🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`zhanghuoding.com`

DNSSEC	⚠️ Not signed
A	221.231.140.184^{🇨🇳 CHINATELECOM-JIANGSU-NANJING-IDC221.231.136.0/21 CTJS NJ-IDC}
NS	`dns1.4cun.com` ⭐
		A	2408:4005:3dc:af00:a6be:339e:a1a0:d2b8^{🇨🇳 Alibaba-Cloud2408:4005::/33}
		A	61.172.183.74^{🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC}
NS	`dns.4cun.com` ⚠️ Not in zone NS records
NS	`dns2.51dns.top` ⚠️ Not in zone NS records
		A	2408:4005:3dc:af00:a6be:339e:a1a0:d2b8^{🇨🇳 Alibaba-Cloud2408:4005::/33}
		A	219.138.102.210^{🇨🇳 CHINATELECOM-HUBEI-YICHANG-IDC219.138.102.0/24 yichang}
MX	`mail.zhanghuoding.com` ⭐
		A	221.231.138.63^{🇨🇳 CHINATELECOM-JIANGSU-NANJING-IDC221.231.136.0/21 CTJS NJ-IDC}
			PTR	`oyaks.com.cn`
SOA	`dns.4cun.com`admin@zhanghuoding.com serial=1772528889

`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=1786845519

Subdomains

mail.zhanghuoding.com

Same first word

zhanghuoding.com

DNS History

8 records (5 active, 3 former)

●NSdns.4cun.com2015-05-07 → 2026-08-16 · 7 obs

● 2015-05-07 20:13:06
● 2026-04-13 07:47:24
○ 2026-04-17 13:54:10
● 2026-06-09 10:36:40
○ 2026-07-18 15:22:46
● 2026-07-22 23:35:36
● 2026-08-16 02:02:06

●NSdns1.4cun.com2026-02-24 → 2026-08-16 · 3 obs

○ 2015-05-07 20:13:06
● 2026-02-24 01:18:10
● 2026-08-16 02:02:06

●NSdns2.51dns.top2026-02-24 → 2026-08-16 · 3 obs

○ 2015-05-07 20:13:06
● 2026-02-24 01:18:10
● 2026-08-16 02:02:06

●MXmail.zhanghuoding.com2015-10-19 → 2026-08-16 · 7 obs

● 2015-10-19 09:22:48
● 2026-04-13 07:47:24
○ 2026-04-17 13:54:10
● 2026-06-09 10:36:40
○ 2026-07-18 15:22:46
● 2026-07-22 23:35:36
● 2026-08-16 02:02:06

○A202.102.72.402015-05-07 → 2016-07-22 · 4 obs

● 2015-05-07 20:13:06
● 2016-07-22 02:10:56
○ 2017-03-25 22:39:26
○ 2026-08-16 02:02:06

○A221.231.137.792017-03-25 → 2017-03-25 · 4 obs

○ 2016-07-22 02:10:56
● 2017-03-25 22:39:26
○ 2020-02-05 07:22:18
○ 2026-08-16 02:02:06

●A221.231.140.1842026-02-24 → 2026-08-16 · 8 obs

○ 2020-02-05 07:22:18
● 2026-02-24 01:18:10
● 2026-04-13 07:47:24
○ 2026-04-17 13:54:10
● 2026-06-09 10:36:40
○ 2026-07-18 15:22:46
● 2026-07-22 23:35:36
● 2026-08-16 02:02:06

○CNAMEnewresolve.huyim54.80data.net2020-02-05 → 2020-02-05 · 3 obs

● 2020-02-05 07:22:18
○ 2026-02-24 01:18:10
○ 2026-08-16 02:02:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, g.gtld-servers.net, h.gtld-servers.net, e.gtld-servers.net...	-
zhanghuoding.com	dns1.4cun.com, dns2.51dns.top	2 records

✅ Authoritative Response

Server:61.172.183.74

NS records: dns1.4cun.com, dns2.51dns.top

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for zhanghuoding.com (unsigned zone)

⏱️ Timing

Total: 1779ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`221.231.140.184`
MX	1	`mail.zhanghuoding.com (pri: 10)`
SOA	1	`dns.4cun.com admin.zhanghuoding.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (dns1.4cun.com, dns1.4cun.com)

Analysis

Hierarchy

mail.zhanghuoding.com is a subdomain of zhanghuoding.com.

IP Addresses

zhanghuoding.com resolves to one IP address: 221.231.140.184.

jsjysf.com, aprodisk.com, x-rgroup.com and two other host names share IP numbers with zhanghuoding.com.

Name Servers

zhanghuoding.com is served by three name servers: dns1.4cun.com, dns.4cun.com and dns2.51dns.top.

The name servers of zhanghuoding.com overlap at least partially with those of other domains — among them fystes.com, ks-xc.com.cn, sgdconn.com and two more.

These name servers commonly appear in delegations together with dns3.4cun.com, dns4.51dns.top, dns2.4cun.com and 7 other.

Both dns1.4cun.com and dns2.51dns.top have two IP addresses each. dns1.4cun.com resolves to 61.172.183.74 and 2408:4005:3dc:af00:a6be:339e:a1a0:d2b8; dns2.51dns.top resolves to 219.138.102.210 and 2408:4005:3dc:af00:a6be:339e:a1a0:d2b8.

dns1.4cun.com and dns2.51dns.top each have 2408:4005:3dc:af00:a6be:339e:a1a0:d2b8 IP addresses.

Mail Servers

Mail for zhanghuoding.com is handled by a single mail server, mail.zhanghuoding.com.

mail.zhanghuoding.com resolves to 221.231.138.63 and no other IP number.

zhanghuoding.com - robtex.com