computingmasterclass.com - dns.ninja

`computingmasterclass.com`

DNSSEC	⚠️ Not signed
A	52.84.80.36^{🇺🇸 Amazon52.84.0.0/14}
		PTR	`server-52-84-80-36.gru1.r.cloudfront.net`
A	52.84.80.64^{🇺🇸 Amazon52.84.0.0/14}
A	52.84.80.100^{🇺🇸 Amazon52.84.0.0/14}
A	52.84.80.119^{🇺🇸 Amazon52.84.0.0/14}
NS	`ns-1277.awsdns-31.org` ⭐
		A	2600:9000:5304:fd00::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1277.awsdns-31.org`
		A	205.251.196.253^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1277.awsdns-31.org`
NS	`ns-1687.awsdns-18.co.uk`
		A	2600:9000:5306:9700::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1687.awsdns-18.co.uk`
		A	205.251.198.151^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1687.awsdns-18.co.uk`
NS	`ns-226.awsdns-28.com`
		A	2600:9000:5300:e200::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-226.awsdns-28.com`
		A	205.251.192.226^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-226.awsdns-28.com`
NS	`ns-739.awsdns-28.net`
		A	2600:9000:5302:e300::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-739.awsdns-28.net`
		A	205.251.194.227^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-739.awsdns-28.net`
MX	`inbound-smtp.us-east-1.amazonaws.com` ⭐
		A	3.211.210.226^{🇺🇸 Amazon3.208.0.0/12 EC2 IAD prefix}
			PTR	`ec2-3-211-210-226.compute-1.amazonaws.com`
		A	44.206.9.87^{🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix}
			PTR	`ec2-44-206-9-87.compute-1.amazonaws.com`
		A	44.210.166.32^{🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix}
			PTR	`ec2-44-210-166-32.compute-1.amazonaws.com`
		A	54.164.173.191^{🇺🇸 Amazon54.164.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-164-173-191.compute-1.amazonaws.com`
		A	54.197.5.236^{🇺🇸 Amazon54.196.0.0/15 EC2 IAD 54.196.0.0/15}
			PTR	`ec2-54-197-5-236.compute-1.amazonaws.com`
TXT	`google-site-verification=gGFpiz10avl2sEClT_vFP36EpsqMNhry8w6QNB7PVq8`
SOA	`ns-1277.awsdns-31.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=1786067189

Same first word

computingmasterclass.com

DNS History

85 records (9 active, 76 former)

●NSns-1277.awsdns-31.org2026-02-15 → 2026-08-07 · 4 obs

● 2026-02-15 10:29:12
○ 2026-07-10 10:57:36
● 2026-07-10 12:08:12
● 2026-08-07 01:54:48

●NSns-1687.awsdns-18.co.uk2026-02-15 → 2026-08-07 · 4 obs

● 2026-02-15 10:29:12
○ 2026-07-10 10:57:36
● 2026-07-10 12:08:12
● 2026-08-07 01:54:48

●NSns-226.awsdns-28.com2026-02-15 → 2026-08-07 · 4 obs

● 2026-02-15 10:29:12
○ 2026-07-10 10:57:36
● 2026-07-10 12:08:12
● 2026-08-07 01:54:48

●NSns-739.awsdns-28.net2026-02-15 → 2026-08-07 · 4 obs

● 2026-02-15 10:29:12
○ 2026-07-10 10:57:36
● 2026-07-10 12:08:12
● 2026-08-07 01:54:48

●MXinbound-smtp.us-east-1.amazonaws.com2026-02-15 → 2026-08-07 · 4 obs

● 2026-02-15 10:29:12
○ 2026-07-10 10:57:36
● 2026-07-10 12:08:12
● 2026-08-07 01:54:48

