isyb.kr - dns.ninja

`isyb.kr`

DNSSEC	⚠️ Not signed
A	13.35.107.7^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}
		PTR	`server-13-35-107-7.phl51.r.cloudfront.net`
A	13.35.107.40^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}
A	13.35.107.119^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}
A	13.35.107.121^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}
NS	`ans1.hostcocoa.com` ⭐
		A	205.251.192.117^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-117.awsdns-14.com`
NS	`ans2.hostcocoa.com`
		A	205.251.195.46^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-814.awsdns-37.net`
NS	`ans3.hostcocoa.com`
		A	205.251.197.133^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1413.awsdns-48.org`
NS	`ans4.hostcocoa.com`
		A	205.251.198.221^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1757.awsdns-27.co.uk`
TXT	`v=spf1 ip4:52.79.92.223 ~all`
SOA	`ans1.hostcocoa.com`awsdns-hostmaster@amazon.com serial=1

`kr`

	DNSSEC	🔒 Signed (DS record present)
	NS	`g.dns.kr` ⭐
	NS	`b.dns.kr`
	NS	`c.dns.kr`
	NS	`d.dns.kr`
	NS	`e.dns.kr`
	NS	`f.dns.kr`
	SOA	`g.dns.kr`domain-manager@nic.or.kr serial=2607310776

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DNS History

44 records (8 active, 36 former)

