`cfutletter.com`

DNSSEC	⚠️ Not signed
A	3.171.76.53^{🇺🇸 Amazon3.171.76.0/23}
		PTR	`server-3-171-76-53.iad89.r.cloudfront.net`
A	3.171.76.60^{🇺🇸 Amazon3.171.76.0/23}
A	3.171.76.72^{🇺🇸 Amazon3.171.76.0/23}
A	3.171.76.100^{🇺🇸 Amazon3.171.76.0/23}
NS	`ns-1528.awsdns-63.org` ⭐
		A	2600:9000:5305:f800::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1528.awsdns-63.org`
		A	205.251.197.248^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1528.awsdns-63.org`
NS	`ns-1998.awsdns-57.co.uk`
		A	2600:9000:5307:ce00::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1998.awsdns-57.co.uk`
		A	205.251.199.206^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1998.awsdns-57.co.uk`
NS	`ns-206.awsdns-25.com`
		A	2600:9000:5300:ce00::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-206.awsdns-25.com`
		A	205.251.192.206^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-206.awsdns-25.com`
NS	`ns-817.awsdns-38.net`
		A	2600:9000:5303:3100::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-817.awsdns-38.net`
		A	205.251.195.49^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-817.awsdns-38.net`
SOA	`ns-1528.awsdns-63.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=1781546450

Same first word

cfutletter.com

DNS History

68 records (8 active, 60 former)

●NSns-1528.awsdns-63.org2026-02-19 → 2026-06-15 · 2 obs

● 2026-02-19 10:11:04
● 2026-06-15 18:27:22

●NSns-1998.awsdns-57.co.uk2026-02-19 → 2026-06-15 · 2 obs

● 2026-02-19 10:11:04
● 2026-06-15 18:27:22

●NSns-206.awsdns-25.com2026-02-19 → 2026-06-15 · 2 obs

● 2026-02-19 10:11:04
● 2026-06-15 18:27:22

●NSns-817.awsdns-38.net2026-02-19 → 2026-06-15 · 2 obs

● 2026-02-19 10:11:04
● 2026-06-15 18:27:22

○A108.158.137.292026-04-11 → 2026-04-11 · 4 obs

○ 2026-04-11 01:17:58
● 2026-04-11 15:18:52
○ 2026-04-12 00:14:32
○ 2026-06-15 18:27:22

○A108.158.137.42026-04-11 → 2026-04-11 · 4 obs

○ 2026-04-11 01:17:58
● 2026-04-11 15:18:52
○ 2026-04-12 00:14:32
○ 2026-06-15 18:27:22

○A108.158.137.432026-04-11 → 2026-04-11 · 4 obs

○ 2026-04-11 01:17:58
● 2026-04-11 15:18:52
○ 2026-04-12 00:14:32
○ 2026-06-15 18:27:22

○A108.158.137.672026-04-11 → 2026-04-11 · 4 obs

○ 2026-04-11 01:17:58
● 2026-04-11 15:18:52
○ 2026-04-12 00:14:32
○ 2026-06-15 18:27:22

○A13.225.47.1232026-05-19 → 2026-06-03 · 53 obs

○ 2026-05-19 04:20:36
● 2026-05-19 23:49:42
○ 2026-05-20 00:42:34
○ 2026-05-21 01:45:14
● 2026-05-21 02:40:48
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● 2026-05-21 07:12:18
○ 2026-05-21 09:25:18
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● 2026-05-21 16:36:48
● 2026-05-21 22:39:00
○ 2026-05-22 07:35:12
● 2026-05-22 19:13:58
○ 2026-05-22 21:36:28
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● 2026-05-23 03:40:24
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● 2026-05-23 12:10:34
● 2026-05-24 02:43:34
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● 2026-05-24 15:53:12
○ 2026-05-24 22:37:50
● 2026-05-24 23:15:36
● 2026-05-25 15:36:02
○ 2026-05-26 00:18:06
○ 2026-05-26 04:56:46
● 2026-05-26 18:21:32
● 2026-05-26 20:04:16
○ 2026-05-27 06:40:28
● 2026-05-27 07:12:46
○ 2026-05-27 07:50:14
○ 2026-05-27 21:30:24
● 2026-05-27 22:13:10
○ 2026-05-28 02:45:08
● 2026-05-28 04:01:44
○ 2026-05-28 04:52:06
○ 2026-05-28 17:26:32
● 2026-05-28 18:58:58
○ 2026-05-29 13:43:14
○ 2026-05-30 13:37:16
● 2026-05-30 14:20:30
● 2026-05-30 16:01:06
○ 2026-05-31 18:35:32
○ 2026-06-02 05:45:12
● 2026-06-02 06:52:38
● 2026-06-02 08:03:44
○ 2026-06-02 10:14:58
● 2026-06-02 14:32:30
● 2026-06-03 08:00:18
○ 2026-06-03 09:08:22
● 2026-06-03 14:04:22
○ 2026-06-08 03:32:32
○ 2026-06-15 18:27:22