○A108.158.194.1182026-03-29 → 2026-05-25 · 22 obs

○ 2026-03-25 00:13:08
● 2026-03-29 09:07:06
● 2026-03-30 11:06:22
○ 2026-03-30 19:06:16
● 2026-03-30 22:42:02
○ 2026-04-01 01:14:30
○ 2026-04-12 11:47:12
● 2026-04-13 13:49:22
○ 2026-04-14 17:03:22
○ 2026-04-16 15:57:06
● 2026-04-18 06:32:08
○ 2026-04-19 23:09:50
○ 2026-04-30 13:12:20
● 2026-05-01 05:49:08
● 2026-05-05 11:15:10
○ 2026-05-05 22:18:20
○ 2026-05-25 10:38:48
● 2026-05-25 17:45:38
○ 2026-05-25 18:34:58
● 2026-05-25 19:08:32
○ 2026-05-26 03:36:42
○ 2026-08-07 01:54:48

○A108.158.194.372026-03-29 → 2026-05-25 · 22 obs

○A108.158.194.742026-03-29 → 2026-05-25 · 22 obs

○A108.158.194.752026-03-29 → 2026-05-25 · 22 obs

○A13.227.207.1122026-04-05 → 2026-06-10 · 22 obs

○ 2026-04-05 01:43:54
● 2026-04-05 08:36:00
○ 2026-04-05 19:01:16
○ 2026-04-23 22:59:36
● 2026-04-24 09:52:30
○ 2026-04-24 11:22:10
○ 2026-05-29 07:51:44
● 2026-05-30 04:04:02
○ 2026-05-30 23:34:18
● 2026-05-31 13:46:04
● 2026-06-01 12:54:54
○ 2026-06-01 18:52:06
○ 2026-06-06 20:44:46
● 2026-06-07 09:49:12
○ 2026-06-08 06:17:42
● 2026-06-08 21:36:34
○ 2026-06-10 01:37:26
○ 2026-06-10 16:15:08
● 2026-06-10 18:45:32
● 2026-06-10 21:12:42
○ 2026-06-10 23:08:24
○ 2026-08-07 01:54:48

○A13.227.207.1132026-04-05 → 2026-06-10 · 22 obs

○A13.227.207.1252026-04-05 → 2026-06-10 · 22 obs

○A13.227.207.242026-04-05 → 2026-06-10 · 22 obs

○A13.249.228.1122026-07-28 → 2026-07-28 · 4 obs

○ 2026-07-28 08:15:40
● 2026-07-28 16:45:24
○ 2026-07-28 18:21:12
○ 2026-08-07 01:54:48

○A13.249.228.182026-07-28 → 2026-07-28 · 4 obs

○ 2026-07-28 08:15:40
● 2026-07-28 16:45:24
○ 2026-07-28 18:21:12
○ 2026-08-07 01:54:48

○A13.249.228.522026-07-28 → 2026-07-28 · 4 obs

○ 2026-07-28 08:15:40
● 2026-07-28 16:45:24
○ 2026-07-28 18:21:12
○ 2026-08-07 01:54:48

○A13.249.228.832026-07-28 → 2026-07-28 · 4 obs

○ 2026-07-28 08:15:40
● 2026-07-28 16:45:24
○ 2026-07-28 18:21:12
○ 2026-08-07 01:54:48

○A13.249.96.432026-06-17 → 2026-07-27 · 8 obs

○ 2026-06-16 06:26:44
● 2026-06-17 00:24:02
○ 2026-06-17 09:55:26
● 2026-06-21 10:43:08
○ 2026-06-21 14:08:22
● 2026-07-27 11:46:26
○ 2026-07-28 06:56:50
○ 2026-08-07 01:54:48

○A13.249.96.732026-06-17 → 2026-07-27 · 8 obs

○ 2026-06-16 06:26:44
● 2026-06-17 00:24:02
○ 2026-06-17 09:55:26
● 2026-06-21 10:43:08
○ 2026-06-21 14:08:22
● 2026-07-27 11:46:26
○ 2026-07-28 06:56:50
○ 2026-08-07 01:54:48

○A13.249.96.762026-06-17 → 2026-07-27 · 8 obs

○ 2026-06-16 06:26:44
● 2026-06-17 00:24:02
○ 2026-06-17 09:55:26
● 2026-06-21 10:43:08
○ 2026-06-21 14:08:22
● 2026-07-27 11:46:26
○ 2026-07-28 06:56:50
○ 2026-08-07 01:54:48

