`efree-lab.kr`

DNSSEC	⚠️ Not signed
A	99.84.234.9^{🇺🇸 Amazon99.84.232.0/22}
		PTR	`server-99-84-234-9.jfk50.r.cloudfront.net`
A	99.84.234.37^{🇺🇸 Amazon99.84.232.0/22}
A	99.84.234.40^{🇺🇸 Amazon99.84.232.0/22}
A	99.84.234.97^{🇺🇸 Amazon99.84.232.0/22}
NS	`cns1.hostcocoa.com` ⭐
		A	205.251.196.138^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1162.awsdns-17.org`
NS	`cns2.hostcocoa.com`
		A	205.251.194.81^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-593.awsdns-10.net`
NS	`cns3.hostcocoa.com`
		A	205.251.193.7^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-263.awsdns-32.com`
NS	`cns4.hostcocoa.com`
		A	205.251.199.181^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1973.awsdns-54.co.uk`
SOA	`cns1.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=2604050788

Same first word

efree-lab.kr

DNS History

32 records (8 active, 24 former)

●NScns1.hostcocoa.com2026-03-27 → 2026-04-05 · 2 obs

● 2026-03-27 15:02:24
● 2026-04-05 17:21:04

●NScns2.hostcocoa.com2026-03-27 → 2026-04-05 · 2 obs

● 2026-03-27 15:02:24
● 2026-04-05 17:21:04

●NScns3.hostcocoa.com2026-03-27 → 2026-04-05 · 2 obs

● 2026-03-27 15:02:24
● 2026-04-05 17:21:04

●NScns4.hostcocoa.com2026-03-27 → 2026-04-05 · 2 obs

● 2026-03-27 15:02:24
● 2026-04-05 17:21:04

○A108.157.173.1272026-03-31 → 2026-03-31 · 7 obs

○ 2026-03-31 05:51:18
● 2026-03-31 07:11:12
● 2026-03-31 10:32:28
○ 2026-03-31 11:02:46
● 2026-03-31 11:53:22
○ 2026-03-31 12:42:18
○ 2026-04-05 17:21:04

○A108.157.173.142026-03-31 → 2026-03-31 · 7 obs

○ 2026-03-31 05:51:18
● 2026-03-31 07:11:12
● 2026-03-31 10:32:28
○ 2026-03-31 11:02:46
● 2026-03-31 11:53:22
○ 2026-03-31 12:42:18
○ 2026-04-05 17:21:04

○A108.157.173.462026-03-31 → 2026-03-31 · 7 obs

○ 2026-03-31 05:51:18
● 2026-03-31 07:11:12
● 2026-03-31 10:32:28
○ 2026-03-31 11:02:46
● 2026-03-31 11:53:22
○ 2026-03-31 12:42:18
○ 2026-04-05 17:21:04

○A108.157.173.732026-03-31 → 2026-03-31 · 7 obs

○ 2026-03-31 05:51:18
● 2026-03-31 07:11:12
● 2026-03-31 10:32:28
○ 2026-03-31 11:02:46
● 2026-03-31 11:53:22
○ 2026-03-31 12:42:18
○ 2026-04-05 17:21:04

○A13.33.235.1212026-03-27 → 2026-03-27 · 3 obs

● 2026-03-27 15:02:24
○ 2026-03-27 20:06:06
○ 2026-04-05 17:21:04

○A13.33.235.1242026-03-27 → 2026-03-27 · 3 obs

● 2026-03-27 15:02:24
○ 2026-03-27 20:06:06
○ 2026-04-05 17:21:04

○A13.33.235.1272026-03-27 → 2026-03-27 · 3 obs

● 2026-03-27 15:02:24
○ 2026-03-27 20:06:06
○ 2026-04-05 17:21:04

○A13.33.235.742026-03-27 → 2026-03-27 · 3 obs

● 2026-03-27 15:02:24
○ 2026-03-27 20:06:06
○ 2026-04-05 17:21:04

○A3.166.160.212026-03-28 → 2026-03-29 · 8 obs

○ 2026-03-28 09:11:22
● 2026-03-28 15:03:22
○ 2026-03-29 00:49:36
○ 2026-03-29 19:06:48
● 2026-03-29 19:45:42
● 2026-03-29 20:47:08
○ 2026-03-29 21:45:50
○ 2026-04-05 17:21:04

