usecore.app - dns.ninja

`usecore.app`

DNSSEC	⚠️ Not signed
A	18.160.41.36^{🇺🇸 Amazon18.160.40.0/23}
		PTR	`server-18-160-41-36.iad55.r.cloudfront.net`
A	18.160.41.45^{🇺🇸 Amazon18.160.40.0/23}
A	18.160.41.110^{🇺🇸 Amazon18.160.40.0/23}
A	18.160.41.112^{🇺🇸 Amazon18.160.40.0/23}
NS	`ns-648.awsdns-17.net` ⭐
		A	2600:9000:5302:8800::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-648.awsdns-17.net`
		A	205.251.194.136^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-648.awsdns-17.net`
NS	`ns-1292.awsdns-33.org`
		A	2600:9000:5305:c00::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1292.awsdns-33.org`
		A	205.251.197.12^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1292.awsdns-33.org`
NS	`ns-1760.awsdns-28.co.uk`
		A	2600:9000:5306:e000::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1760.awsdns-28.co.uk`
		A	205.251.198.224^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1760.awsdns-28.co.uk`
NS	`ns-375.awsdns-46.com`
		A	2600:9000:5301:7700::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-375.awsdns-46.com`
		A	205.251.193.119^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-375.awsdns-46.com`
SOA	`ns-648.awsdns-17.net`awsdns-hostmaster@amazon.com serial=1

`app`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns-tld1.charlestonroadregistry.com` ⭐
	NS	`ns-tld2.charlestonroadregistry.com`
	NS	`ns-tld3.charlestonroadregistry.com`
	NS	`ns-tld4.charlestonroadregistry.com`
	NS	`ns-tld5.charlestonroadregistry.com`
	SOA	`ns-tld1.charlestonroadregistry.com`cloud-dns-hostmaster@google.com serial=101427

🔒 HSTS Preload (+subdomains)

Subdomains

dev.usecore.app

Same first word

usecore.net

usecore.app

usecore.info

usecore.com

usecore.org

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osecure.fr

secureo.at

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eurosec.biz

sourcee.co.uk

seceuro.com

coursee.co

eurosec.lt

esource.com.au

esource.ir

ecosure.co.in

DNS History

92 records (8 active, 84 former)

●NSns-1292.awsdns-33.org2026-02-16 → 2026-08-10 · 2 obs

● 2026-02-16 14:02:38
● 2026-08-10 09:52:06

●NSns-1760.awsdns-28.co.uk2026-02-16 → 2026-08-10 · 2 obs

● 2026-02-16 14:02:38
● 2026-08-10 09:52:06

●NSns-375.awsdns-46.com2026-02-16 → 2026-08-10 · 2 obs

● 2026-02-16 14:02:38
● 2026-08-10 09:52:06

●NSns-648.awsdns-17.net2026-02-16 → 2026-08-10 · 2 obs

● 2026-02-16 14:02:38
● 2026-08-10 09:52:06

○A108.139.119.1062026-06-06 → 2026-06-08 · 11 obs

○ 2026-06-06 01:00:14
● 2026-06-06 20:32:16
● 2026-06-06 22:22:00
○ 2026-06-07 02:01:04
○ 2026-06-07 22:05:48
● 2026-06-07 23:00:54
● 2026-06-08 02:18:04
○ 2026-06-08 02:58:54
● 2026-06-08 04:10:46
○ 2026-06-08 08:36:54
○ 2026-08-10 09:52:06

○A108.139.119.1272026-06-06 → 2026-06-08 · 11 obs

○A108.139.119.482026-06-06 → 2026-06-08 · 11 obs

○A108.139.119.962026-06-06 → 2026-06-08 · 11 obs

○A13.225.47.1232026-05-19 → 2026-07-02 · 18 obs

○ 2026-05-19 05:18:42
● 2026-05-19 08:51:48
● 2026-05-19 13:53:10
○ 2026-05-19 16:48:54
● 2026-05-19 18:23:38
● 2026-05-30 13:14:08
○ 2026-05-31 10:19:54
○ 2026-06-03 18:10:32
● 2026-06-04 15:09:10
● 2026-06-07 02:01:04
○ 2026-06-08 04:10:46
● 2026-06-30 08:17:26
○ 2026-07-01 08:52:50
● 2026-07-02 04:17:36
○ 2026-07-02 11:36:10
● 2026-07-02 20:18:00
○ 2026-07-02 22:59:16
○ 2026-08-10 09:52:06