○A13.249.96.892026-06-17 → 2026-07-27 · 8 obs

○ 2026-06-16 06:26:44
● 2026-06-17 00:24:02
○ 2026-06-17 09:55:26
● 2026-06-21 10:43:08
○ 2026-06-21 14:08:22
● 2026-07-27 11:46:26
○ 2026-07-28 06:56:50
○ 2026-08-07 01:54:48

○A13.33.153.432026-02-18 → 2026-06-28 · 27 obs

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

○A13.33.153.572026-02-18 → 2026-06-28 · 27 obs

○A13.33.153.812026-02-18 → 2026-06-28 · 27 obs

○A13.33.153.982026-02-18 → 2026-06-28 · 27 obs

○A13.33.82.112026-04-21 → 2026-05-08 · 22 obs

○ 2026-04-19 23:09:50
● 2026-04-21 19:21:28
○ 2026-04-22 07:06:42
○ 2026-04-22 12:49:06
● 2026-04-23 21:15:36
○ 2026-04-23 22:59:36
○ 2026-04-25 05:30:44
● 2026-04-25 16:45:56
○ 2026-04-25 17:19:52
○ 2026-04-26 15:52:34
● 2026-04-27 09:09:36
○ 2026-04-27 15:17:40
○ 2026-05-01 05:49:08
● 2026-05-02 09:19:20
○ 2026-05-02 10:42:46
○ 2026-05-03 16:46:48
● 2026-05-04 02:31:06
○ 2026-05-04 07:00:16
○ 2026-05-08 06:52:28
● 2026-05-08 21:00:18
○ 2026-05-08 22:32:14
○ 2026-08-07 01:54:48

○A13.33.82.1132026-04-21 → 2026-05-08 · 22 obs

○A13.33.82.552026-04-21 → 2026-05-08 · 22 obs

○A13.33.82.722026-04-21 → 2026-05-08 · 22 obs

○A13.35.107.1192026-07-13 → 2026-08-01 · 34 obs

○ 2026-07-13 00:58:40
● 2026-07-13 20:16:24
○ 2026-07-13 21:09:40
● 2026-07-14 17:13:26
○ 2026-07-15 08:24:14
● 2026-07-17 23:23:42
○ 2026-07-18 05:06:20
● 2026-07-18 17:16:08
○ 2026-07-18 20:11:28
● 2026-07-19 23:21:08
○ 2026-07-20 01:05:22
● 2026-07-20 11:21:16
○ 2026-07-20 12:31:48
● 2026-07-20 20:54:02
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● 2026-07-21 00:02:38
○ 2026-07-21 06:02:14
● 2026-07-22 09:33:20
○ 2026-07-22 16:06:48
● 2026-07-22 17:24:52
○ 2026-07-23 03:44:46
● 2026-07-23 07:12:20
○ 2026-07-23 19:43:46
● 2026-07-24 07:34:52
○ 2026-07-24 16:37:10
● 2026-07-24 18:00:46
○ 2026-07-26 08:14:28
● 2026-07-28 08:15:40
○ 2026-07-28 16:45:24
● 2026-07-30 04:18:00
○ 2026-07-30 18:01:50
● 2026-08-01 06:23:02
○ 2026-08-01 14:15:44
○ 2026-08-07 01:54:48

