`kongschool.kr`

DNSSEC	⚠️ Not signed
A	18.66.255.5^{🇺🇸 Amazon18.66.255.0/24}
		PTR	`server-18-66-255-5.mia3.r.cloudfront.net`
A	18.66.255.32^{🇺🇸 Amazon18.66.255.0/24}
A	18.66.255.79^{🇺🇸 Amazon18.66.255.0/24}
A	18.66.255.80^{🇺🇸 Amazon18.66.255.0/24}
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=2606090535

Same first word

kongschool.kr

kongschool.com.hk

DNS History

36 records (8 active, 28 former)

●NSans1.hostcocoa.com2026-04-28 → 2026-06-08 · 2 obs

● 2026-04-28 13:47:04
● 2026-06-08 23:11:00

●NSans2.hostcocoa.com2026-04-28 → 2026-06-08 · 2 obs

● 2026-04-28 13:47:04
● 2026-06-08 23:11:00

●NSans3.hostcocoa.com2026-04-28 → 2026-06-08 · 2 obs

● 2026-04-28 13:47:04
● 2026-06-08 23:11:00

●NSans4.hostcocoa.com2026-04-28 → 2026-06-08 · 2 obs

● 2026-04-28 13:47:04
● 2026-06-08 23:11:00

○A13.35.78.362026-05-24 → 2026-05-24 · 4 obs

○ 2026-05-20 01:07:46
● 2026-05-24 07:49:22
○ 2026-05-24 10:02:12
○ 2026-06-08 23:11:00

○A13.35.78.692026-05-24 → 2026-05-24 · 4 obs

○ 2026-05-20 01:07:46
● 2026-05-24 07:49:22
○ 2026-05-24 10:02:12
○ 2026-06-08 23:11:00

○A13.35.78.82026-05-24 → 2026-05-24 · 4 obs

○ 2026-05-20 01:07:46
● 2026-05-24 07:49:22
○ 2026-05-24 10:02:12
○ 2026-06-08 23:11:00

○A13.35.78.952026-05-24 → 2026-05-24 · 4 obs

○ 2026-05-20 01:07:46
● 2026-05-24 07:49:22
○ 2026-05-24 10:02:12
○ 2026-06-08 23:11:00

○A18.161.21.562026-05-07 → 2026-05-08 · 7 obs

○ 2026-05-07 04:06:36
● 2026-05-07 13:42:48
○ 2026-05-07 14:13:42
○ 2026-05-08 15:32:04
● 2026-05-08 20:50:08
○ 2026-05-08 23:43:34
○ 2026-06-08 23:11:00

○A18.161.21.632026-05-07 → 2026-05-08 · 7 obs

○ 2026-05-07 04:06:36
● 2026-05-07 13:42:48
○ 2026-05-07 14:13:42
○ 2026-05-08 15:32:04
● 2026-05-08 20:50:08
○ 2026-05-08 23:43:34
○ 2026-06-08 23:11:00

○A18.161.21.712026-05-07 → 2026-05-08 · 7 obs

○ 2026-05-07 04:06:36
● 2026-05-07 13:42:48
○ 2026-05-07 14:13:42
○ 2026-05-08 15:32:04
● 2026-05-08 20:50:08
○ 2026-05-08 23:43:34
○ 2026-06-08 23:11:00

○A18.161.21.852026-05-07 → 2026-05-08 · 7 obs

○ 2026-05-07 04:06:36
● 2026-05-07 13:42:48
○ 2026-05-07 14:13:42
○ 2026-05-08 15:32:04
● 2026-05-08 20:50:08
○ 2026-05-08 23:43:34
○ 2026-06-08 23:11:00

●A18.66.255.322026-04-28 → 2026-06-08 · 16 obs

● 2026-04-28 13:47:04
● 2026-04-29 10:50:04
○ 2026-04-30 03:55:22
● 2026-05-01 06:37:48
● 2026-05-02 12:52:18
○ 2026-05-03 07:22:38
○ 2026-05-29 09:57:50
● 2026-05-30 03:23:12
○ 2026-05-30 21:59:46
○ 2026-06-05 19:36:36
● 2026-06-06 13:40:02
● 2026-06-08 00:50:32
○ 2026-06-08 08:12:12
○ 2026-06-08 13:51:38
● 2026-06-08 23:10:58
● 2026-06-08 23:11:00

●A18.66.255.52026-04-28 → 2026-06-08 · 16 obs

●A18.66.255.792026-04-28 → 2026-06-08 · 16 obs

●A18.66.255.802026-04-28 → 2026-06-08 · 16 obs

○A18.67.0.1172026-05-08 → 2026-05-08 · 4 obs

○ 2026-05-07 14:13:42
● 2026-05-08 15:32:04
○ 2026-05-08 20:50:08
○ 2026-06-08 23:11:00

○A18.67.0.1232026-05-08 → 2026-05-08 · 4 obs

○ 2026-05-07 14:13:42
● 2026-05-08 15:32:04
○ 2026-05-08 20:50:08
○ 2026-06-08 23:11:00

○A18.67.0.22026-05-08 → 2026-05-08 · 4 obs

○ 2026-05-07 14:13:42
● 2026-05-08 15:32:04
○ 2026-05-08 20:50:08
○ 2026-06-08 23:11:00

