026-07-18 07:09:36
○ 2026-07-18 09:56:22
● 2026-07-18 19:43:24
○ 2026-07-18 21:06:24
○ 2026-07-18 21:06:28

○A99.84.252.262026-03-31 → 2026-07-18 · 45 obs

○A99.84.252.752026-03-31 → 2026-07-18 · 45 obs

○A99.84.252.82026-03-31 → 2026-07-18 · 45 obs

○A99.86.12.272026-04-23 → 2026-06-30 · 16 obs

○ 2026-04-22 22:31:56
● 2026-04-23 05:42:12
○ 2026-04-23 18:25:08
● 2026-04-23 22:17:28
● 2026-04-25 04:32:34
○ 2026-04-25 13:36:20
○ 2026-05-10 16:45:34
● 2026-05-12 20:57:10
○ 2026-05-13 16:56:56
○ 2026-06-26 05:11:12
● 2026-06-27 02:00:08
● 2026-06-30 01:42:46
○ 2026-06-30 02:18:02
● 2026-06-30 14:54:10
○ 2026-06-30 17:42:38
○ 2026-07-18 21:06:28

○A99.86.12.322026-04-23 → 2026-06-30 · 16 obs

○A99.86.12.462026-04-23 → 2026-06-30 · 16 obs

○A99.86.12.612026-04-23 → 2026-06-30 · 16 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, h.gtld-servers.net, b.gtld-servers.net, j.gtld-servers.net...	-
crowdcourse.com	ns-670.awsdns-19.net, ns-266.awsdns-33.com, ns-1812.awsdns-34.co.uk, ns-1429.awsdns-50.org	2 records

✅ Authoritative Response

Server:205.251.194.158

NS records: ns-670.awsdns-19.net, ns-266.awsdns-33.com, ns-1812.awsdns-34.co.uk, ns-1429.awsdns-50.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for crowdcourse.com (unsigned zone)

⏱️ Timing

Total: 398ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`3.166.192.125, 3.166.192.96...`
NS	4	`ns-1429.awsdns-50.org, ns-1812.awsdns-34.co.uk...`
SOA	1	`ns-670.awsdns-19.net awsdns-hostmaster.a`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-266.awsdns-33.com, ns-266.awsdns-33.com)

Analysis

IP Addresses

crowdcourse.com directs to four IP numbers, which are 3.166.192.3, 3.166.192.14, 3.166.192.96 and 3.166.192.125.

Among the host names that share IP numbers with crowdcourse.com are d2wte68jh8z2vr.cloudfront.net, d1x35bin1pequs.cloudfront.net, d5i6g7shujsrz.cloudfront.net and two others.

Name Servers

The domain crowdcourse.com is delegated to these four name servers: ns-266.awsdns-33.com, ns-670.awsdns-19.net, ns-1429.awsdns-50.org and ns-1812.awsdns-34.co.uk.

There is at least partial name server overlap between crowdcourse.com and other domains — hatcher.com, dates.jetzt, gc1.com and two more among them.

All four hostnames — ns-266.awsdns-33.com, ns-670.awsdns-19.net, ns-1429.awsdns-50.org and ns-1812.awsdns-34.co.uk — resolve to two IP numbers apiece: ns-266.awsdns-33.com to 205.251.193.10 and 2600:9000:5301:a00::1; ns-670.awsdns-19.net to 205.251.194.158 and 2600:9000:5302:9e00::1; ns-1429.awsdns-50.org to 205.251.197.149 and 2600:9000:5305:9500::1; ns-1812.awsdns-34.co.uk to 205.251.199.20 and 2600:9000:5307:1400::1.