○A13.35.107.172026-07-13 → 2026-08-01 · 34 obs

○A13.35.107.722026-07-13 → 2026-08-01 · 34 obs

○A13.35.107.982026-07-13 → 2026-08-01 · 34 obs

○A18.160.78.1012026-03-30 → 2026-07-28 · 27 obs

○ 2026-03-30 11:06:22
● 2026-03-30 19:06:16
○ 2026-03-30 22:42:02
○ 2026-04-01 01:14:30
● 2026-04-01 19:22:00
○ 2026-04-02 02:10:22
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● 2026-04-05 01:43:54
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● 2026-04-05 19:54:16
○ 2026-04-06 16:34:16
○ 2026-04-07 17:09:10
● 2026-04-07 19:19:14
○ 2026-04-08 23:25:58
○ 2026-06-17 14:13:54
● 2026-06-18 19:33:44
○ 2026-06-18 20:36:00
● 2026-06-19 10:05:40
○ 2026-06-19 12:32:06
● 2026-06-26 11:36:12
○ 2026-06-26 16:00:10
● 2026-06-26 20:21:42
○ 2026-06-28 00:20:38
● 2026-07-28 18:21:12
○ 2026-07-30 04:18:00
○ 2026-08-07 01:54:48

○A18.160.78.302026-03-30 → 2026-07-28 · 27 obs

○A18.160.78.622026-03-30 → 2026-07-28 · 27 obs

○A18.160.78.92026-03-30 → 2026-07-28 · 27 obs

○A18.161.205.1252026-07-24 → 2026-07-24 · 4 obs

○ 2026-07-24 07:34:52
● 2026-07-24 16:37:10
○ 2026-07-24 18:00:46
○ 2026-08-07 01:54:48

○A18.161.205.382026-07-24 → 2026-07-24 · 4 obs

○ 2026-07-24 07:34:52
● 2026-07-24 16:37:10
○ 2026-07-24 18:00:46
○ 2026-08-07 01:54:48

○A18.161.205.542026-07-24 → 2026-07-24 · 4 obs

○ 2026-07-24 07:34:52
● 2026-07-24 16:37:10
○ 2026-07-24 18:00:46
○ 2026-08-07 01:54:48

○A18.161.205.82026-07-24 → 2026-07-24 · 4 obs

○ 2026-07-24 07:34:52
● 2026-07-24 16:37:10
○ 2026-07-24 18:00:46
○ 2026-08-07 01:54:48

○A18.165.140.1272026-03-24 → 2026-08-06 · 22 obs

○ 2026-03-19 23:08:52
● 2026-03-24 15:34:28
○ 2026-03-25 00:13:08
● 2026-07-11 16:39:58
○ 2026-07-11 19:19:50
● 2026-07-13 00:01:34
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● 2026-07-14 03:13:56
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● 2026-07-14 15:57:06
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● 2026-07-18 20:11:28
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● 2026-07-19 11:57:02
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● 2026-07-20 12:31:48
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● 2026-08-06 20:57:36
○ 2026-08-06 23:03:58
● 2026-08-06 23:53:56
○ 2026-08-07 01:12:36
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○A18.165.140.332026-03-24 → 2026-08-06 · 22 obs

○A18.165.140.492026-03-24 → 2026-08-06 · 22 obs

○A18.165.140.542026-03-24 → 2026-08-06 · 22 obs

○A18.239.168.1032026-05-10 → 2026-05-20 · 16 obs

○ 2026-05-10 13:58:04
● 2026-05-10 16:42:52
○ 2026-05-10 20:40:02
○ 2026-05-12 07:32:26
● 2026-05-12 08:37:56
● 2026-05-13 02:04:00
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● 2026-05-20 03:01:26
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○ 2026-08-07 01:54:48

○A18.239.168.202026-05-10 → 2026-05-20 · 16 obs

○A18.239.168.382026-05-10 → 2026-05-20 · 16 obs

○A18.239.168.72026-05-10 → 2026-05-20 · 16 obs

○A18.64.207.1122026-04-27 → 2026-07-26 · 35 obs

○ 2026-04-27 15:17:40
● 2026-04-27 22:58:32
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● 2026-07-14 07:18:02
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● 2026-07-26 08:14:28
○ 2026-07-27 11:46:26
○ 2026-08-07 01:54:48

○A18.64.207.22026-04-27 → 2026-07-26 · 35 obs

○A18.64.207.202026-04-27 → 2026-07-26 · 35 obs

○A18.64.207.952026-04-27 → 2026-07-26 · 35 obs

○A18.65.25.1122026-03-19 → 2026-08-03 · 48 obs

○ 2026-03-09 23:15:38
● 2026-03-19 02:27:14
○ 2026-03-19 11:33:42
● 2026-03-19 22:07:34
○ 2026-03-19 23:08:52
● 2026-07-04 07:24:32
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● 2026-08-03 19:34:34
○ 2026-08-03 20:10:06
○ 2026-08-07 01:54:48