○A13.225.47.282026-05-19 → 2026-07-02 · 18 obs

○A13.225.47.322026-05-19 → 2026-07-02 · 18 obs

○A13.225.47.512026-05-19 → 2026-07-02 · 18 obs

○A13.249.96.1062026-06-21 → 2026-07-28 · 8 obs

○ 2026-06-21 10:37:04
● 2026-06-21 14:54:58
○ 2026-06-21 20:16:58
● 2026-07-27 09:57:02
○ 2026-07-27 12:02:26
● 2026-07-28 17:53:16
○ 2026-07-28 20:02:58
○ 2026-08-10 09:52:06

○A13.249.96.282026-06-21 → 2026-07-28 · 8 obs

○ 2026-06-21 10:37:04
● 2026-06-21 14:54:58
○ 2026-06-21 20:16:58
● 2026-07-27 09:57:02
○ 2026-07-27 12:02:26
● 2026-07-28 17:53:16
○ 2026-07-28 20:02:58
○ 2026-08-10 09:52:06

○A13.249.96.612026-06-21 → 2026-07-28 · 8 obs

○ 2026-06-21 10:37:04
● 2026-06-21 14:54:58
○ 2026-06-21 20:16:58
● 2026-07-27 09:57:02
○ 2026-07-27 12:02:26
● 2026-07-28 17:53:16
○ 2026-07-28 20:02:58
○ 2026-08-10 09:52:06

○A13.249.96.622026-06-21 → 2026-07-28 · 8 obs

○ 2026-06-21 10:37:04
● 2026-06-21 14:54:58
○ 2026-06-21 20:16:58
● 2026-07-27 09:57:02
○ 2026-07-27 12:02:26
● 2026-07-28 17:53:16
○ 2026-07-28 20:02:58
○ 2026-08-10 09:52:06

○A13.32.241.1002026-03-14 → 2026-03-14 · 4 obs

○ 2026-03-10 23:36:36
● 2026-03-14 10:03:50
○ 2026-03-14 13:44:02
○ 2026-08-10 09:52:06

○A13.32.241.182026-03-14 → 2026-03-14 · 4 obs

○ 2026-03-10 23:36:36
● 2026-03-14 10:03:50
○ 2026-03-14 13:44:02
○ 2026-08-10 09:52:06

○A13.32.241.352026-03-14 → 2026-03-14 · 4 obs

○ 2026-03-10 23:36:36
● 2026-03-14 10:03:50
○ 2026-03-14 13:44:02
○ 2026-08-10 09:52:06

○A13.32.241.52026-03-14 → 2026-03-14 · 4 obs

○ 2026-03-10 23:36:36
● 2026-03-14 10:03:50
○ 2026-03-14 13:44:02
○ 2026-08-10 09:52:06

○A13.33.235.1042026-07-11 → 2026-08-09 · 28 obs

○ 2026-07-11 04:09:00
● 2026-07-11 08:18:14
○ 2026-07-11 14:49:58
● 2026-07-11 20:52:52
○ 2026-07-11 23:59:04
● 2026-07-12 23:48:46
○ 2026-07-13 21:22:04
● 2026-07-15 15:14:28
● 2026-07-16 18:26:36
○ 2026-07-17 10:38:16
● 2026-07-19 00:20:40
○ 2026-07-20 16:57:08
● 2026-08-05 12:03:42
● 2026-08-06 20:19:42
○ 2026-08-07 19:45:16
● 2026-08-08 00:18:48
○ 2026-08-08 03:38:22
● 2026-08-08 04:19:34
○ 2026-08-08 08:52:02
● 2026-08-08 12:04:10
○ 2026-08-08 18:35:26
● 2026-08-09 00:09:00
○ 2026-08-09 00:42:40
● 2026-08-09 05:22:04
○ 2026-08-09 06:30:34
● 2026-08-09 16:03:56
○ 2026-08-09 19:29:16
○ 2026-08-10 09:52:06

○A13.33.235.1212026-07-11 → 2026-08-09 · 28 obs

○A13.33.235.172026-07-11 → 2026-08-09 · 28 obs

○A13.33.235.922026-07-11 → 2026-08-09 · 28 obs

○A13.35.107.1052026-07-12 → 2026-08-02 · 19 obs

○ 2026-07-11 23:59:04
● 2026-07-12 18:39:40
○ 2026-07-12 23:48:46
● 2026-07-13 16:55:42
○ 2026-07-13 18:34:20
● 2026-07-15 14:43:22
○ 2026-07-16 18:26:36
● 2026-07-19 03:15:48
● 2026-07-20 14:37:12
○ 2026-07-22 01:52:00
○ 2026-07-25 19:30:16
● 2026-07-27 12:32:34
● 2026-07-30 01:50:36
○ 2026-07-31 16:02:46
● 2026-08-01 23:23:46
○ 2026-08-02 00:02:54
● 2026-08-02 09:31:20
○ 2026-08-02 10:32:44
○ 2026-08-10 09:52:06

