`coolshark.com`

DNSSEC	⚠️ Not signed
A	47.95.169.240^{🇨🇳 Alibaba-Cloud47.94.0.0/15 CT BeiJing IDC}
NS	`dns23.hichina.com` ⭐
		A	2408:4009:501::31^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.40^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-40.defastlink.net`
		A	39.96.153.60^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-60.defastlink.net`
		A	47.118.199.200^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-200.defastlink.net`
		A	47.118.199.220^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-220.defastlink.net`
		A	120.76.107.40^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-40.defastlink.net`
		A	120.76.107.60^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-60.defastlink.net`
		A	139.224.142.100^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
			PTR	`ip-139-224-142-100.defastlink.net`
		A	139.224.142.110^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
			PTR	`ip-139-224-142-110.defastlink.net`
NS	`dns24.hichina.com`
		A	2408:4009:501::32^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.38^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-38.defastlink.net`
		A	39.96.153.61^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-61.defastlink.net`
		A	47.118.199.198^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-198.defastlink.net`
		A	47.118.199.222^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-222.defastlink.net`
		A	120.76.107.38^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-38.defastlink.net`
		A	120.76.107.61^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-61.defastlink.net`
		A	139.224.142.98^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
			PTR	`ip-139-224-142-98.defastlink.net`
		A	139.224.142.108^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
			PTR	`ip-139-224-142-108.defastlink.net`
MX	`mxn.mxhichina.com` ⭐
		A	47.246.136.231^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
			PTR	`cz-clare.com`
			PTR	`reachsmartdwell.com`
			PTR	`wevolt.tech`
		A	47.246.137.47^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
			PTR	`ip-47-246-137-47.defastlink.net`
MX	`mxw.mxhichina.com`⁽¹⁰⁾
		A	47.246.99.195^{🇺🇸 Alibaba-Cloud47.246.96.0/22 Proxy-registered route object}
			PTR	`reachsmartdwell.com`
TXT	`MS=ms87901722`
TXT	`v=spf1 include:spf.qiye.aliyun.com -all`
SOA	`dns23.hichina.com`hostmaster@hichina.com 2026-01-09 #13

`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=1771291435

Subdomains

mail.coolshark.com

www.coolshark.com

Same first word

coolshark.com

coolshark.de

Similar names

kochsolar.de

arkschool.net

locoshark.com

solarkoch.de

arkschool.org

sharkcool.net

kochsolar.com

sharkcool.com

schoolark.com

arkschool.in.ua

arkschool.nl

DNS History

12 records (5 active, 7 former)

●NSdns23.hichina.com2026-03-16 → 2026-03-16 · 2 obs

○ 2017-02-01 00:37:38
● 2026-03-16 12:03:36

●NSdns24.hichina.com2026-03-16 → 2026-03-16 · 2 obs

○ 2017-02-01 00:37:38
● 2026-03-16 12:03:36

○NSns1.sadecehosting.com2015-08-12 → 2017-02-01 · 3 obs

● 2015-08-12 15:24:22
● 2017-02-01 00:37:38
○ 2026-03-16 12:03:36

○NSns2.sadecehosting.com2015-08-12 → 2017-02-01 · 3 obs

● 2015-08-12 15:24:22
● 2017-02-01 00:37:38
○ 2026-03-16 12:03:36

○MXetrn.doruk.net.tr2015-08-12 → 2017-02-01 · 3 obs

● 2015-08-12 15:24:22
● 2017-02-01 00:37:38
○ 2026-03-16 12:03:36

○MXmail.coolshark.com2015-08-12 → 2017-02-01 · 3 obs

● 2015-08-12 15:24:22
● 2017-02-01 00:37:38
○ 2026-03-16 12:03:36

○MXmail2.coolshark.com2015-08-12 → 2017-02-01 · 3 obs

● 2015-08-12 15:24:22
● 2017-02-01 00:37:38
○ 2026-03-16 12:03:36

○MXmail3.coolshark.com2015-08-12 → 2017-02-01 · 3 obs

● 2015-08-12 15:24:22
● 2017-02-01 00:37:38
○ 2026-03-16 12:03:36

●MXmxn.mxhichina.com2026-03-16 → 2026-03-16 · 2 obs

○ 2017-02-01 00:37:38
● 2026-03-16 12:03:36

●MXmxw.mxhichina.com2026-03-16 → 2026-03-16 · 2 obs

○ 2017-02-01 00:37:38
● 2026-03-16 12:03:36

○A212.68.51.1782015-08-12 → 2017-02-01 · 3 obs

● 2015-08-12 15:24:22
● 2017-02-01 00:37:38
○ 2026-03-16 12:03:36

●A47.95.169.2402026-03-16 → 2026-03-16 · 2 obs

○ 2017-02-01 00:37:38
● 2026-03-16 12:03:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
coolshark.com	dns23.hichina.com, dns24.hichina.com	18 records

✅ Authoritative Response

Server: 120.76.107.40

NS records: dns23.hichina.com, dns24.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coolshark.com (unsigned zone)

⏱️ Timing

Total: 1166ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`47.95.169.240`
NS	2	`dns23.hichina.com, dns24.hichina.com`
MX	2	`mxw.mxhichina.com (pri: 10), mxn.mxhichina.com (pri: 5)`
TXT	2	`v=spf1 include:spf.qiye.aliyun.com -all, MS=ms87901722`
SOA	1	`dns23.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns23.hichina.com, dns23.hichina.com, dns23.hichina.com...)

Analysis

Hierarchy

coolshark.com is a parent of mail.coolshark.com and www.coolshark.com.

IP Addresses

coolshark.com resolves to one IP number: 47.95.169.240.

Name Servers

coolshark.com's delegation uses two name servers: dns23.hichina.com and dns24.hichina.com.

coolshark.com uses the same name server setup as other domains, such as xptd.com, joywertb.com, yipinpay.com, takefive.info and focusgen.com.

coolshark.com shares name servers with other domains at least partially, for example yulong.com, myrs.com and greenlds.com.

These name servers are often used with ns1.alidns.com and ns2.alidns.com.

Host names with nine IP numbers: The host name dns23.hichina.com points to 2408:4009:501::31, 39.96.153.40, 39.96.153.60, 47.118.199.200, 47.118.199.220, 120.76.107.40, 120.76.107.60, 139.224.142.100 and 139.224.142.110. The host name dns24.hichina.com points to 2408:4009:501::32, 39.96.153.38, 39.96.153.61, 47.118.199.198, 47.118.199.222, 120.76.107.38, 120.76.107.61, 139.224.142.98 and 139.224.142.108.

Mail Servers

coolshark.com is served by two mail servers mxn.mxhichina.com and mxw.mxhichina.com.

coolshark.com shares the same mail server setup as other domains, for instance hisicpower.com, challux.com, playsmart.cn, 2134.cn and fandapelletmill.com.

coolshark.com shares at least some mail servers with other domains, for example yoomall.com, eforworld.com, warpmed.com, veifi.com and jcb-bearing.com.

Host names with two IP numbers: mxn.mxhichina.com points to 47.246.136.231 and 47.246.137.47.

Host names with one IP number: mxw.mxhichina.com points to 47.246.99.195.

coolshark.com - robtex.com

coolshark.com

com

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`coolshark.com`

`com`