●NSans1.hostcocoa.com2026-06-25 → 2026-07-31 · 2 obs

● 2026-06-25 01:44:18
● 2026-07-31 10:21:30

●NSans2.hostcocoa.com2026-06-25 → 2026-07-31 · 2 obs

● 2026-06-25 01:44:18
● 2026-07-31 10:21:30

●NSans3.hostcocoa.com2026-06-25 → 2026-07-31 · 2 obs

● 2026-06-25 01:44:18
● 2026-07-31 10:21:30

●NSans4.hostcocoa.com2026-06-25 → 2026-07-31 · 2 obs

● 2026-06-25 01:44:18
● 2026-07-31 10:21:30

●A13.35.107.1192026-07-16 → 2026-07-31 · 137 obs

○ 2026-07-16 11:53:44
● 2026-07-16 15:46:24
○ 2026-07-16 16:36:10
● 2026-07-16 17:06:28
○ 2026-07-17 02:33:18
● 2026-07-17 04:03:56
○ 2026-07-17 06:44:56
● 2026-07-17 07:17:28
○ 2026-07-17 15:48:56
● 2026-07-17 16:27:30
○ 2026-07-17 23:27:18
● 2026-07-18 02:57:26
○ 2026-07-18 09:36:28
● 2026-07-18 11:03:24
○ 2026-07-18 12:10:08
● 2026-07-18 13:23:14
○ 2026-07-18 14:20:28
● 2026-07-18 16:53:18
○ 2026-07-18 18:12:12
● 2026-07-18 19:13:20
○ 2026-07-18 19:52:06
● 2026-07-18 23:50:56
○ 2026-07-19 03:59:10
● 2026-07-19 05:16:48
○ 2026-07-19 07:04:06
● 2026-07-19 07:36:46
○ 2026-07-19 10:32:48
● 2026-07-19 12:04:50
○ 2026-07-20 00:08:38
● 2026-07-20 01:35:26
○ 2026-07-20 03:20:32
● 2026-07-20 03:54:58
○ 2026-07-20 05:58:32
● 2026-07-20 07:24:26
○ 2026-07-20 12:59:12
● 2026-07-20 14:24:28
○ 2026-07-20 17:30:18
● 2026-07-20 19:02:20
○ 2026-07-21 08:11:46
● 2026-07-21 09:34:06
○ 2026-07-21 12:51:56
● 2026-07-21 14:14:12
○ 2026-07-21 16:56:36
● 2026-07-21 17:38:36
○ 2026-07-21 20:25:08
● 2026-07-21 21:04:06
○ 2026-07-22 00:08:50
● 2026-07-22 01:36:52
○ 2026-07-22 09:23:10
● 2026-07-22 11:45:08
○ 2026-07-23 05:51:36
● 2026-07-23 08:15:38
○ 2026-07-23 13:40:16
● 2026-07-23 16:24:34
○ 2026-07-23 20:52:14
● 2026-07-23 22:14:18
○ 2026-07-23 22:48:28
● 2026-07-23 23:24:40
○ 2026-07-24 03:30:54
● 2026-07-24 04:04:30
○ 2026-07-24 05:03:02
● 2026-07-24 06:24:26
○ 2026-07-24 13:45:26
● 2026-07-24 14:33:08
○ 2026-07-24 16:19:02
● 2026-07-24 16:52:42
○ 2026-07-24 17:54:26
● 2026-07-24 19:12:46
○ 2026-07-24 20:13:52
● 2026-07-24 21:32:54
○ 2026-07-24 22:40:18
● 2026-07-24 23:53:00
○ 2026-07-25 01:40:50
● 2026-07-25 02:12:50
○ 2026-07-25 03:21:56
● 2026-07-25 04:33:16
○ 2026-07-25 06:33:22
● 2026-07-25 08:01:26
○ 2026-07-25 16:54:20
● 2026-07-25 19:41:00
○ 2026-07-26 00:15:12
● 2026-07-26 01:31:12
○ 2026-07-26 05:35:50
● 2026-07-26 06:10:10
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● 2026-07-26 09:40:00
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● 2026-07-26 14:20:04
○ 2026-07-26 21:53:56
● 2026-07-26 23:40:22
○ 2026-07-27 01:25:38
● 2026-07-27 03:10:22
○ 2026-07-27 09:05:36
● 2026-07-27 12:30:36
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● 2026-07-27 15:57:08
○ 2026-07-28 00:43:48
● 2026-07-28 01:15:04
○ 2026-07-28 03:05:44
● 2026-07-28 04:45:04
○ 2026-07-28 05:35:58
● 2026-07-28 08:15:04
○ 2026-07-28 15:34:48
● 2026-07-28 16:25:30
○ 2026-07-28 18:09:24
● 2026-07-28 18:40:54
○ 2026-07-28 20:50:02
● 2026-07-28 22:15:34
○ 2026-07-29 03:31:56
● 2026-07-29 04:03:56
○ 2026-07-29 06:13:12
● 2026-07-29 07:34:08
○ 2026-07-29 10:16:18
● 2026-07-29 11:04:28
○ 2026-07-29 18:24:06
● 2026-07-29 21:12:40
○ 2026-07-30 00:03:22
● 2026-07-30 00:37:34
○ 2026-07-30 04:45:38
● 2026-07-30 06:09:32
○ 2026-07-30 07:32:02
● 2026-07-30 08:22:06
○ 2026-07-30 10:09:10
● 2026-07-30 11:40:50
○ 2026-07-30 14:35:40
● 2026-07-30 16:15:08
○ 2026-07-30 17:14:46
● 2026-07-30 18:30:08
○ 2026-07-30 21:49:06
● 2026-07-31 00:20:32
○ 2026-07-31 03:07:48
● 2026-07-31 03:50:28
○ 2026-07-31 04:23:00
● 2026-07-31 05:00:38
○ 2026-07-31 07:59:24
● 2026-07-31 08:30:32
● 2026-07-31 10:21:30

●A13.35.107.1212026-07-16 → 2026-07-31 · 137 obs

●A13.35.107.402026-07-16 → 2026-07-31 · 137 obs

●A13.35.107.72026-07-16 → 2026-07-31 · 137 obs

○A18.160.46.112026-06-25 → 2026-07-10 · 11 obs

● 2026-06-25 01:44:18
○ 2026-06-26 11:33:38
● 2026-06-27 06:01:36
○ 2026-06-27 11:13:30
● 2026-06-27 15:38:20
○ 2026-06-30 21:53:46
● 2026-07-03 11:36:08
○ 2026-07-03 12:53:52
● 2026-07-10 00:36:20
○ 2026-07-13 14:42:44
○ 2026-07-31 10:21:30

○A18.160.46.1272026-06-25 → 2026-07-10 · 11 obs

○A18.160.46.962026-06-25 → 2026-07-10 · 11 obs

○A18.160.46.992026-06-25 → 2026-07-10 · 11 obs

○A18.172.122.1002026-07-02 → 2026-07-02 · 4 obs

○ 2026-06-30 21:53:46
● 2026-07-02 02:17:12
○ 2026-07-03 11:36:08
○ 2026-07-31 10:21:30

○A18.172.122.1112026-07-02 → 2026-07-02 · 4 obs

○ 2026-06-30 21:53:46
● 2026-07-02 02:17:12
○ 2026-07-03 11:36:08
○ 2026-07-31 10:21:30

○A18.172.122.1292026-07-02 → 2026-07-02 · 4 obs

○ 2026-06-30 21:53:46
● 2026-07-02 02:17:12
○ 2026-07-03 11:36:08
○ 2026-07-31 10:21:30