○A3.166.160.362026-03-28 → 2026-03-29 · 8 obs

○ 2026-03-28 09:11:22
● 2026-03-28 15:03:22
○ 2026-03-29 00:49:36
○ 2026-03-29 19:06:48
● 2026-03-29 19:45:42
● 2026-03-29 20:47:08
○ 2026-03-29 21:45:50
○ 2026-04-05 17:21:04

○A3.166.160.502026-03-28 → 2026-03-29 · 8 obs

○ 2026-03-28 09:11:22
● 2026-03-28 15:03:22
○ 2026-03-29 00:49:36
○ 2026-03-29 19:06:48
● 2026-03-29 19:45:42
● 2026-03-29 20:47:08
○ 2026-03-29 21:45:50
○ 2026-04-05 17:21:04

○A3.166.160.82026-03-28 → 2026-03-29 · 8 obs

○ 2026-03-28 09:11:22
● 2026-03-28 15:03:22
○ 2026-03-29 00:49:36
○ 2026-03-29 19:06:48
● 2026-03-29 19:45:42
● 2026-03-29 20:47:08
○ 2026-03-29 21:45:50
○ 2026-04-05 17:21:04

○A3.170.3.392026-03-27 → 2026-04-01 · 12 obs

○ 2026-03-27 15:02:24
● 2026-03-27 20:06:06
○ 2026-03-27 23:33:18
● 2026-03-28 00:13:46
○ 2026-03-28 01:25:46
○ 2026-03-29 17:14:08
● 2026-03-29 19:06:48
○ 2026-03-29 19:45:42
○ 2026-04-01 15:47:18
● 2026-04-01 17:27:18
○ 2026-04-01 20:17:52
○ 2026-04-05 17:21:04

○A3.170.3.472026-03-27 → 2026-04-01 · 12 obs

○A3.170.3.722026-03-27 → 2026-04-01 · 12 obs

○A3.170.3.852026-03-27 → 2026-04-01 · 12 obs

○A52.222.177.102026-03-27 → 2026-04-05 · 54 obs

○ 2026-03-27 20:06:06
● 2026-03-27 23:33:18
○ 2026-03-28 00:13:46
● 2026-03-28 01:25:46
● 2026-03-28 09:11:22
○ 2026-03-28 15:03:22
● 2026-03-29 00:49:36
● 2026-03-29 15:05:36
○ 2026-03-29 15:51:00
● 2026-03-29 17:14:08
○ 2026-03-29 19:06:48
○ 2026-03-29 20:47:08
● 2026-03-29 21:45:50
● 2026-03-29 23:22:24
○ 2026-03-30 00:13:40
● 2026-03-30 02:01:26
● 2026-03-30 02:37:22
○ 2026-03-30 03:41:22
● 2026-03-30 07:31:50
● 2026-03-31 05:51:18
○ 2026-03-31 07:11:12
○ 2026-03-31 10:32:28
● 2026-03-31 11:02:46
○ 2026-03-31 11:53:22
● 2026-03-31 12:42:18
● 2026-03-31 15:48:52
○ 2026-03-31 18:19:54
● 2026-03-31 21:46:26
○ 2026-04-01 00:12:48
● 2026-04-01 00:52:26
● 2026-04-01 01:28:34
○ 2026-04-01 03:23:58
● 2026-04-01 04:01:28
● 2026-04-01 15:47:18
○ 2026-04-01 17:27:18
● 2026-04-01 20:17:52
○ 2026-04-01 23:20:58
● 2026-04-02 03:08:46
● 2026-04-02 06:05:32
○ 2026-04-02 11:49:06
● 2026-04-02 18:42:44
● 2026-04-02 22:11:30
○ 2026-04-02 23:54:02
● 2026-04-03 01:32:22
● 2026-04-03 08:26:10
○ 2026-04-04 00:14:02
○ 2026-04-04 01:03:20
● 2026-04-04 03:03:48
● 2026-04-05 03:32:50
○ 2026-04-05 06:42:10
○ 2026-04-05 08:30:58
● 2026-04-05 13:01:58
● 2026-04-05 15:13:56
○ 2026-04-05 17:21:04

