`challenge-alliance.com`

DNSSEC	⚠️ Not signed
A	18.67.145.36^{🇺🇸 Amazon18.67.144.0/23}
		PTR	`server-18-67-145-36.gru1.r.cloudfront.net`
A	18.67.145.65^{🇺🇸 Amazon18.67.144.0/23}
A	18.67.145.66^{🇺🇸 Amazon18.67.144.0/23}
A	18.67.145.84^{🇺🇸 Amazon18.67.144.0/23}
NS	`ns-527.awsdns-01.net` ⭐
		A	2600:9000:5302:f00::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-527.awsdns-01.net`
		A	205.251.194.15^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-527.awsdns-01.net`
NS	`ns-1443.awsdns-52.org`
		A	2600:9000:5305:a300::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1443.awsdns-52.org`
		A	205.251.197.163^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1443.awsdns-52.org`
NS	`ns-1777.awsdns-30.co.uk`
		A	2600:9000:5306:f100::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1777.awsdns-30.co.uk`
		A	205.251.198.241^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1777.awsdns-30.co.uk`
NS	`ns-362.awsdns-45.com`
		A	2600:9000:5301:6a00::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-362.awsdns-45.com`
		A	205.251.193.106^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-362.awsdns-45.com`
SOA	`ns-527.awsdns-01.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=1786536654

Same first word

challenge-alliance.com

DNS History

102 records (8 active, 94 former)

○NSdns1.name-services.com2018-06-28 → 2018-06-28 · 3 obs

● 2018-06-28 12:00:28
○ 2026-05-12 18:41:52
○ 2026-08-12 12:16:10

○NSdns2.name-services.com2018-06-28 → 2018-06-28 · 3 obs

● 2018-06-28 12:00:28
○ 2026-05-12 18:41:52
○ 2026-08-12 12:16:10

○NSdns3.name-services.com2018-06-28 → 2018-06-28 · 3 obs

● 2018-06-28 12:00:28
○ 2026-05-12 18:41:52
○ 2026-08-12 12:16:10

○NSdns4.name-services.com2018-06-28 → 2018-06-28 · 3 obs

● 2018-06-28 12:00:28
○ 2026-05-12 18:41:52
○ 2026-08-12 12:16:10

○NSdns5.name-services.com2018-06-28 → 2018-06-28 · 3 obs

● 2018-06-28 12:00:28
○ 2026-05-12 18:41:52
○ 2026-08-12 12:16:10

●NSns-1443.awsdns-52.org2026-05-12 → 2026-08-12 · 3 obs

○ 2018-06-28 12:00:28
● 2026-05-12 18:41:52
● 2026-08-12 12:16:10

●NSns-1777.awsdns-30.co.uk2026-05-12 → 2026-08-12 · 3 obs

○ 2018-06-28 12:00:28
● 2026-05-12 18:41:52
● 2026-08-12 12:16:10

●NSns-362.awsdns-45.com2026-05-12 → 2026-08-12 · 3 obs

○ 2018-06-28 12:00:28
● 2026-05-12 18:41:52
● 2026-08-12 12:16:10

●NSns-527.awsdns-01.net2026-05-12 → 2026-08-12 · 3 obs

○ 2018-06-28 12:00:28
● 2026-05-12 18:41:52
● 2026-08-12 12:16:10

○A108.139.15.1202026-05-21 → 2026-07-30 · 18 obs

○ 2026-05-21 10:47:26
● 2026-05-21 12:59:26
○ 2026-05-21 20:05:14
● 2026-06-19 22:40:36
○ 2026-06-19 23:19:20
● 2026-06-20 20:20:02
○ 2026-06-21 14:39:50
● 2026-06-22 22:07:46
● 2026-06-25 00:19:18
○ 2026-06-25 20:09:22
● 2026-06-26 10:20:22
○ 2026-06-27 07:45:30
● 2026-07-28 14:43:48
● 2026-07-28 19:32:38
○ 2026-07-30 02:20:12
● 2026-07-30 03:36:08
○ 2026-07-30 18:50:52
○ 2026-08-12 12:16:10