○A18.65.25.232026-03-19 → 2026-08-03 · 48 obs

○A18.65.25.612026-03-19 → 2026-08-03 · 48 obs

○A18.65.25.772026-03-19 → 2026-08-03 · 48 obs

○A18.67.233.402026-05-30 → 2026-06-05 · 19 obs

○ 2026-05-30 04:04:02
● 2026-05-30 14:19:56
○ 2026-05-30 18:20:40
○ 2026-06-01 12:54:54
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○ 2026-06-06 01:49:42
○ 2026-08-07 01:54:48

○A18.67.233.52026-05-30 → 2026-06-05 · 19 obs

○A18.67.233.652026-05-30 → 2026-06-05 · 19 obs

○A18.67.233.832026-05-30 → 2026-06-05 · 19 obs

○A3.170.152.1202026-05-19 → 2026-07-02 · 23 obs

○ 2026-05-19 12:14:58
● 2026-05-19 19:07:54
● 2026-05-20 00:22:54
○ 2026-05-20 03:01:26
● 2026-05-20 04:20:14
● 2026-05-24 23:03:18
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○ 2026-07-02 09:02:44
○ 2026-08-07 01:54:48

○A3.170.152.402026-05-19 → 2026-07-02 · 23 obs

○A3.170.152.692026-05-19 → 2026-07-02 · 23 obs

○A3.170.152.752026-05-19 → 2026-07-02 · 23 obs

○A3.171.61.1182026-02-15 → 2026-08-03 · 49 obs

● 2026-02-15 10:29:12
● 2026-02-17 00:56:10
○ 2026-02-18 22:55:54
● 2026-02-21 14:21:36
● 2026-03-09 20:09:38
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● 2026-06-20 22:38:16
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● 2026-07-01 16:50:28
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● 2026-07-03 18:09:46
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● 2026-07-04 08:10:50
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● 2026-07-05 03:50:16
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● 2026-07-05 08:52:52
○ 2026-07-07 16:00:28
● 2026-07-07 22:42:00
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● 2026-07-09 06:09:34
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● 2026-07-10 04:54:14
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● 2026-07-12 05:51:20
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● 2026-08-03 03:10:20
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● 2026-08-03 11:36:06
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● 2026-08-03 13:08:26
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● 2026-08-03 16:38:26
○ 2026-08-03 19:34:34
○ 2026-08-07 01:54:48

○A3.171.61.322026-02-15 → 2026-08-03 · 49 obs

○A3.171.61.52026-02-15 → 2026-08-03 · 49 obs

○A3.171.61.602026-02-15 → 2026-08-03 · 49 obs

○A3.174.26.372026-05-18 → 2026-06-08 · 8 obs

○ 2026-05-18 09:23:24
● 2026-05-18 21:41:36
● 2026-05-18 22:16:14
○ 2026-05-19 03:07:12
○ 2026-06-08 00:03:02
● 2026-06-08 01:36:32
○ 2026-06-08 04:42:02
○ 2026-08-07 01:54:48

○A3.174.26.52026-05-18 → 2026-06-08 · 8 obs

○ 2026-05-18 09:23:24
● 2026-05-18 21:41:36
● 2026-05-18 22:16:14
○ 2026-05-19 03:07:12
○ 2026-06-08 00:03:02
● 2026-06-08 01:36:32
○ 2026-06-08 04:42:02
○ 2026-08-07 01:54:48

○A3.174.26.582026-05-18 → 2026-06-08 · 8 obs

○ 2026-05-18 09:23:24
● 2026-05-18 21:41:36
● 2026-05-18 22:16:14
○ 2026-05-19 03:07:12
○ 2026-06-08 00:03:02
● 2026-06-08 01:36:32
○ 2026-06-08 04:42:02
○ 2026-08-07 01:54:48