○A13.225.47.472026-05-19 → 2026-06-03 · 53 obs

○A13.225.47.812026-05-19 → 2026-06-03 · 53 obs

○A13.225.47.902026-05-19 → 2026-06-03 · 53 obs

○A13.33.109.1272026-04-21 → 2026-05-21 · 34 obs

○ 2026-04-19 23:12:44
● 2026-04-21 03:50:32
○ 2026-04-22 07:01:30
● 2026-04-23 23:21:12
○ 2026-04-24 16:30:44
○ 2026-04-27 22:49:06
● 2026-04-28 13:39:14
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○ 2026-04-29 03:34:30
● 2026-04-29 04:37:26
○ 2026-04-29 06:20:28
● 2026-04-29 10:25:14
○ 2026-04-29 13:47:38
○ 2026-04-30 07:45:26
● 2026-05-01 04:54:30
○ 2026-05-01 05:38:44
● 2026-05-02 03:05:20
○ 2026-05-02 04:02:00
● 2026-05-02 22:28:32
○ 2026-05-02 23:16:00
○ 2026-05-08 12:32:28
● 2026-05-09 00:52:04
○ 2026-05-09 09:39:14
○ 2026-05-11 15:20:08
● 2026-05-11 21:26:32
○ 2026-05-12 01:01:38
○ 2026-05-19 23:49:42
● 2026-05-20 00:42:34
○ 2026-05-20 20:59:00
● 2026-05-21 01:45:14
○ 2026-05-21 02:40:48
● 2026-05-21 05:53:34
○ 2026-05-21 07:12:18
○ 2026-06-15 18:27:22

○A13.33.109.362026-04-21 → 2026-05-21 · 34 obs

○A13.33.109.642026-04-21 → 2026-05-21 · 34 obs

○A13.33.109.792026-04-21 → 2026-05-21 · 34 obs

○A13.33.129.242026-05-06 → 2026-06-01 · 10 obs

○ 2026-05-03 19:07:30
● 2026-05-06 00:32:56
○ 2026-05-07 15:38:22
○ 2026-05-11 04:59:48
● 2026-05-11 15:20:08
○ 2026-05-11 21:26:32
○ 2026-06-01 20:14:32
● 2026-06-01 21:37:38
○ 2026-06-02 05:45:12
○ 2026-06-15 18:27:22

○A13.33.129.32026-05-06 → 2026-06-01 · 10 obs

○A13.33.129.372026-05-06 → 2026-06-01 · 10 obs

○A13.33.129.502026-05-06 → 2026-06-01 · 10 obs

○A13.35.20.1162026-05-27 → 2026-06-03 · 29 obs

○ 2026-05-27 13:01:28
● 2026-05-27 18:12:56
● 2026-05-27 20:06:06
○ 2026-05-27 21:30:24
○ 2026-05-28 04:52:06
● 2026-05-28 07:37:42
● 2026-05-28 09:06:52
○ 2026-05-28 13:36:06
● 2026-05-28 17:26:32
○ 2026-05-28 18:58:58
○ 2026-05-29 13:43:14
● 2026-05-29 15:20:06
○ 2026-05-29 17:32:58
○ 2026-05-30 04:26:48
● 2026-05-30 13:04:20
○ 2026-05-30 13:37:16
○ 2026-05-31 18:35:32
● 2026-06-01 16:42:36
● 2026-06-01 20:14:32
○ 2026-06-01 21:37:38
● 2026-06-02 05:45:12
○ 2026-06-02 06:52:38
○ 2026-06-02 08:03:44
● 2026-06-02 10:14:58
○ 2026-06-02 14:32:30
○ 2026-06-03 08:00:18
● 2026-06-03 09:08:22
○ 2026-06-03 14:04:22
○ 2026-06-15 18:27:22