○A108.139.15.302026-05-21 → 2026-07-30 · 18 obs

○A108.139.15.482026-05-21 → 2026-07-30 · 18 obs

○A108.139.15.892026-05-21 → 2026-07-30 · 18 obs

○A13.227.231.1112026-07-25 → 2026-07-28 · 18 obs

○ 2026-07-24 16:38:42
● 2026-07-25 12:54:38
○ 2026-07-25 13:36:58
● 2026-07-25 20:22:24
○ 2026-07-26 03:29:52
○ 2026-07-26 06:54:44
● 2026-07-26 08:22:26
○ 2026-07-26 16:22:00
● 2026-07-26 20:20:56
○ 2026-07-26 20:55:56
● 2026-07-27 16:22:02
● 2026-07-27 20:22:10
○ 2026-07-28 02:15:26
● 2026-07-28 04:22:02
○ 2026-07-28 06:56:02
● 2026-07-28 12:22:20
○ 2026-07-28 14:43:48
○ 2026-08-12 12:16:10

○A13.227.231.412026-07-25 → 2026-07-28 · 18 obs

○A13.227.231.642026-07-25 → 2026-07-28 · 18 obs

○A13.227.231.722026-07-25 → 2026-07-28 · 18 obs

○A13.33.109.1202026-05-12 → 2026-05-20 · 10 obs

○ 2026-05-12 18:41:52
● 2026-05-12 23:15:24
○ 2026-05-12 23:57:12
○ 2026-05-14 00:51:56
● 2026-05-14 09:00:06
○ 2026-05-15 05:12:56
○ 2026-05-19 04:56:18
● 2026-05-20 11:45:16
○ 2026-05-21 01:17:58
○ 2026-08-12 12:16:10

○A13.33.109.452026-05-12 → 2026-05-20 · 10 obs

○A13.33.109.472026-05-12 → 2026-05-20 · 10 obs

○A13.33.109.672026-05-12 → 2026-05-20 · 10 obs

○A13.33.129.1292026-06-01 → 2026-06-07 · 7 obs

○ 2026-06-01 18:53:52
● 2026-06-01 22:37:06
○ 2026-06-02 01:17:16
○ 2026-06-07 17:54:48
● 2026-06-07 18:55:36
○ 2026-06-07 21:29:30
○ 2026-08-12 12:16:10

○A13.33.129.212026-06-01 → 2026-06-07 · 7 obs

○ 2026-06-01 18:53:52
● 2026-06-01 22:37:06
○ 2026-06-02 01:17:16
○ 2026-06-07 17:54:48
● 2026-06-07 18:55:36
○ 2026-06-07 21:29:30
○ 2026-08-12 12:16:10

○A13.33.129.932026-06-01 → 2026-06-07 · 7 obs

○ 2026-06-01 18:53:52
● 2026-06-01 22:37:06
○ 2026-06-02 01:17:16
○ 2026-06-07 17:54:48
● 2026-06-07 18:55:36
○ 2026-06-07 21:29:30
○ 2026-08-12 12:16:10

○A13.33.129.992026-06-01 → 2026-06-07 · 7 obs

○ 2026-06-01 18:53:52
● 2026-06-01 22:37:06
○ 2026-06-02 01:17:16
○ 2026-06-07 17:54:48
● 2026-06-07 18:55:36
○ 2026-06-07 21:29:30
○ 2026-08-12 12:16:10

○A13.33.131.1142026-07-01 → 2026-07-27 · 18 obs

○ 2026-07-01 21:47:40
● 2026-07-01 23:29:10
○ 2026-07-02 00:35:24
● 2026-07-03 02:07:46
○ 2026-07-03 04:21:06
○ 2026-07-03 07:40:54
● 2026-07-13 21:19:26
○ 2026-07-14 14:56:50
● 2026-07-23 05:06:36
○ 2026-07-23 05:56:52
● 2026-07-24 16:38:42
● 2026-07-25 16:35:22
○ 2026-07-26 08:22:26
● 2026-07-26 20:55:56
○ 2026-07-27 06:41:02
● 2026-07-27 17:10:22
○ 2026-07-27 18:17:38
○ 2026-08-12 12:16:10