○A18.172.122.422026-07-02 → 2026-07-02 · 4 obs

○ 2026-06-30 21:53:46
● 2026-07-02 02:17:12
○ 2026-07-03 11:36:08
○ 2026-07-31 10:21:30

○A18.64.174.1182026-06-30 → 2026-07-31 · 110 obs

○ 2026-06-27 15:38:20
● 2026-06-30 21:53:46
○ 2026-07-02 02:17:12
● 2026-07-07 15:38:46
○ 2026-07-07 21:52:38
● 2026-07-08 11:44:52
○ 2026-07-08 17:52:16
● 2026-07-13 14:42:44
○ 2026-07-13 19:42:42
● 2026-07-14 07:52:12
○ 2026-07-14 15:51:22
● 2026-07-15 06:29:40
○ 2026-07-16 10:03:50
● 2026-07-16 11:53:44
○ 2026-07-16 15:46:24
● 2026-07-16 16:36:10
○ 2026-07-16 17:06:28
● 2026-07-17 02:33:18
○ 2026-07-17 04:03:56
● 2026-07-17 06:44:56
○ 2026-07-17 07:17:28
● 2026-07-17 15:48:56
○ 2026-07-17 16:27:30
● 2026-07-18 00:31:30
○ 2026-07-18 02:57:26
● 2026-07-18 09:36:28
○ 2026-07-18 11:03:24
● 2026-07-18 12:10:08
○ 2026-07-18 13:23:14
● 2026-07-18 18:12:12
○ 2026-07-18 19:13:20
● 2026-07-18 19:52:06
○ 2026-07-18 23:50:56
● 2026-07-19 03:59:10
○ 2026-07-19 05:16:48
● 2026-07-19 10:32:48
○ 2026-07-19 12:04:50
● 2026-07-20 00:08:38
○ 2026-07-20 01:35:26
● 2026-07-20 03:20:32
○ 2026-07-20 03:54:58
● 2026-07-20 05:58:32
○ 2026-07-20 07:24:26
● 2026-07-20 12:59:12
○ 2026-07-20 14:24:28
● 2026-07-20 17:30:18
○ 2026-07-20 18:20:54
● 2026-07-21 08:11:46
○ 2026-07-21 09:34:06
● 2026-07-21 12:51:56
○ 2026-07-21 14:14:12
● 2026-07-21 16:56:36
○ 2026-07-21 17:38:36
● 2026-07-22 00:08:50
○ 2026-07-22 01:36:52
● 2026-07-22 09:23:10
○ 2026-07-22 10:29:00
● 2026-07-23 05:51:36
○ 2026-07-23 08:15:38
● 2026-07-23 13:40:16
○ 2026-07-23 14:49:38
● 2026-07-23 15:54:02
○ 2026-07-23 16:24:34
● 2026-07-23 20:52:14
○ 2026-07-23 22:14:18
● 2026-07-23 22:48:28
○ 2026-07-23 23:24:40
● 2026-07-24 03:30:54
○ 2026-07-24 04:04:30
● 2026-07-24 05:03:02
○ 2026-07-24 06:24:26
● 2026-07-24 13:45:26
○ 2026-07-24 14:33:08
● 2026-07-24 16:19:02
○ 2026-07-24 16:52:42
● 2026-07-24 22:40:18
○ 2026-07-24 23:53:00
● 2026-07-25 03:21:56
○ 2026-07-25 04:33:16
● 2026-07-25 06:33:22
○ 2026-07-25 08:01:26
● 2026-07-25 16:54:20
○ 2026-07-25 19:41:00
● 2026-07-26 00:15:12
○ 2026-07-26 01:31:12
● 2026-07-26 05:35:50
○ 2026-07-26 06:10:10
● 2026-07-26 08:40:46
○ 2026-07-26 09:40:00
● 2026-07-26 12:58:58
○ 2026-07-26 14:20:04
● 2026-07-27 01:25:38
○ 2026-07-27 03:10:22
● 2026-07-27 09:05:36
○ 2026-07-27 11:57:14
● 2026-07-27 14:29:04
○ 2026-07-27 15:57:08
● 2026-07-28 00:43:48
○ 2026-07-28 01:15:04
● 2026-07-28 03:05:44
○ 2026-07-28 04:45:04
● 2026-07-28 05:35:58
○ 2026-07-28 06:51:12
● 2026-07-28 15:34:48
○ 2026-07-28 16:25:30
● 2026-07-30 21:49:06
○ 2026-07-31 00:20:32
● 2026-07-31 03:07:48
○ 2026-07-31 03:50:28
○ 2026-07-31 10:21:30