○A13.35.107.1162026-07-12 → 2026-08-02 · 19 obs

○A13.35.107.552026-07-12 → 2026-08-02 · 19 obs

○A13.35.107.712026-07-12 → 2026-08-02 · 19 obs

○A13.35.20.1212026-05-27 → 2026-06-05 · 18 obs

○ 2026-05-21 13:16:32
● 2026-05-27 14:33:32
● 2026-05-27 16:17:58
○ 2026-05-27 19:46:56
○ 2026-06-02 01:39:14
● 2026-06-02 02:51:10
● 2026-06-02 10:05:48
○ 2026-06-02 14:07:04
● 2026-06-02 16:52:00
○ 2026-06-02 20:58:32
○ 2026-06-05 08:25:12
● 2026-06-05 12:58:18
● 2026-06-05 16:43:28
○ 2026-06-05 19:48:12
● 2026-06-05 20:59:26
● 2026-06-05 21:33:16
○ 2026-06-05 22:19:10
○ 2026-08-10 09:52:06

○A13.35.20.1252026-05-27 → 2026-06-05 · 18 obs

○A13.35.20.582026-05-27 → 2026-06-05 · 18 obs

○A13.35.20.762026-05-27 → 2026-06-05 · 18 obs

○A13.35.202.1142026-05-28 → 2026-06-01 · 10 obs

○ 2026-05-27 19:46:56
● 2026-05-28 23:36:08
○ 2026-05-29 02:16:22
○ 2026-05-31 07:58:10
● 2026-05-31 08:31:04
○ 2026-05-31 09:17:52
○ 2026-05-31 21:37:32
● 2026-06-01 00:46:30
○ 2026-06-01 03:15:02
○ 2026-08-10 09:52:06

○A13.35.202.1272026-05-28 → 2026-06-01 · 10 obs

○A13.35.202.542026-05-28 → 2026-06-01 · 10 obs

○A13.35.202.792026-05-28 → 2026-06-01 · 10 obs

○A18.154.84.162026-04-07 → 2026-04-07 · 4 obs

○ 2026-03-31 10:34:30
● 2026-04-07 20:37:50
○ 2026-04-08 04:17:54
○ 2026-08-10 09:52:06

○A18.154.84.322026-04-07 → 2026-04-07 · 4 obs

○ 2026-03-31 10:34:30
● 2026-04-07 20:37:50
○ 2026-04-08 04:17:54
○ 2026-08-10 09:52:06

○A18.154.84.442026-04-07 → 2026-04-07 · 4 obs

○ 2026-03-31 10:34:30
● 2026-04-07 20:37:50
○ 2026-04-08 04:17:54
○ 2026-08-10 09:52:06

○A18.154.84.92026-04-07 → 2026-04-07 · 4 obs

○ 2026-03-31 10:34:30
● 2026-04-07 20:37:50
○ 2026-04-08 04:17:54
○ 2026-08-10 09:52:06

●A18.160.41.1102026-02-20 → 2026-08-10 · 23 obs

○ 2026-02-17 16:03:40
● 2026-02-20 03:30:36
● 2026-02-20 09:20:12
○ 2026-02-21 08:34:04
○ 2026-06-17 05:12:10
● 2026-06-20 17:13:10
○ 2026-06-23 18:02:52
● 2026-06-27 08:35:32
○ 2026-06-29 16:27:10
● 2026-07-03 19:48:26
○ 2026-07-05 08:18:54
● 2026-07-10 22:53:06
○ 2026-07-11 04:09:00
● 2026-08-03 06:08:12
● 2026-08-06 01:44:36
○ 2026-08-06 04:03:40
● 2026-08-06 23:30:50
○ 2026-08-07 00:11:22
● 2026-08-08 08:52:02
○ 2026-08-08 09:26:06
● 2026-08-08 18:35:26
○ 2026-08-08 19:25:36
● 2026-08-10 09:52:06