○A13.33.131.1292026-07-01 → 2026-07-27 · 18 obs

○A13.33.131.382026-07-01 → 2026-07-27 · 18 obs

○A13.33.131.662026-07-01 → 2026-07-27 · 18 obs

○A13.33.235.1262026-07-11 → 2026-08-11 · 30 obs

○ 2026-07-11 06:38:42
● 2026-07-11 12:22:14
○ 2026-07-11 12:52:54
● 2026-07-12 00:21:46
○ 2026-07-12 01:08:04
● 2026-07-13 20:20:46
○ 2026-07-13 21:19:26
● 2026-07-15 05:21:54
○ 2026-07-15 13:17:52
● 2026-07-16 04:20:06
○ 2026-07-16 17:47:08
○ 2026-07-17 09:16:40
● 2026-07-19 00:22:12
● 2026-07-19 16:22:08
○ 2026-07-19 19:51:42
● 2026-07-20 16:21:44
○ 2026-07-20 17:07:50
● 2026-08-05 12:22:04
○ 2026-08-05 15:52:22
● 2026-08-06 20:22:46
○ 2026-08-06 23:10:12
● 2026-08-07 16:22:28
○ 2026-08-07 18:09:44
● 2026-08-08 03:04:06
○ 2026-08-08 03:58:40
● 2026-08-08 11:59:10
○ 2026-08-08 14:33:04
● 2026-08-11 18:18:22
○ 2026-08-11 19:12:26
○ 2026-08-12 12:16:10

○A13.33.235.132026-07-11 → 2026-08-11 · 30 obs

○A13.33.235.632026-07-11 → 2026-08-11 · 30 obs

○A13.33.235.712026-07-11 → 2026-08-11 · 30 obs

○A13.35.107.1092026-07-13 → 2026-08-01 · 17 obs

○ 2026-07-12 01:08:04
● 2026-07-13 18:11:56
○ 2026-07-13 20:20:46
● 2026-07-14 00:08:56
○ 2026-07-14 02:11:18
○ 2026-07-17 12:19:36
● 2026-07-20 15:24:40
○ 2026-07-21 21:42:40
○ 2026-07-23 08:22:00
● 2026-07-24 15:58:24
○ 2026-07-25 20:22:24
● 2026-07-27 18:17:38
● 2026-07-31 14:58:12
○ 2026-07-31 18:35:22
● 2026-08-01 09:52:14
○ 2026-08-01 15:52:50
○ 2026-08-12 12:16:10

○A13.35.107.1132026-07-13 → 2026-08-01 · 17 obs

○A13.35.107.1252026-07-13 → 2026-08-01 · 17 obs

○A13.35.107.222026-07-13 → 2026-08-01 · 17 obs

○A18.155.21.172026-08-01 → 2026-08-01 · 4 obs

○ 2026-07-31 18:35:22
● 2026-08-01 07:01:02
○ 2026-08-01 08:21:26
○ 2026-08-12 12:16:10

○A18.155.21.32026-08-01 → 2026-08-01 · 4 obs

○ 2026-07-31 18:35:22
● 2026-08-01 07:01:02
○ 2026-08-01 08:21:26
○ 2026-08-12 12:16:10

○A18.155.21.662026-08-01 → 2026-08-01 · 4 obs

○ 2026-07-31 18:35:22
● 2026-08-01 07:01:02
○ 2026-08-01 08:21:26
○ 2026-08-12 12:16:10

○A18.155.21.72026-08-01 → 2026-08-01 · 4 obs

○ 2026-07-31 18:35:22
● 2026-08-01 07:01:02
○ 2026-08-01 08:21:26
○ 2026-08-12 12:16:10

○A18.164.144.102026-05-27 → 2026-06-05 · 16 obs

○ 2026-05-27 10:14:42
● 2026-05-27 13:58:22
○ 2026-05-27 15:38:56
● 2026-05-27 16:18:48
○ 2026-05-27 21:33:46
○ 2026-05-29 10:58:04
● 2026-05-29 17:17:06
○ 2026-05-29 21:12:10
○ 2026-05-30 07:12:30
● 2026-05-30 10:41:42
● 2026-05-30 16:30:32
○ 2026-05-30 20:12:40
○ 2026-06-05 08:00:58
● 2026-06-05 11:08:18
○ 2026-06-05 12:10:14
○ 2026-08-12 12:16:10

