coolcert.com - dns.ninja

`coolcert.com`

DNSSEC	⚠️ Not signed
A	75.2.85.42^{🇺🇸 Amazon75.2.80.0/20}
		PTR	`a4c6c51f8b10d0080.awsglobalaccelerator.com`
A	99.83.196.71^{🇺🇸 Amazon99.83.192.0/20}
NS	`ns1.hosting.co.kr` ⭐
		A	121.254.170.11^{🇰🇷 DACOM-NET121.254.128.0/17 contact noc@bora.net if necessary}
NS	`ns2.hosting.co.kr`
		A	43.201.141.93^{🇰🇷 Amazon43.200.0.0/14 EC2 ICN Prefix}
			PTR	`ec2-43-201-141-93.ap-northeast-2.compute.amazonaws.com`
NS	`ns3.hosting.co.kr` ⚠️ Not in parent delegation
		A	121.254.170.12^{🇰🇷 DACOM-NET121.254.128.0/17 contact noc@bora.net if necessary}
NS	`ns4.hosting.co.kr` ⚠️ Not in parent delegation
		A	43.201.141.93^{🇰🇷 Amazon43.200.0.0/14 EC2 ICN Prefix}
			PTR	`ec2-43-201-141-93.ap-northeast-2.compute.amazonaws.com`
MX	`dmx-1.naver.com` ⭐
MX	`dmx-2.naver.com` ⭐
SOA	`ns1.hosting.co.kr`admin@coolcert.com serial=6

`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=1786426909

Same first word

coolcert.com

Similar names

DNS History

9 records (8 active, 1 former)

●NSns1.hosting.co.kr2015-05-19 → 2026-08-11 · 10 obs

● 2015-05-19 06:48:00
● 2026-03-08 04:40:40
○ 2026-03-10 11:10:54
○ 2026-03-27 06:59:20
● 2026-04-09 04:06:14
○ 2026-07-09 11:45:16
● 2026-07-16 03:25:54
○ 2026-07-21 05:02:52
● 2026-07-21 13:12:56
● 2026-08-11 06:00:20

●NSns2.hosting.co.kr2015-05-19 → 2026-08-11 · 10 obs

●NSns3.hosting.co.kr2026-02-19 → 2026-08-11 · 25 obs

○ 2015-05-19 06:48:00
● 2026-02-19 02:22:38
● 2026-03-08 04:40:40
○ 2026-03-10 11:10:54
○ 2026-04-16 13:10:00
● 2026-04-17 07:41:18
○ 2026-04-17 15:54:38
○ 2026-04-24 00:12:40
● 2026-04-24 20:00:42
● 2026-05-01 13:24:34
○ 2026-05-06 16:52:58
○ 2026-05-14 21:14:48
● 2026-05-18 14:31:44
● 2026-05-21 03:33:40
○ 2026-05-23 12:02:06
○ 2026-05-24 19:10:04
● 2026-05-27 03:44:58
○ 2026-05-27 16:29:16
● 2026-06-20 10:23:00
○ 2026-06-21 04:05:10
● 2026-07-08 15:10:46
○ 2026-07-09 11:45:16
● 2026-07-19 02:38:40
○ 2026-07-21 05:02:52
● 2026-08-11 06:00:20

●NSns4.hosting.co.kr2026-02-19 → 2026-08-11 · 25 obs

●MXdmx-1.naver.com2015-05-19 → 2026-08-11 · 19 obs

● 2015-05-19 06:48:00
● 2026-03-08 04:40:40
○ 2026-03-10 11:10:54
○ 2026-04-24 00:12:40
● 2026-04-24 20:00:42
● 2026-05-01 13:24:34
○ 2026-05-06 16:52:58
○ 2026-05-14 21:14:48
● 2026-05-18 14:31:44
● 2026-05-21 03:33:40
○ 2026-05-23 12:02:06
○ 2026-05-24 19:10:04
● 2026-05-27 03:44:58
○ 2026-05-27 16:29:16
● 2026-07-08 15:10:46
○ 2026-07-09 11:45:16
● 2026-07-19 02:38:40
○ 2026-07-21 05:02:52
● 2026-08-11 06:00:20

●MXdmx-2.naver.com2015-05-19 → 2026-08-11 · 19 obs

○A211.234.63.2322015-05-19 → 2018-01-01 · 4 obs

● 2015-05-19 06:48:00
● 2018-01-01 10:35:46
○ 2026-02-19 02:22:38
○ 2026-08-11 06:00:20

●A75.2.85.422026-02-19 → 2026-08-11 · 17 obs

○ 2018-01-01 10:35:46
● 2026-02-19 02:22:38
● 2026-03-08 04:40:40
○ 2026-03-10 11:10:54
○ 2026-04-24 00:12:40
● 2026-04-24 20:00:42
● 2026-05-01 13:24:34
○ 2026-05-06 16:52:58
○ 2026-05-14 21:14:48
● 2026-05-18 14:31:44
● 2026-05-21 03:33:40
○ 2026-05-23 12:02:06
● 2026-07-08 15:10:46
○ 2026-07-09 11:45:16
● 2026-07-19 02:38:40
○ 2026-07-21 05:02:52
● 2026-08-11 06:00:20

●A99.83.196.712026-02-19 → 2026-08-11 · 17 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, b.gtld-servers.net, g.gtld-servers.net, l.gtld-servers.net...	-
coolcert.com	ns2.hosting.co.kr, ns1.hosting.co.kr	-

✅ Authoritative Response

Server:43.201.141.93

NS records: ns2.hosting.co.kr, ns1.hosting.co.kr

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coolcert.com (unsigned zone)

⏱️ Timing

Total: 1102ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`75.2.85.42, 99.83.196.71`
NS	4	`ns3.hosting.co.kr, ns2.hosting.co.kr...`
MX	2	`dmx-2.naver.com (pri: 10), dmx-1.naver.com (pri: 10)`
SOA	1	`ns1.hosting.co.kr admin.coolcert.com`

Analysis

IP Addresses

coolcert.com has two IP addresses: 75.2.85.42 and 99.83.196.71

Two other host names, along with kosbc.com, ollo.kr and xn--oi2bl9g1qe790a.com, also share IP numbers with coolcert.com.

Name Servers

The NS records for coolcert.com point to four name servers: ns1.hosting.co.kr, ns2.hosting.co.kr, ns3.hosting.co.kr and ns4.hosting.co.kr.

At least some of coolcert.com's name servers are shared with other domains, for example ehansome.com, nextline.co.kr, elastic.kr and two more.

These name servers tend to be used in conjunction with the name servers dns1.maxion.co.kr.

The hosts ns1.hosting.co.kr, ns2.hosting.co.kr, ns3.hosting.co.kr and ns4.hosting.co.kr each carry one IP address: 121.254.170.11 for ns1.hosting.co.kr, 43.201.141.93 for ns2.hosting.co.kr, 121.254.170.12 for ns3.hosting.co.kr and 43.201.141.93 for ns4.hosting.co.kr. The address 43.201.141.93 is shared by ns2.hosting.co.kr and ns4.hosting.co.kr.

ns2.hosting.co.kr along with ns4.hosting.co.kr each resolve to 43.201.141.93 IP addresses.

Mail Servers

coolcert.com is served by two mail servers, dmx-1.naver.com and dmx-2.naver.com.

Among the domains sharing a mail server setup with coolcert.com are humormoa.com, kapju.com, uol.kr and two others.

There is at least a partial MX overlap between coolcert.com and other domains, including soocase.com, eduhube.com, e-smi.com and two others.

These mail servers often co-occur with the mail servers kr1-aspmx1.worksmobile.com.