●A18.160.41.1122026-02-20 → 2026-08-10 · 23 obs

●A18.160.41.362026-02-20 → 2026-08-10 · 23 obs

●A18.160.41.452026-02-20 → 2026-08-10 · 23 obs

○A18.165.227.1082026-02-16 → 2026-06-30 · 16 obs

● 2026-02-16 14:02:38
○ 2026-02-17 06:33:50
● 2026-02-17 16:03:40
● 2026-02-23 04:48:26
○ 2026-02-25 01:37:34
○ 2026-03-03 01:07:20
● 2026-03-04 06:42:40
● 2026-05-19 02:20:24
○ 2026-05-19 05:18:42
○ 2026-06-08 08:36:54
● 2026-06-08 10:57:00
● 2026-06-30 08:51:26
○ 2026-06-30 12:18:46
● 2026-06-30 21:49:22
○ 2026-07-01 00:39:30
○ 2026-08-10 09:52:06

○A18.165.227.42026-02-16 → 2026-06-30 · 16 obs

○A18.165.227.412026-02-16 → 2026-06-30 · 16 obs

○A18.165.227.662026-02-16 → 2026-06-30 · 16 obs

○A18.239.183.292026-04-23 → 2026-08-02 · 19 obs

○ 2026-04-17 12:45:42
● 2026-04-23 22:52:38
● 2026-04-24 00:30:52
○ 2026-04-24 08:18:26
○ 2026-04-27 14:20:38
● 2026-04-27 23:03:36
○ 2026-04-28 09:04:32
○ 2026-05-02 21:25:30
● 2026-05-03 01:50:50
○ 2026-05-03 09:44:58
○ 2026-05-07 22:47:12
● 2026-05-08 00:34:16
○ 2026-05-08 13:47:28
○ 2026-05-20 04:12:20
● 2026-05-20 05:56:44
○ 2026-05-20 06:37:10
● 2026-08-02 10:32:44
○ 2026-08-02 12:03:06
○ 2026-08-10 09:52:06

○A18.239.183.332026-04-23 → 2026-08-02 · 19 obs

○A18.239.183.822026-04-23 → 2026-08-02 · 19 obs

○A18.239.183.852026-04-23 → 2026-08-02 · 19 obs

○A18.245.199.1152026-07-25 → 2026-07-29 · 17 obs

○ 2026-07-25 06:24:04
● 2026-07-25 12:15:10
○ 2026-07-25 13:27:56
● 2026-07-25 20:15:58
○ 2026-07-26 02:12:44
● 2026-07-26 08:02:26
● 2026-07-26 12:02:24
○ 2026-07-26 16:13:12
● 2026-07-27 02:57:04
● 2026-07-28 00:17:24
○ 2026-07-28 08:03:30
● 2026-07-28 12:18:04
● 2026-07-28 20:02:58
○ 2026-07-28 20:44:08
● 2026-07-29 04:02:10
○ 2026-07-29 07:04:14
○ 2026-08-10 09:52:06

○A18.245.199.1222026-07-25 → 2026-07-29 · 17 obs

○A18.245.199.332026-07-25 → 2026-07-29 · 17 obs

○A18.245.199.652026-07-25 → 2026-07-29 · 17 obs

○A18.65.48.1062026-07-09 → 2026-07-09 · 4 obs

○ 2026-07-09 09:29:12
● 2026-07-09 13:55:28
○ 2026-07-09 14:35:12
○ 2026-08-10 09:52:06

○A18.65.48.1192026-07-09 → 2026-07-09 · 4 obs

○ 2026-07-09 09:29:12
● 2026-07-09 13:55:28
○ 2026-07-09 14:35:12
○ 2026-08-10 09:52:06

○A18.65.48.1272026-07-09 → 2026-07-09 · 4 obs

○ 2026-07-09 09:29:12
● 2026-07-09 13:55:28
○ 2026-07-09 14:35:12
○ 2026-08-10 09:52:06

○A18.65.48.232026-07-09 → 2026-07-09 · 4 obs

○ 2026-07-09 09:29:12
● 2026-07-09 13:55:28
○ 2026-07-09 14:35:12
○ 2026-08-10 09:52:06

○A3.160.90.1032026-06-13 → 2026-06-13 · 4 obs

○ 2026-06-08 10:57:00
● 2026-06-13 15:47:38
○ 2026-06-13 18:03:32
○ 2026-08-10 09:52:06

○A3.160.90.232026-06-13 → 2026-06-13 · 4 obs

○ 2026-06-08 10:57:00
● 2026-06-13 15:47:38
○ 2026-06-13 18:03:32
○ 2026-08-10 09:52:06