○A13.35.20.682026-05-27 → 2026-06-03 · 29 obs

○A13.35.20.832026-05-27 → 2026-06-03 · 29 obs

○A13.35.20.982026-05-27 → 2026-06-03 · 29 obs

○A18.154.84.1232026-03-07 → 2026-05-01 · 10 obs

○ 2026-03-07 02:59:08
● 2026-03-07 04:11:18
○ 2026-03-07 05:06:50
○ 2026-04-11 00:11:30
● 2026-04-11 01:17:58
○ 2026-04-11 15:18:52
○ 2026-05-01 04:54:30
● 2026-05-01 05:38:44
○ 2026-05-02 03:05:20
○ 2026-06-15 18:27:22

○A18.154.84.252026-03-07 → 2026-05-01 · 10 obs

○A18.154.84.482026-03-07 → 2026-05-01 · 10 obs

○A18.154.84.992026-03-07 → 2026-05-01 · 10 obs

○A18.164.124.1002026-03-14 → 2026-03-14 · 4 obs

○ 2026-03-13 13:53:58
● 2026-03-14 04:52:22
○ 2026-03-14 06:37:18
○ 2026-06-15 18:27:22

○A18.164.124.192026-03-14 → 2026-03-14 · 4 obs

○ 2026-03-13 13:53:58
● 2026-03-14 04:52:22
○ 2026-03-14 06:37:18
○ 2026-06-15 18:27:22

○A18.164.124.602026-03-14 → 2026-03-14 · 4 obs

○ 2026-03-13 13:53:58
● 2026-03-14 04:52:22
○ 2026-03-14 06:37:18
○ 2026-06-15 18:27:22

○A18.164.124.912026-03-14 → 2026-03-14 · 4 obs

○ 2026-03-13 13:53:58
● 2026-03-14 04:52:22
○ 2026-03-14 06:37:18
○ 2026-06-15 18:27:22

○A18.164.68.112026-02-19 → 2026-06-13 · 98 obs

● 2026-02-19 10:11:04
○ 2026-02-21 14:15:58
○ 2026-03-03 13:40:02
● 2026-03-04 01:02:00
○ 2026-03-04 13:25:40
● 2026-03-04 19:40:18
○ 2026-03-05 06:14:02
○ 2026-03-05 23:21:40
● 2026-03-06 02:45:40
○ 2026-03-07 02:59:08
○ 2026-03-07 05:06:50
● 2026-03-07 17:45:08
○ 2026-03-07 23:37:50
● 2026-03-09 02:53:50
● 2026-03-09 05:29:46
○ 2026-03-10 07:23:14
● 2026-03-10 23:36:54
● 2026-03-13 04:12:24
○ 2026-03-13 06:27:00
○ 2026-03-14 04:52:22
● 2026-03-14 06:37:18
● 2026-03-16 01:01:24
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● 2026-03-17 04:28:56
● 2026-03-17 08:26:08
○ 2026-03-17 13:20:28
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● 2026-03-19 01:13:36
○ 2026-03-19 11:30:36
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● 2026-03-20 02:47:38
○ 2026-03-20 11:19:00
● 2026-03-21 02:02:28
● 2026-03-30 01:48:44
○ 2026-03-31 12:13:16
● 2026-03-31 17:08:56
● 2026-04-04 00:03:54
○ 2026-04-04 21:55:02
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● 2026-04-05 02:46:18
● 2026-04-10 00:03:46
○ 2026-04-10 07:07:12
○ 2026-04-12 01:15:14
● 2026-04-12 02:05:44
○ 2026-04-12 02:46:06
○ 2026-04-12 03:46:38
● 2026-04-12 05:03:36
○ 2026-04-12 17:54:50
○ 2026-04-12 23:28:08
● 2026-04-13 00:39:46
● 2026-04-14 04:36:02
○ 2026-04-15 04:51:40
● 2026-04-15 10:34:00
○ 2026-04-16 01:14:58
● 2026-04-16 01:53:22
● 2026-04-16 15:27:40
○ 2026-04-18 03:09:12
● 2026-04-18 22:23:54
● 2026-04-19 23:12:44
○ 2026-04-21 03:50:32
● 2026-04-22 07:01:30
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● 2026-04-24 21:27:58
○ 2026-04-25 17:25:50
○ 2026-04-26 14:04:24
● 2026-04-27 15:13:52
○ 2026-04-27 22:49:06
○ 2026-04-28 13:39:14
● 2026-04-28 14:23:06
○ 2026-04-29 03:34:30
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● 2026-04-29 13:47:38
○ 2026-04-30 07:45:26
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● 2026-05-02 23:16:00
○ 2026-05-03 19:07:30
○ 2026-05-06 00:32:56
● 2026-05-07 15:38:22
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● 2026-05-08 12:32:28
○ 2026-05-09 00:52:04
● 2026-05-09 09:39:14
● 2026-05-11 04:59:48
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○ 2026-05-11 21:26:32
● 2026-05-12 01:01:38
● 2026-05-19 04:20:36
○ 2026-05-19 23:49:42
○ 2026-06-08 03:32:32
● 2026-06-08 09:46:36
● 2026-06-08 16:37:06
○ 2026-06-09 04:06:48
○ 2026-06-12 17:04:54
● 2026-06-13 08:42:26
○ 2026-06-14 13:19:50
○ 2026-06-15 18:27:22

