`coolworksfilter.com`

DNSSEC	⚠️ Not signed
A	2600:1f14:3cdb:d400:9742:2afd:3b98:4f14^{🇺🇸 Amazon2600:1f14::/34 EC2 PDX Prefix}
A	54.191.130.102^{🇺🇸 Amazon54.191.0.0/16 EC2 PDX prefix}
NS	`ns1.cnolnic.com` ⭐
		A	240c:4082:0:5d01::4^{🇨🇳 Baidu240c:4082::/32}
		A	106.12.208.18^{🇨🇳 Baidu106.12.208.0/20 AS38365}
		A	218.5.79.117^{🇨🇳 CHINATELECOM-Fujian-Xiamen-IDC1218.5.72.0/21 厦门}
NS	`ns2.cnolnic.com`
		A	240c:4082:0:5d01::5^{🇨🇳 Baidu240c:4082::/32}
		A	106.12.205.190^{🇨🇳 Baidu106.12.192.0/20 AS38365}
		A	218.5.79.98^{🇨🇳 CHINATELECOM-Fujian-Xiamen-IDC1218.5.72.0/21 厦门}
MX	`mxbiz1.qq.com` ⭐
MX	`mxbiz2.qq.com`⁽¹⁰⁾
TXT	`v=spf1 include:spf.mail.qq.com ~all`
SOA	`ns1.cnolnic.com`root@cnolnic.com 2006-11-24 #1

`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=1774580592

Subdomains

www.coolworksfilter.com

Same first word

coolworksfilter.com

DNS History

10 records (6 active, 4 former)

○NSdns10.hichina.com2016-12-20 → 2018-01-05 · 4 obs

● 2016-12-20 10:11:14
● 2018-01-05 12:15:14
○ 2026-02-24 00:59:40
○ 2026-03-27 03:23:48

○NSdns9.hichina.com2016-12-20 → 2018-01-05 · 4 obs

● 2016-12-20 10:11:14
● 2018-01-05 12:15:14
○ 2026-02-24 00:59:40
○ 2026-03-27 03:23:48

●NSns1.cnolnic.com2026-02-24 → 2026-03-27 · 3 obs

○ 2018-01-05 12:15:14
● 2026-02-24 00:59:40
● 2026-03-27 03:23:48

●NSns2.cnolnic.com2026-02-24 → 2026-03-27 · 3 obs

○ 2018-01-05 12:15:14
● 2026-02-24 00:59:40
● 2026-03-27 03:23:48

●MXmxbiz1.qq.com2016-12-20 → 2026-03-27 · 2 obs

● 2016-12-20 10:11:14
● 2026-03-27 03:23:48

●MXmxbiz2.qq.com2016-12-20 → 2026-03-27 · 2 obs

● 2016-12-20 10:11:14
● 2026-03-27 03:23:48

○A182.61.100.1142018-01-05 → 2018-01-05 · 4 obs

○ 2016-12-20 10:11:14
● 2018-01-05 12:15:14
○ 2026-02-24 00:59:40
○ 2026-03-27 03:23:48

●A2600:1f14:3cdb:d400:9742:2afd:3b98:4f142026-02-24 → 2026-03-27 · 3 obs

○ 2018-01-05 12:15:14
● 2026-02-24 00:59:40
● 2026-03-27 03:23:48

○A47.90.61.932016-12-20 → 2016-12-20 · 3 obs

● 2016-12-20 10:11:14
○ 2018-01-05 12:15:14
○ 2026-03-27 03:23:48

●A54.191.130.1022026-02-24 → 2026-03-27 · 3 obs

○ 2018-01-05 12:15:14
● 2026-02-24 00:59:40
● 2026-03-27 03:23:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
coolworksfilter.com	ns1.cnolnic.com, ns2.cnolnic.com	6 records

✅ Authoritative Response

Server:106.12.208.18

NS records: ns1.cnolnic.com, ns2.cnolnic.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coolworksfilter.com (unsigned zone)

⏱️ Timing

Total: 4520ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`54.191.130.102`
AAAA	1	`2600:1f14:3cdb:d400:9742:2afd:3b98:4f14`
NS	2	`ns1.cnolnic.com, ns2.cnolnic.com`
MX	2	`mxbiz1.qq.com (pri: 5), mxbiz2.qq.com (pri: 10)`
TXT	1	`v=spf1 include:spf.mail.qq.com ~all`
SOA	1	`ns1.cnolnic.com root.cnolnic.com`

📌 Glue Records Collected

Total: 6

Out-of-bailiwick: 6 (ns1.cnolnic.com, ns1.cnolnic.com, ns1.cnolnic.com...)

Analysis

Hierarchy

The parent of www.coolworksfilter.com is coolworksfilter.com.

IP Addresses

coolworksfilter.com points to two IP numbers: 2600:1f14:3cdb:d400:9742:2afd:3b98:4f14 and 54.191.130.102.

Other host names such as ec2-54-191-130-102.us-west-2.compute.amazonaws.com, www.ahgiec.com, www.coolworksfilter.com and ahgiec.com share IP numbers with coolworksfilter.com.

Name Servers

Two name servers ns1.cnolnic.com and ns2.cnolnic.com handle the delegation for coolworksfilter.com.

coolworksfilter.com shares the same name server setup as other domains, for example wceui.cn, xn--vcso1im6z1okm31a.net, houshi.cn, minami.com.cn and yatii.cn.

Host names with three IP numbers:

ns1.cnolnic.com points to 240c:4082:0:5d01::4, 106.12.208.18 and 218.5.79.117; ns2.cnolnic.com points to 240c:4082:0:5d01::5, 106.12.205.190 and 218.5.79.98.

Mail Servers

Two mail servers handle coolworksfilter.com: mxbiz1.qq.com and mxbiz2.qq.com.

coolworksfilter.com shares the same mail server setup as other domains, including w-anm.com, imagetru3d.com, hnhzsy.cn, kartapparelaccessory.com and lawpass.cn.

coolworksfilter.com shares at least partially some mail servers with other domains, for instance daoking.com, mdino.com, mxsm.com.cn, stonesec.cn and dfhz.cn.

coolworksfilter.com - robtex.com