○A18.164.144.182026-05-27 → 2026-06-05 · 16 obs

○A18.164.144.462026-05-27 → 2026-06-05 · 16 obs

○A18.164.144.512026-05-27 → 2026-06-05 · 16 obs

○A18.165.140.1102026-07-14 → 2026-07-14 · 4 obs

○ 2026-07-14 02:11:18
● 2026-07-14 04:21:38
○ 2026-07-14 08:12:10
○ 2026-08-12 12:16:10

○A18.165.140.502026-07-14 → 2026-07-14 · 4 obs

○ 2026-07-14 02:11:18
● 2026-07-14 04:21:38
○ 2026-07-14 08:12:10
○ 2026-08-12 12:16:10

○A18.165.140.522026-07-14 → 2026-07-14 · 4 obs

○ 2026-07-14 02:11:18
● 2026-07-14 04:21:38
○ 2026-07-14 08:12:10
○ 2026-08-12 12:16:10

○A18.165.140.552026-07-14 → 2026-07-14 · 4 obs

○ 2026-07-14 02:11:18
● 2026-07-14 04:21:38
○ 2026-07-14 08:12:10
○ 2026-08-12 12:16:10

●A18.67.145.362026-05-15 → 2026-08-12 · 45 obs

○ 2026-05-14 09:00:06
● 2026-05-15 05:12:56
○ 2026-05-17 13:50:18
○ 2026-05-22 06:13:20
● 2026-05-22 07:23:54
○ 2026-05-22 09:52:28
○ 2026-06-15 18:55:50
● 2026-06-30 22:17:20
○ 2026-07-01 10:30:44
○ 2026-07-24 05:37:54
● 2026-07-28 02:45:30
● 2026-07-30 20:20:30
○ 2026-08-03 04:23:08
● 2026-08-03 12:36:24
○ 2026-08-03 16:22:34
● 2026-08-04 05:28:46
○ 2026-08-04 12:21:56
● 2026-08-04 16:22:12
○ 2026-08-04 20:21:26
● 2026-08-05 15:52:22
○ 2026-08-06 08:42:22
● 2026-08-06 23:10:12
○ 2026-08-07 10:21:20
● 2026-08-07 15:29:26
○ 2026-08-07 16:22:28
● 2026-08-07 18:09:44
○ 2026-08-08 03:04:06
● 2026-08-08 03:58:40
○ 2026-08-08 11:59:10
● 2026-08-08 14:33:04
○ 2026-08-09 20:21:30
● 2026-08-10 00:12:48
○ 2026-08-10 12:22:14
● 2026-08-10 13:54:10
○ 2026-08-10 16:22:36
● 2026-08-10 18:13:26
○ 2026-08-10 22:08:30
● 2026-08-11 00:36:04
○ 2026-08-11 08:20:40
● 2026-08-11 14:42:24
○ 2026-08-11 18:18:22
● 2026-08-12 00:47:00
○ 2026-08-12 05:24:48
● 2026-08-12 08:32:24
● 2026-08-12 12:16:10

●A18.67.145.652026-05-15 → 2026-08-12 · 45 obs

●A18.67.145.662026-05-15 → 2026-08-12 · 45 obs

●A18.67.145.842026-05-15 → 2026-08-12 · 45 obs

○A209.200.154.512018-06-28 → 2018-06-28 · 3 obs

● 2018-06-28 12:00:28
○ 2026-05-12 18:41:52
○ 2026-08-12 12:16:10

○A3.161.136.122026-06-27 → 2026-06-29 · 10 obs

○ 2026-06-27 07:45:30
● 2026-06-27 13:56:10
○ 2026-06-27 20:25:04
● 2026-06-28 12:13:06
○ 2026-06-28 17:17:38
● 2026-06-29 04:21:08
○ 2026-06-29 09:17:24
● 2026-06-29 19:08:30
○ 2026-06-29 20:12:14
○ 2026-08-12 12:16:10