○A18.164.68.452026-02-19 → 2026-06-13 · 98 obs

○A18.164.68.772026-02-19 → 2026-06-13 · 98 obs

○A18.164.68.932026-02-19 → 2026-06-13 · 98 obs

○A3.162.247.1292026-03-31 → 2026-06-09 · 47 obs

○ 2026-03-30 01:48:44
● 2026-03-31 12:13:16
○ 2026-03-31 17:08:56
○ 2026-04-04 21:55:02
● 2026-04-04 23:29:42
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● 2026-04-25 17:25:50
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● 2026-04-27 22:49:06
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● 2026-06-09 04:06:48
○ 2026-06-11 21:22:32
○ 2026-06-15 18:27:22

○A3.162.247.132026-03-31 → 2026-06-09 · 47 obs

○A3.162.247.312026-03-31 → 2026-06-09 · 47 obs

○A3.162.247.562026-03-31 → 2026-06-09 · 47 obs

○A3.163.10.152026-05-27 → 2026-06-08 · 29 obs

○ 2026-05-26 20:04:16
● 2026-05-27 06:40:28
○ 2026-05-27 07:12:46
● 2026-05-27 07:50:14
○ 2026-05-27 08:26:04
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● 2026-05-27 21:30:24
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● 2026-05-28 04:52:06
○ 2026-05-28 07:37:42
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● 2026-05-28 13:36:06
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○ 2026-05-28 18:58:58
● 2026-05-29 13:43:14
○ 2026-05-29 15:20:06
● 2026-05-29 17:32:58
● 2026-05-30 04:26:48
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● 2026-05-30 13:37:16
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● 2026-05-31 18:35:32
○ 2026-06-01 16:42:36
○ 2026-06-03 14:04:22
● 2026-06-08 03:32:32
○ 2026-06-08 09:46:36
○ 2026-06-15 18:27:22

○A3.163.10.272026-05-27 → 2026-06-08 · 29 obs

○A3.163.10.452026-05-27 → 2026-06-08 · 29 obs

○A3.163.10.982026-05-27 → 2026-06-08 · 29 obs

○A3.168.147.1212026-02-21 → 2026-03-20 · 38 obs

○ 2026-02-19 10:11:04
● 2026-02-21 14:15:58
● 2026-02-22 01:21:48
○ 2026-02-22 18:24:02
○ 2026-02-23 17:48:44
● 2026-02-23 19:52:18
● 2026-02-23 22:18:06
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● 2026-02-28 20:07:34
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● 2026-03-03 13:40:02
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● 2026-03-04 13:25:40
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● 2026-03-05 06:14:02
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● 2026-03-07 23:37:50
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● 2026-03-10 07:23:14
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● 2026-03-13 06:27:00
● 2026-03-13 13:53:58
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● 2026-03-17 13:20:28
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○ 2026-03-19 01:13:36
● 2026-03-19 11:30:36
● 2026-03-20 02:06:18
○ 2026-03-20 02:47:38
○ 2026-06-15 18:27:22

○A3.168.147.1252026-02-21 → 2026-03-20 · 38 obs

○A3.168.147.282026-02-21 → 2026-03-20 · 38 obs

○A3.168.147.672026-02-21 → 2026-03-20 · 38 obs

●A3.171.76.1002026-02-22 → 2026-06-15 · 43 obs

○ 2026-02-22 01:21:48
● 2026-02-22 18:24:02
● 2026-02-23 17:48:44
○ 2026-02-23 19:52:18
○ 2026-02-23 22:18:06
● 2026-02-25 11:29:44
● 2026-02-26 13:00:10
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●A3.171.76.532026-02-22 → 2026-06-15 · 43 obs