○A3.160.90.362026-06-13 → 2026-06-13 · 4 obs

○ 2026-06-08 10:57:00
● 2026-06-13 15:47:38
○ 2026-06-13 18:03:32
○ 2026-08-10 09:52:06

○A3.160.90.382026-06-13 → 2026-06-13 · 4 obs

○ 2026-06-08 10:57:00
● 2026-06-13 15:47:38
○ 2026-06-13 18:03:32
○ 2026-08-10 09:52:06

○A3.163.125.22026-07-03 → 2026-08-06 · 6 obs

○ 2026-07-02 22:59:16
● 2026-07-03 00:18:02
○ 2026-07-03 00:55:24
● 2026-08-06 12:03:52
○ 2026-08-06 20:19:42
○ 2026-08-10 09:52:06

○A3.163.125.352026-07-03 → 2026-08-06 · 6 obs

○ 2026-07-02 22:59:16
● 2026-07-03 00:18:02
○ 2026-07-03 00:55:24
● 2026-08-06 12:03:52
○ 2026-08-06 20:19:42
○ 2026-08-10 09:52:06

○A3.163.125.772026-07-03 → 2026-08-06 · 6 obs

○ 2026-07-02 22:59:16
● 2026-07-03 00:18:02
○ 2026-07-03 00:55:24
● 2026-08-06 12:03:52
○ 2026-08-06 20:19:42
○ 2026-08-10 09:52:06

○A3.163.125.792026-07-03 → 2026-08-06 · 6 obs

○ 2026-07-02 22:59:16
● 2026-07-03 00:18:02
○ 2026-07-03 00:55:24
● 2026-08-06 12:03:52
○ 2026-08-06 20:19:42
○ 2026-08-10 09:52:06

○A3.164.6.1062026-03-28 → 2026-08-09 · 32 obs

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○A3.164.6.1082026-03-28 → 2026-08-09 · 32 obs

○A3.164.6.1132026-03-28 → 2026-08-09 · 32 obs

○A3.164.6.792026-03-28 → 2026-08-09 · 32 obs

○A3.174.59.1242026-04-11 → 2026-07-27 · 19 obs

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○A52.222.244.382026-02-17 → 2026-08-09 · 22 obs

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○A54.230.79.1012026-03-31 → 2026-07-30 · 18 obs

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🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
app	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...	-
usecore.app	ns-1292.awsdns-33.org, ns-375.awsdns-46.com, ns-648.awsdns-17.net, ns-1760.awsdns-28.co.uk	-

✅ Authoritative Response

Server:205.251.198.224

NS records: ns-1292.awsdns-33.org, ns-375.awsdns-46.com, ns-648.awsdns-17.net, ns-1760.awsdns-28.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for usecore.app (unsigned zone)

⏱️ Timing

Total: 1375ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`18.160.41.45, 18.160.41.36...`
NS	4	`ns-1292.awsdns-33.org, ns-1760.awsdns-28.co.uk...`
SOA	1	`ns-648.awsdns-17.net awsdns-hostmaster.a`

Analysis

Hierarchy

dev.usecore.app is delegated beneath usecore.app.

IP Addresses

usecore.app points to the four IP addresses 18.160.41.36, 18.160.41.45, 18.160.41.110 and 18.160.41.112.

Among the host names that share IP numbers with usecore.app are my.sevcolabs.com, djn3nem8numpn.cloudfront.net, api-rog.asus.com and two others.

Name Servers

The domain usecore.app is delegated to these four name servers: ns-375.awsdns-46.com, ns-648.awsdns-17.net, ns-1292.awsdns-33.org and ns-1760.awsdns-28.co.uk.

There is at least partial name server overlap between usecore.app and other domains — duvar.com.tr, wandafi.net, muniverse.io and two more among them.

These name servers frequently co-occur with the name servers ns-287.awsdns-35.com and ns-847.awsdns-41.net.

All four hostnames — ns-375.awsdns-46.com, ns-648.awsdns-17.net, ns-1292.awsdns-33.org and ns-1760.awsdns-28.co.uk — resolve to two IP numbers apiece: ns-375.awsdns-46.com to 205.251.193.119 and 2600:9000:5301:7700::1; ns-648.awsdns-17.net to 205.251.194.136 and 2600:9000:5302:8800::1; ns-1292.awsdns-33.org to 205.251.197.12 and 2600:9000:5305:c00::1; ns-1760.awsdns-28.co.uk to 205.251.198.224 and 2600:9000:5306:e000::1.