○A18.64.174.342026-06-30 → 2026-07-31 · 110 obs

○A18.64.174.542026-06-30 → 2026-07-31 · 110 obs

○A18.64.174.842026-06-30 → 2026-07-31 · 110 obs

○A216.137.53.1062026-06-26 → 2026-06-26 · 4 obs

○ 2026-06-25 01:44:18
● 2026-06-26 11:33:38
○ 2026-06-27 06:01:36
○ 2026-07-31 10:21:30

○A216.137.53.1102026-06-26 → 2026-06-26 · 4 obs

○ 2026-06-25 01:44:18
● 2026-06-26 11:33:38
○ 2026-06-27 06:01:36
○ 2026-07-31 10:21:30

○A216.137.53.1272026-06-26 → 2026-06-26 · 4 obs

○ 2026-06-25 01:44:18
● 2026-06-26 11:33:38
○ 2026-06-27 06:01:36
○ 2026-07-31 10:21:30

○A216.137.53.672026-06-26 → 2026-06-26 · 4 obs

○ 2026-06-25 01:44:18
● 2026-06-26 11:33:38
○ 2026-06-27 06:01:36
○ 2026-07-31 10:21:30

○A52.222.169.1152026-07-26 → 2026-07-26 · 6 obs

○ 2026-07-26 06:10:10
● 2026-07-26 08:01:52
○ 2026-07-26 08:40:46
● 2026-07-26 23:00:58
○ 2026-07-26 23:40:22
○ 2026-07-31 10:21:30

○A52.222.169.52026-07-26 → 2026-07-26 · 6 obs

○ 2026-07-26 06:10:10
● 2026-07-26 08:01:52
○ 2026-07-26 08:40:46
● 2026-07-26 23:00:58
○ 2026-07-26 23:40:22
○ 2026-07-31 10:21:30

○A52.222.169.572026-07-26 → 2026-07-26 · 6 obs

○ 2026-07-26 06:10:10
● 2026-07-26 08:01:52
○ 2026-07-26 08:40:46
● 2026-07-26 23:00:58
○ 2026-07-26 23:40:22
○ 2026-07-31 10:21:30

○A52.222.169.992026-07-26 → 2026-07-26 · 6 obs

○ 2026-07-26 06:10:10
● 2026-07-26 08:01:52
○ 2026-07-26 08:40:46
● 2026-07-26 23:00:58
○ 2026-07-26 23:40:22
○ 2026-07-31 10:21:30

○A52.85.154.1142026-07-13 → 2026-07-19 · 10 obs

○ 2026-07-13 14:42:44
● 2026-07-13 19:42:42
○ 2026-07-14 07:52:12
● 2026-07-14 15:51:22
○ 2026-07-15 06:29:40
● 2026-07-16 10:03:50
○ 2026-07-16 11:53:44
● 2026-07-19 07:04:06
○ 2026-07-19 07:36:46
○ 2026-07-31 10:21:30

○A52.85.154.152026-07-13 → 2026-07-19 · 10 obs

○A52.85.154.42026-07-13 → 2026-07-19 · 10 obs

○A52.85.154.922026-07-13 → 2026-07-19 · 10 obs

○A54.230.253.102026-06-27 → 2026-07-30 · 34 obs

○ 2026-06-27 06:01:36
● 2026-06-27 11:13:30
○ 2026-06-27 15:38:20
● 2026-07-26 21:53:56
○ 2026-07-26 23:00:58
● 2026-07-27 11:57:14
○ 2026-07-27 12:30:36
● 2026-07-28 06:51:12
○ 2026-07-28 08:15:04
● 2026-07-28 18:09:24
○ 2026-07-28 18:40:54
● 2026-07-28 20:50:02
○ 2026-07-28 22:15:34
● 2026-07-29 03:31:56
○ 2026-07-29 04:03:56
● 2026-07-29 06:13:12
○ 2026-07-29 07:34:08
● 2026-07-29 10:16:18
○ 2026-07-29 11:04:28
● 2026-07-29 18:24:06
○ 2026-07-29 21:12:40
● 2026-07-30 00:03:22
○ 2026-07-30 00:37:34
● 2026-07-30 04:45:38
○ 2026-07-30 06:09:32
● 2026-07-30 07:32:02
○ 2026-07-30 08:22:06
● 2026-07-30 10:09:10
○ 2026-07-30 11:40:50
● 2026-07-30 14:35:40
○ 2026-07-30 16:15:08
● 2026-07-30 17:14:46
○ 2026-07-30 18:30:08
○ 2026-07-31 10:21:30

