`fu4.cn`

DNSSEC	⚠️ Not signed
A	124.232.153.140^{🇨🇳 CHINANET-BACKBONE124.232.0.0/15 China Telecom Network}
NS	`ns19.xincache.com` ⭐
		A	2402:4e00:1470:2::e^{🇨🇳 TENCENT-NET-AP2402:4e00:1400::/40}
		A	2402:4e00:1730::e^{🇨🇳 TENCENT-NET-AP2402:4e00:1700::/40}
		A	1.12.0.4^{🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM}
		A	36.155.149.180^{🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)}
		A	112.80.181.45^{🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network}
		A	117.89.178.173^{🇨🇳 ChinaNet-NANJING-JISHAN-IDC117.89.176.0/21 JS-CT NJ-JS-IDC}
		A	125.94.59.210^{🇨🇳 CHINANET-BACKBONE125.88.0.0/13 chinanet Guangdong network}
		A	129.211.176.209^{🇨🇳 TENCENT-NET-AP129.211.176.0/20}
NS	`ns20.xincache.com`
		A	2402:4e00:111:fff::c^{🇨🇳 TENCENT-NET-AP2402:4e00::/35}
		A	1.12.0.1^{🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM}
		A	36.155.149.176^{🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)}
		A	112.80.181.111^{🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network}
		A	117.89.178.184^{🇨🇳 ChinaNet-NANJING-JISHAN-IDC117.89.176.0/21 JS-CT NJ-JS-IDC}
		A	129.211.176.239^{🇨🇳 TENCENT-NET-AP129.211.176.0/20}
		A	163.177.5.23^{🇨🇳 UNICOM-GuangZhou-IDC163.177.5.0/24}
SOA	`ns19.xincache.com`enterprise1dnsadmin@dnspod.com serial=1576652710

`cn`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.dns.cn` ⭐
	NS	`b.dns.cn`
	NS	`c.dns.cn`
	NS	`d.dns.cn`
	NS	`e.dns.cn`
	NS	`ns.cernet.net` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn 2035-11-07 #96

Same first word

fu4.net

fu4.com

fu4.cn

Similar names

f4u.gr

u4f.org

f4u.com.cn

u4f.de

4fu.info

f4u.at

f4u.cc

uf4.com

f4u.in

4fu.ru

4uf.com

uf4.de

f4u.fi

f4u.co

f4u.ir

f4u.co.il

f4u.eu

f4u.de

f4u.net

f4u.info

f4u.com.tw

f4u.com

4fu.top

4fu.cn

4fu.de

uf4.net

u4f.net

u4f.ru

4fu.com

f4u.ru

f4u.org

f4u.od.ua

4fu.net

f4u.ch

u4f.com

f4u.pl

4fu.tv

DNS History

5 records (3 active, 2 former)

○NSns15.xincache.com2015-05-20 → 2016-03-14 · 4 obs

● 2015-05-20 19:03:40
● 2016-03-14 10:57:28
○ 2016-12-09 18:47:36
○ 2026-07-30 12:02:14

○NSns16.xincache.com2015-05-20 → 2016-03-14 · 4 obs

● 2015-05-20 19:03:40
● 2016-03-14 10:57:28
○ 2016-12-09 18:47:36
○ 2026-07-30 12:02:14

●NSns19.xincache.com2016-12-09 → 2026-07-30 · 3 obs

○ 2016-03-14 10:57:28
● 2016-12-09 18:47:36
● 2026-07-30 12:02:14

●NSns20.xincache.com2016-12-09 → 2026-07-30 · 3 obs

○ 2016-03-14 10:57:28
● 2016-12-09 18:47:36
● 2026-07-30 12:02:14

●A124.232.153.1402015-05-20 → 2026-07-30 · 2 obs

● 2015-05-20 19:03:40
● 2026-07-30 12:02:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	e.dns.cn, a.dns.cn, c.dns.cn, d.dns.cn...	-
fu4.cn	ns19.xincache.com, ns20.xincache.com	-

✅ Authoritative Response

Server:117.89.178.173

NS records: ns19.xincache.com, ns20.xincache.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for fu4.cn (unsigned zone)

⏱️ Timing

Total: 1358ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`124.232.153.140`
NS	2	`ns20.xincache.com, ns19.xincache.com`
SOA	1	`ns19.xincache.com enterprise1dnsadmin.dn`

Analysis

IP Addresses

fu4.cn directs to one IP number, which is 124.232.153.140.

Other host names, such as chejia.com.cn, share IP numbers with fu4.cn.

Name Servers

fu4.cn is delegated to two name servers: ns19.xincache.com and ns20.xincache.com.

fu4.cn has the same name server delegation as a number of other domains, such as gld-granite.com, crownlead.net, hangchow.org and two more.

fu4.cn has at least partial name server overlap with other domains, such as baishiqiang.com, cosci-med.com, dilumen.com and two others.

It is common to see these name servers used together with name servers ns11.xincache.com and ns12.xincache.com.

Host names resolving to 8 IP numbers:

ns19.xincache.com resolves to 1.12.0.4, 36.155.149.180, 112.80.181.45 and 5 other IP addresses.

Host names resolving to 7 IP numbers:

ns20.xincache.com resolves to 1.12.0.1, 36.155.149.176, 112.80.181.111 and 4 other IP addresses.

fu4.cn - robtex.com

fu4.cn

cn