●A3.171.76.602026-02-22 → 2026-06-15 · 43 obs

●A3.171.76.722026-02-22 → 2026-06-15 · 43 obs

○A3.174.29.1172026-04-10 → 2026-04-18 · 23 obs

○ 2026-04-10 07:07:12
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○A3.174.29.652026-04-10 → 2026-04-18 · 23 obs

○A3.174.29.82026-04-10 → 2026-04-18 · 23 obs

○A3.174.29.962026-04-10 → 2026-04-18 · 23 obs

○A52.84.80.132026-06-11 → 2026-06-14 · 7 obs

○ 2026-06-09 04:06:48
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○A52.84.80.442026-06-11 → 2026-06-14 · 7 obs

○ 2026-06-09 04:06:48
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○A52.84.80.572026-06-11 → 2026-06-14 · 7 obs

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○A52.84.80.802026-06-11 → 2026-06-14 · 7 obs

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○A54.230.253.1222026-04-04 → 2026-04-04 · 4 obs

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○A54.230.253.332026-04-04 → 2026-04-04 · 4 obs

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○A54.230.253.592026-04-04 → 2026-04-04 · 4 obs

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○A54.230.253.792026-04-04 → 2026-04-04 · 4 obs

○ 2026-04-04 00:03:54
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○A65.9.168.1142026-05-27 → 2026-05-28 · 8 obs

○ 2026-05-27 07:50:14
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○A65.9.168.1242026-05-27 → 2026-05-28 · 8 obs

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○A65.9.168.972026-05-27 → 2026-05-28 · 8 obs

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○A65.9.168.992026-05-27 → 2026-05-28 · 8 obs

○ 2026-05-27 07:50:14
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🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
cfutletter.com	ns-206.awsdns-25.com, ns-817.awsdns-38.net, ns-1998.awsdns-57.co.uk, ns-1528.awsdns-63.org	2 records

✅ Authoritative Response

Server:205.251.199.206

NS records: ns-206.awsdns-25.com, ns-817.awsdns-38.net, ns-1998.awsdns-57.co.uk, ns-1528.awsdns-63.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cfutletter.com (unsigned zone)

⏱️ Timing

Total: 401ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`3.171.76.53, 3.171.76.100...`
NS	4	`ns-1528.awsdns-63.org, ns-1998.awsdns-57.co.uk...`
SOA	1	`ns-1528.awsdns-63.org awsdns-hostmaster.`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-206.awsdns-25.com, ns-206.awsdns-25.com)

Analysis

IP Addresses

cfutletter.com directs to four IP numbers, which are 3.171.76.53, 3.171.76.60, 3.171.76.72 and 3.171.76.100.

Two other host names, along with www.bulbcorp.jp, sunjayj.com and d1lirnndj97odq.cloudfront.net, also share IP numbers with cfutletter.com.

Name Servers

The NS records for cfutletter.com point to four name servers: ns-206.awsdns-25.com, ns-817.awsdns-38.net, ns-1528.awsdns-63.org and ns-1998.awsdns-57.co.uk.

The name servers of cfutletter.com overlap at least partially with those of other domains — among them nofxgvn.com, dus2lji3eaik0.cloudfront.net, boxypluckunrelated.com and two more.

These name servers commonly appear alongside the name servers ns-1674.awsdns-17.co.uk and ns-335.awsdns-41.com.

Each of the four hosts ns-206.awsdns-25.com, ns-817.awsdns-38.net, ns-1528.awsdns-63.org and ns-1998.awsdns-57.co.uk has two IP addresses. ns-206.awsdns-25.com points to 205.251.192.206 and 2600:9000:5300:ce00::1. ns-817.awsdns-38.net points to 205.251.195.49 and 2600:9000:5303:3100::1. ns-1528.awsdns-63.org points to 205.251.197.248 and 2600:9000:5305:f800::1. ns-1998.awsdns-57.co.uk points to 205.251.199.206 and 2600:9000:5307:ce00::1.

cfutletter.com - robtex.com

cfutletter.com

com

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

`cfutletter.com`

`com`