○A3.161.136.412026-06-27 → 2026-06-29 · 10 obs

○A3.161.136.812026-06-27 → 2026-06-29 · 10 obs

○A3.161.136.882026-06-27 → 2026-06-29 · 10 obs

○A3.164.182.1122026-05-27 → 2026-05-27 · 7 obs

○ 2026-05-24 20:25:38
● 2026-05-27 01:02:56
○ 2026-05-27 02:37:36
○ 2026-05-27 04:58:14
● 2026-05-27 06:32:18
○ 2026-05-27 07:22:14
○ 2026-08-12 12:16:10

○A3.164.182.132026-05-27 → 2026-05-27 · 7 obs

○ 2026-05-24 20:25:38
● 2026-05-27 01:02:56
○ 2026-05-27 02:37:36
○ 2026-05-27 04:58:14
● 2026-05-27 06:32:18
○ 2026-05-27 07:22:14
○ 2026-08-12 12:16:10

○A3.164.182.202026-05-27 → 2026-05-27 · 7 obs

○ 2026-05-24 20:25:38
● 2026-05-27 01:02:56
○ 2026-05-27 02:37:36
○ 2026-05-27 04:58:14
● 2026-05-27 06:32:18
○ 2026-05-27 07:22:14
○ 2026-08-12 12:16:10

○A3.164.182.892026-05-27 → 2026-05-27 · 7 obs

○ 2026-05-24 20:25:38
● 2026-05-27 01:02:56
○ 2026-05-27 02:37:36
○ 2026-05-27 04:58:14
● 2026-05-27 06:32:18
○ 2026-05-27 07:22:14
○ 2026-08-12 12:16:10

○A3.165.148.1172026-05-29 → 2026-05-29 · 4 obs

○ 2026-05-28 23:47:36
● 2026-05-29 03:31:38
○ 2026-05-29 07:20:38
○ 2026-08-12 12:16:10

○A3.165.148.152026-05-29 → 2026-05-29 · 4 obs

○ 2026-05-28 23:47:36
● 2026-05-29 03:31:38
○ 2026-05-29 07:20:38
○ 2026-08-12 12:16:10

○A3.165.148.242026-05-29 → 2026-05-29 · 4 obs

○ 2026-05-28 23:47:36
● 2026-05-29 03:31:38
○ 2026-05-29 07:20:38
○ 2026-08-12 12:16:10

○A3.165.148.902026-05-29 → 2026-05-29 · 4 obs

○ 2026-05-28 23:47:36
● 2026-05-29 03:31:38
○ 2026-05-29 07:20:38
○ 2026-08-12 12:16:10

○A3.166.65.102026-05-12 → 2026-07-23 · 18 obs

○ 2018-06-28 12:00:28
● 2026-05-12 18:41:52
○ 2026-05-12 23:15:24
● 2026-05-12 23:57:12
● 2026-05-17 13:50:18
○ 2026-05-20 11:45:16
○ 2026-06-08 18:12:40
● 2026-06-09 17:31:06
● 2026-06-17 16:29:06
○ 2026-06-18 14:22:24
○ 2026-06-24 00:37:34
● 2026-06-25 11:55:58
○ 2026-06-28 12:13:06
● 2026-06-30 21:40:32
○ 2026-06-30 22:17:20
● 2026-07-23 11:06:04
○ 2026-07-23 12:22:06
○ 2026-08-12 12:16:10

○A3.166.65.1022026-05-12 → 2026-07-23 · 18 obs

○A3.166.65.392026-05-12 → 2026-07-23 · 18 obs

○A3.166.65.882026-05-12 → 2026-07-23 · 18 obs

○A3.167.56.1272026-08-06 → 2026-08-06 · 4 obs

○ 2026-08-05 15:52:22
● 2026-08-06 08:42:22
○ 2026-08-06 20:22:46
○ 2026-08-12 12:16:10

○A3.167.56.362026-08-06 → 2026-08-06 · 4 obs

○ 2026-08-05 15:52:22
● 2026-08-06 08:42:22
○ 2026-08-06 20:22:46
○ 2026-08-12 12:16:10