○A52.222.177.1212026-03-27 → 2026-04-05 · 54 obs

○A52.222.177.242026-03-27 → 2026-04-05 · 54 obs

○A52.222.177.342026-03-27 → 2026-04-05 · 54 obs

●A99.84.234.372026-03-29 → 2026-04-05 · 11 obs

○ 2026-03-29 15:05:36
● 2026-03-29 15:51:00
○ 2026-03-29 17:14:08
○ 2026-04-01 20:17:52
● 2026-04-01 23:20:58
○ 2026-04-02 03:08:46
○ 2026-04-05 03:32:50
● 2026-04-05 06:42:10
○ 2026-04-05 08:30:58
○ 2026-04-05 15:13:56
● 2026-04-05 17:21:04

●A99.84.234.402026-03-29 → 2026-04-05 · 11 obs

●A99.84.234.92026-03-29 → 2026-04-05 · 11 obs

●A99.84.234.972026-03-29 → 2026-04-05 · 11 obs

○A99.84.237.1192026-03-30 → 2026-04-05 · 28 obs

○ 2026-03-29 23:22:24
● 2026-03-30 00:13:40
○ 2026-03-30 02:01:26
○ 2026-03-30 02:37:22
● 2026-03-30 03:41:22
○ 2026-03-30 07:31:50
○ 2026-03-31 15:48:52
● 2026-03-31 18:19:54
○ 2026-03-31 21:46:26
● 2026-04-01 00:12:48
○ 2026-04-01 00:52:26
○ 2026-04-01 01:28:34
● 2026-04-01 03:23:58
○ 2026-04-01 04:01:28
○ 2026-04-02 06:05:32
● 2026-04-02 11:49:06
○ 2026-04-02 18:42:44
○ 2026-04-02 22:11:30
● 2026-04-02 23:54:02
○ 2026-04-03 01:32:22
○ 2026-04-03 08:26:10
● 2026-04-04 00:14:02
● 2026-04-04 01:03:20
○ 2026-04-04 03:03:48
○ 2026-04-05 06:42:10
● 2026-04-05 08:30:58
○ 2026-04-05 13:01:58
○ 2026-04-05 17:21:04

○A99.84.237.272026-03-30 → 2026-04-05 · 28 obs

○A99.84.237.822026-03-30 → 2026-04-05 · 28 obs

○A99.84.237.942026-03-30 → 2026-04-05 · 28 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
kr	b.dns.kr, c.dns.kr, d.dns.kr, e.dns.kr...	-
efree-lab.kr	cns3.hostcocoa.com, cns2.hostcocoa.com, cns1.hostcocoa.com, cns4.hostcocoa.com	-

✅ Authoritative Response

Server:205.251.199.181

NS records: cns3.hostcocoa.com, cns2.hostcocoa.com, cns1.hostcocoa.com, cns4.hostcocoa.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for efree-lab.kr (unsigned zone)

⏱️ Timing

Total: 899ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`99.84.234.40, 99.84.234.37...`
NS	4	`cns1.hostcocoa.com, cns2.hostcocoa.com...`
SOA	1	`cns1.hostcocoa.com awsdns-hostmaster.ama`

Analysis

IP Addresses

efree-lab.kr refers to four IP numbers: 99.84.234.9, 99.84.234.37, 99.84.234.40 and 99.84.234.97.

Other host names, for instance hieutceramic.com, raonplay.com, sdkconfig.pulse.schibsted.com, montrail.hu and xeoair.com share IP numbers with efree-lab.kr.

Name Servers

efree-lab.kr delegates to four name servers: cns1.hostcocoa.com, cns2.hostcocoa.com, cns3.hostcocoa.com and cns4.hostcocoa.com.

efree-lab.kr at least partially shares name servers with other domains, including blue-sys.co.kr, teamuphill.co.kr, contentsmaker.co.kr, monzsix.com and bered.kr.

Host names with one IP number:

cns1.hostcocoa.com points to 205.251.196.138; cns2.hostcocoa.com points to 205.251.194.81; cns3.hostcocoa.com points to 205.251.193.7; cns4.hostcocoa.com points to 205.251.199.181.

efree-lab.kr - robtex.com

efree-lab.kr

kr

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`efree-lab.kr`

`kr`