○A3.174.26.752026-05-18 → 2026-06-08 · 8 obs

○ 2026-05-18 09:23:24
● 2026-05-18 21:41:36
● 2026-05-18 22:16:14
○ 2026-05-19 03:07:12
○ 2026-06-08 00:03:02
● 2026-06-08 01:36:32
○ 2026-06-08 04:42:02
○ 2026-08-07 01:54:48

○A3.174.29.1232026-04-12 → 2026-04-14 · 7 obs

○ 2026-04-08 23:25:58
● 2026-04-12 10:10:06
○ 2026-04-12 11:47:12
○ 2026-04-13 13:49:22
● 2026-04-14 17:03:22
○ 2026-04-14 18:58:44
○ 2026-08-07 01:54:48

○A3.174.29.902026-04-12 → 2026-04-14 · 7 obs

○ 2026-04-08 23:25:58
● 2026-04-12 10:10:06
○ 2026-04-12 11:47:12
○ 2026-04-13 13:49:22
● 2026-04-14 17:03:22
○ 2026-04-14 18:58:44
○ 2026-08-07 01:54:48

○A3.174.29.912026-04-12 → 2026-04-14 · 7 obs

○ 2026-04-08 23:25:58
● 2026-04-12 10:10:06
○ 2026-04-12 11:47:12
○ 2026-04-13 13:49:22
● 2026-04-14 17:03:22
○ 2026-04-14 18:58:44
○ 2026-08-07 01:54:48

○A3.174.29.922026-04-12 → 2026-04-14 · 7 obs

○ 2026-04-08 23:25:58
● 2026-04-12 10:10:06
○ 2026-04-12 11:47:12
○ 2026-04-13 13:49:22
● 2026-04-14 17:03:22
○ 2026-04-14 18:58:44
○ 2026-08-07 01:54:48

●A52.84.80.1002026-06-10 → 2026-08-07 · 85 obs

○ 2026-06-10 21:12:42
● 2026-06-10 23:08:24
● 2026-06-11 05:56:24
○ 2026-06-11 10:08:06
○ 2026-06-11 16:37:04
● 2026-06-11 22:09:10
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● 2026-06-12 02:31:28
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● 2026-07-04 04:45:58
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● 2026-07-08 01:19:28
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● 2026-07-08 15:56:50
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● 2026-07-09 12:15:50
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● 2026-07-09 22:50:40
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● 2026-07-12 10:03:46
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● 2026-07-13 00:58:40
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● 2026-07-13 23:26:22
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● 2026-07-15 08:24:14
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● 2026-07-18 05:06:20
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● 2026-07-18 22:00:32
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● 2026-07-19 17:45:14
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● 2026-07-20 01:05:22
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● 2026-07-20 17:52:30
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● 2026-07-21 06:02:14
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● 2026-07-23 03:44:46
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● 2026-07-23 19:43:46
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● 2026-07-30 18:01:50
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● 2026-08-01 14:15:44
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● 2026-08-02 18:25:08
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● 2026-08-03 03:42:18
○ 2026-08-03 10:53:36
● 2026-08-03 20:10:06
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● 2026-08-06 23:03:58
○ 2026-08-06 23:53:56
● 2026-08-07 01:12:36
● 2026-08-07 01:54:48

●A52.84.80.1192026-06-10 → 2026-08-07 · 85 obs

●A52.84.80.362026-06-10 → 2026-08-07 · 85 obs

●A52.84.80.642026-06-10 → 2026-08-07 · 85 obs

○A65.8.76.1072026-05-28 → 2026-05-29 · 7 obs

○ 2026-05-26 11:21:10
● 2026-05-28 06:22:54
○ 2026-05-28 10:25:24
○ 2026-05-28 18:17:44
● 2026-05-29 04:06:32
○ 2026-05-29 07:51:44
○ 2026-08-07 01:54:48