○A18.67.0.62026-05-08 → 2026-05-08 · 4 obs

○ 2026-05-07 14:13:42
● 2026-05-08 15:32:04
○ 2026-05-08 20:50:08
○ 2026-06-08 23:11:00

○A3.171.171.1132026-05-07 → 2026-05-07 · 4 obs

○ 2026-05-03 07:22:38
● 2026-05-07 04:06:36
○ 2026-05-07 13:42:48
○ 2026-06-08 23:11:00

○A3.171.171.1202026-05-07 → 2026-05-07 · 4 obs

○ 2026-05-03 07:22:38
● 2026-05-07 04:06:36
○ 2026-05-07 13:42:48
○ 2026-06-08 23:11:00

○A3.171.171.482026-05-07 → 2026-05-07 · 4 obs

○ 2026-05-03 07:22:38
● 2026-05-07 04:06:36
○ 2026-05-07 13:42:48
○ 2026-06-08 23:11:00

○A3.171.171.762026-05-07 → 2026-05-07 · 4 obs

○ 2026-05-03 07:22:38
● 2026-05-07 04:06:36
○ 2026-05-07 13:42:48
○ 2026-06-08 23:11:00

○A3.171.22.1212026-05-19 → 2026-06-05 · 13 obs

○ 2026-05-08 23:43:34
● 2026-05-19 12:15:02
● 2026-05-20 01:07:46
○ 2026-05-24 07:49:22
● 2026-05-24 10:02:12
○ 2026-05-28 07:05:06
● 2026-05-28 07:51:16
○ 2026-05-29 09:57:50
○ 2026-05-30 03:23:12
● 2026-05-30 21:59:46
● 2026-06-05 19:36:36
○ 2026-06-06 13:40:02
○ 2026-06-08 23:11:00

○A3.171.22.202026-05-19 → 2026-06-05 · 13 obs

○A3.171.22.342026-05-19 → 2026-06-05 · 13 obs

○A3.171.22.782026-05-19 → 2026-06-05 · 13 obs

○A52.84.118.622026-04-30 → 2026-06-08 · 17 obs

○ 2026-04-29 10:50:04
● 2026-04-30 03:55:22
○ 2026-05-01 06:37:48
○ 2026-05-02 12:52:18
● 2026-05-03 07:22:38
○ 2026-05-07 04:06:36
○ 2026-05-07 13:42:48
● 2026-05-07 14:13:42
○ 2026-05-08 15:32:04
○ 2026-05-08 20:50:08
● 2026-05-08 23:43:34
○ 2026-05-19 12:15:02
○ 2026-06-08 00:50:32
● 2026-06-08 08:12:12
● 2026-06-08 13:51:38
○ 2026-06-08 23:10:58
○ 2026-06-08 23:11:00

○A52.84.118.732026-04-30 → 2026-06-08 · 17 obs

○A52.84.118.792026-04-30 → 2026-06-08 · 17 obs

○A52.84.118.872026-04-30 → 2026-06-08 · 17 obs

○A54.192.151.182026-05-28 → 2026-05-29 · 6 obs

○ 2026-05-24 10:02:12
● 2026-05-28 07:05:06
○ 2026-05-28 07:51:16
● 2026-05-29 09:57:50
○ 2026-05-30 03:23:12
○ 2026-06-08 23:11:00

○A54.192.151.442026-05-28 → 2026-05-29 · 6 obs

○ 2026-05-24 10:02:12
● 2026-05-28 07:05:06
○ 2026-05-28 07:51:16
● 2026-05-29 09:57:50
○ 2026-05-30 03:23:12
○ 2026-06-08 23:11:00

○A54.192.151.602026-05-28 → 2026-05-29 · 6 obs

○ 2026-05-24 10:02:12
● 2026-05-28 07:05:06
○ 2026-05-28 07:51:16
● 2026-05-29 09:57:50
○ 2026-05-30 03:23:12
○ 2026-06-08 23:11:00

○A54.192.151.712026-05-28 → 2026-05-29 · 6 obs

○ 2026-05-24 10:02:12
● 2026-05-28 07:05:06
○ 2026-05-28 07:51:16
● 2026-05-29 09:57:50
○ 2026-05-30 03:23:12
○ 2026-06-08 23:11:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
kr	f.dns.kr, b.dns.kr, c.dns.kr, d.dns.kr...	-
kongschool.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 kongschool.kr (unsigned zone)

⏱️ Timing

Total: 2600ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`18.66.255.32, 18.66.255.5...`
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

With 4 IP addresses, kongschool.kr directs to 18.66.255.5, 18.66.255.32, 18.66.255.79 and 18.66.255.80.

Name Servers

kongschool.kr is served by 4 authoritative name servers: ans1.hostcocoa.com, ans2.hostcocoa.com, ans3.hostcocoa.com and ans4.hostcocoa.com.

At least some of kongschool.kr's name servers are shared with other domains, for example unixlaborlaw.co.kr, xn--hy1bk0emujqogqzb.com, bridgestonemc.co.kr and two more.

ans1.hostcocoa.com resolves to 205.251.192.117. ans2.hostcocoa.com resolves to 205.251.195.46. ans3.hostcocoa.com resolves to 205.251.197.133. ans4.hostcocoa.com resolves to 205.251.198.221. All four hosts carry exactly one IP address.

kongschool.kr - robtex.com

kongschool.kr

kr

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`kongschool.kr`

`kr`