○A54.230.253.1092026-06-27 → 2026-07-30 · 34 obs

○A54.230.253.332026-06-27 → 2026-07-30 · 34 obs

○A54.230.253.422026-06-27 → 2026-07-30 · 34 obs

○A65.8.20.1002026-07-07 → 2026-07-07 · 4 obs

○ 2026-07-07 15:38:46
● 2026-07-07 21:52:38
○ 2026-07-08 11:44:52
○ 2026-07-31 10:21:30

○A65.8.20.182026-07-07 → 2026-07-07 · 4 obs

○ 2026-07-07 15:38:46
● 2026-07-07 21:52:38
○ 2026-07-08 11:44:52
○ 2026-07-31 10:21:30

○A65.8.20.442026-07-07 → 2026-07-07 · 4 obs

○ 2026-07-07 15:38:46
● 2026-07-07 21:52:38
○ 2026-07-08 11:44:52
○ 2026-07-31 10:21:30

○A65.8.20.762026-07-07 → 2026-07-07 · 4 obs

○ 2026-07-07 15:38:46
● 2026-07-07 21:52:38
○ 2026-07-08 11:44:52
○ 2026-07-31 10:21:30

○A99.84.215.282026-07-03 → 2026-07-31 · 24 obs

○ 2026-07-03 11:36:08
● 2026-07-03 12:53:52
○ 2026-07-07 15:38:46
● 2026-07-08 17:52:16
○ 2026-07-10 00:36:20
● 2026-07-20 18:20:54
○ 2026-07-20 19:02:20
● 2026-07-21 20:25:08
○ 2026-07-21 21:04:06
● 2026-07-22 10:29:00
○ 2026-07-22 11:45:08
● 2026-07-23 14:49:38
○ 2026-07-23 15:54:02
● 2026-07-24 17:54:26
○ 2026-07-24 19:12:46
● 2026-07-24 20:13:52
○ 2026-07-24 21:32:54
● 2026-07-25 01:40:50
○ 2026-07-25 02:12:50
● 2026-07-31 04:23:00
○ 2026-07-31 05:00:38
● 2026-07-31 07:59:24
○ 2026-07-31 08:30:32
○ 2026-07-31 10:21:30

○A99.84.215.302026-07-03 → 2026-07-31 · 24 obs

○A99.84.215.442026-07-03 → 2026-07-31 · 24 obs

○A99.84.215.962026-07-03 → 2026-07-31 · 24 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
kr	c.dns.kr, f.dns.kr, g.dns.kr, b.dns.kr...	-
isyb.kr	ans3.hostcocoa.com, ans4.hostcocoa.com, ans1.hostcocoa.com, ans2.hostcocoa.com	-

✅ Authoritative Response

Server:205.251.197.133

NS records: ans3.hostcocoa.com, ans4.hostcocoa.com, ans1.hostcocoa.com, ans2.hostcocoa.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for isyb.kr (unsigned zone)

⏱️ Timing

Total: 1963ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`13.35.107.7, 13.35.107.40...`
NS	4	`ans1.hostcocoa.com, ans2.hostcocoa.com...`
TXT	1	`v=spf1 ip4:52.79.92.223 ~all`
SOA	1	`ans1.hostcocoa.com awsdns-hostmaster.ama`

Analysis

IP Addresses

isyb.kr points to the four IP addresses 13.35.107.7, 13.35.107.40, 13.35.107.119 and 13.35.107.121.

Two other host names, along with bee-happy.club, all-in-one-status-sa-4.flycricket.io and learntodriveaberdeen.com, also share IP numbers with isyb.kr.

Name Servers

The NS records for isyb.kr point to four name servers: ans1.hostcocoa.com, ans2.hostcocoa.com, ans3.hostcocoa.com and ans4.hostcocoa.com.

The name servers of isyb.kr overlap at least partially with those of other domains — among them gaboknam.com, minamcompany.com, k-percussion.com and two more.

The hosts ans1.hostcocoa.com, ans2.hostcocoa.com, ans3.hostcocoa.com and ans4.hostcocoa.com all resolve to exactly one IP address each: 205.251.192.117, 205.251.195.46, 205.251.197.133 and 205.251.198.221 respectively.