○A3.167.56.502026-08-06 → 2026-08-06 · 4 obs

○ 2026-08-05 15:52:22
● 2026-08-06 08:42:22
○ 2026-08-06 20:22:46
○ 2026-08-12 12:16:10

○A3.167.56.862026-08-06 → 2026-08-06 · 4 obs

○ 2026-08-05 15:52:22
● 2026-08-06 08:42:22
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○A3.167.69.282026-05-21 → 2026-08-12 · 28 obs

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○A3.167.69.332026-05-21 → 2026-08-12 · 28 obs

○A3.167.69.592026-05-21 → 2026-08-12 · 28 obs

○A3.167.69.882026-05-21 → 2026-08-12 · 28 obs

○A3.170.185.242026-06-30 → 2026-07-02 · 18 obs

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○A3.170.185.362026-06-30 → 2026-07-02 · 18 obs

○A3.170.185.942026-06-30 → 2026-07-02 · 18 obs

○A3.170.185.972026-06-30 → 2026-07-02 · 18 obs

○A3.174.26.102026-06-06 → 2026-06-07 · 8 obs

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○A3.174.26.1272026-06-06 → 2026-06-07 · 8 obs

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○A3.174.26.492026-06-06 → 2026-06-07 · 8 obs

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○A3.174.26.562026-06-06 → 2026-06-07 · 8 obs

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○A54.192.55.102026-05-21 → 2026-06-08 · 16 obs

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○A54.240.184.1002026-06-17 → 2026-07-27 · 11 obs

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○A99.84.215.1102026-07-03 → 2026-08-11 · 28 obs

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○A99.86.20.1162026-05-27 → 2026-06-01 · 16 obs

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○A99.86.20.182026-05-27 → 2026-06-01 · 16 obs

○A99.86.20.242026-05-27 → 2026-06-01 · 16 obs

○A99.86.20.872026-05-27 → 2026-06-01 · 16 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
challenge-alliance.com	ns-527.awsdns-01.net, ns-362.awsdns-45.com, ns-1777.awsdns-30.co.uk, ns-1443.awsdns-52.org	2 records

✅ Authoritative Response

Server:205.251.194.15

NS records: ns-527.awsdns-01.net, ns-362.awsdns-45.com, ns-1777.awsdns-30.co.uk, ns-1443.awsdns-52.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for challenge-alliance.com (unsigned zone)

⏱️ Timing

Total: 1530ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`3.167.69.33, 3.167.69.28...`
NS	4	`ns-1443.awsdns-52.org, ns-1777.awsdns-30.co.uk...`
SOA	1	`ns-527.awsdns-01.net awsdns-hostmaster.a`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-362.awsdns-45.com, ns-362.awsdns-45.com)

Analysis

IP Addresses

challenge-alliance.com resolves to four IP addresses: 18.67.145.36, 18.67.145.65, 18.67.145.66 and 18.67.145.84.

Among the host names that share IP numbers with challenge-alliance.com are ryancollerd.com, d1vuf8chi8bwkr.cloudfront.net, dddthmozaxvb5.cloudfront.net and two others.

Name Servers

The domain challenge-alliance.com is delegated to these four name servers: ns-362.awsdns-45.com, ns-527.awsdns-01.net, ns-1443.awsdns-52.org and ns-1777.awsdns-30.co.uk.

challenge-alliance.com partially shares its NS delegation with several other domains, including luvs.org, michaeljlewis.com, christian-loef.de and two others.

ns-362.awsdns-45.com, ns-527.awsdns-01.net, ns-1443.awsdns-52.org and ns-1777.awsdns-30.co.uk each carry two IP addresses. ns-362.awsdns-45.com has 205.251.193.106 and 2600:9000:5301:6a00::1; ns-527.awsdns-01.net has 205.251.194.15 and 2600:9000:5302:f00::1; ns-1443.awsdns-52.org has 205.251.197.163 and 2600:9000:5305:a300::1; ns-1777.awsdns-30.co.uk has 205.251.198.241 and 2600:9000:5306:f100::1.

challenge-alliance.com - robtex.com