○A65.8.76.482026-05-28 → 2026-05-29 · 7 obs

○ 2026-05-26 11:21:10
● 2026-05-28 06:22:54
○ 2026-05-28 10:25:24
○ 2026-05-28 18:17:44
● 2026-05-29 04:06:32
○ 2026-05-29 07:51:44
○ 2026-08-07 01:54:48

○A65.8.76.662026-05-28 → 2026-05-29 · 7 obs

○ 2026-05-26 11:21:10
● 2026-05-28 06:22:54
○ 2026-05-28 10:25:24
○ 2026-05-28 18:17:44
● 2026-05-29 04:06:32
○ 2026-05-29 07:51:44
○ 2026-08-07 01:54:48

○A65.8.76.832026-05-28 → 2026-05-29 · 7 obs

○ 2026-05-26 11:21:10
● 2026-05-28 06:22:54
○ 2026-05-28 10:25:24
○ 2026-05-28 18:17:44
● 2026-05-29 04:06:32
○ 2026-05-29 07:51:44
○ 2026-08-07 01:54:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
computingmasterclass.com	ns-226.awsdns-28.com, ns-739.awsdns-28.net, ns-1687.awsdns-18.co.uk, ns-1277.awsdns-31.org	2 records

✅ Authoritative Response

Server:205.251.192.226

NS records: ns-226.awsdns-28.com, ns-739.awsdns-28.net, ns-1687.awsdns-18.co.uk, ns-1277.awsdns-31.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for computingmasterclass.com (unsigned zone)

⏱️ Timing

Total: 1171ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`3.171.61.118, 3.171.61.5...`
NS	4	`ns-1277.awsdns-31.org, ns-1687.awsdns-18.co.uk...`
MX	1	`inbound-smtp.us-east-1.amazonaws.com (pr`
TXT	1	`google-site-verification=gGFpiz10avl2sEC`
SOA	1	`ns-1277.awsdns-31.org awsdns-hostmaster.`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-226.awsdns-28.com, ns-226.awsdns-28.com)

Analysis

IP Addresses

computingmasterclass.com resolves to four IP addresses: 52.84.80.36, 52.84.80.64, 52.84.80.100 and 52.84.80.119.

Two other host names, along with theuolo.com, workcellai.ois.amazon.dev and d3romizq93mop.cloudfront.net, also share IP numbers with computingmasterclass.com.

Name Servers

The NS records for computingmasterclass.com point to four name servers: ns-226.awsdns-28.com, ns-739.awsdns-28.net, ns-1277.awsdns-31.org and ns-1687.awsdns-18.co.uk.

computingmasterclass.com has at least partial name server overlap with other domains, such as bisno.com, travian.jp, benchmarkingframework.com and two others.

These name servers tend to appear together with the name servers ns-1132.awsdns-13.org, ns-50.awsdns-06.com and ns-584.awsdns-09.net.

ns-226.awsdns-28.com, ns-739.awsdns-28.net, ns-1277.awsdns-31.org and ns-1687.awsdns-18.co.uk all point to exactly two IP numbers each: ns-226.awsdns-28.com → 205.251.192.226 and 2600:9000:5300:e200::1; ns-739.awsdns-28.net → 205.251.194.227 and 2600:9000:5302:e300::1; ns-1277.awsdns-31.org → 205.251.196.253 and 2600:9000:5304:fd00::1; ns-1687.awsdns-18.co.uk → 205.251.198.151 and 2600:9000:5306:9700::1.

Mail Servers

The sole mail server for computingmasterclass.com is inbound-smtp.us-east-1.amazonaws.com.

Among the domains sharing a mail server setup with computingmasterclass.com are sacinternal.com, tax.a2z.com, pole-lc-spe.slack.com and two others.

There is at least a partial MX overlap between computingmasterclass.com and other domains, including misnet.atlassian.net, subwaytech.com, zpgltd.atlassian.net and two others.

These mail servers often co-occur with the mail servers inbound-smtp.us-west-2.amazonaws.com.

inbound-smtp.us-east-1.amazonaws.com resolves to five IP numbers: 3.211.210.226, 44.206.9.87, 44.210.166.32 and two others.