`duoguantech.com`

DNSSEC	⚠️ Not signed
A	121.41.108.185^{🇨🇳 Alibaba-Cloud121.40.0.0/15}
NS	`dns3.4cun.com` ⭐
		A	2408:4005:3dc:af00:a6be:339e:a1a0:ceb7^{🇨🇳 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	`dns4.51dns.top` ⚠️ Not in zone NS records
		A	2408:4005:3dc:af00:a6be:339e:a1a0:ceb7^{🇨🇳 Alibaba-Cloud2408:4005::/33}
		A	219.138.102.210^{🇨🇳 CHINATELECOM-HUBEI-YICHANG-IDC219.138.102.0/24 yichang}
MX	`mx.mail.ym.163.com` ⭐
		A	111.124.200.35^{🇨🇳 CHINANET-Guizhou-Guian-IDC111.124.192.0/19}
SOA	`dns.4cun.com`admin@duoguantech.com serial=1772527397

`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=1774458657

Same first word

duoguantech.com

Similar names

dougcauthen.com

DNS History

6 records (5 active, 1 former)

●NSdns.4cun.com2015-08-18 → 2026-03-25 · 2 obs

● 2015-08-18 21:50:06
● 2026-03-25 17:16:48

●NSdns3.4cun.com2026-02-17 → 2026-03-25 · 3 obs

○ 2015-08-18 21:50:06
● 2026-02-17 16:16:56
● 2026-03-25 17:16:48

●NSdns4.51dns.top2026-02-17 → 2026-03-25 · 3 obs

○ 2015-08-18 21:50:06
● 2026-02-17 16:16:56
● 2026-03-25 17:16:48

●MXmx.mail.ym.163.com2015-08-18 → 2026-03-25 · 2 obs

● 2015-08-18 21:50:06
● 2026-03-25 17:16:48

○A112.124.48.1692015-08-18 → 2017-03-18 · 4 obs

● 2015-08-18 21:50:06
● 2017-03-18 11:33:06
○ 2019-12-25 10:34:58
○ 2026-03-25 17:16:48

●A121.41.108.1852019-12-25 → 2026-03-25 · 3 obs

○ 2017-03-18 11:33:06
● 2019-12-25 10:34:58
● 2026-03-25 17:16:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, l.gtld-servers.net, f.gtld-servers.net, a.gtld-servers.net...	-
duoguantech.com	dns3.4cun.com, dns4.51dns.top	2 records

✅ Authoritative Response

Server:61.172.183.74

NS records: dns3.4cun.com, dns4.51dns.top

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for duoguantech.com (unsigned zone)

⏱️ Timing

Total: 968ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`121.41.108.185`
MX	1	`mx.mail.ym.163.com (pri: 10)`
SOA	1	`dns.4cun.com admin.duoguantech.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (dns3.4cun.com, dns3.4cun.com)

Analysis

IP Addresses

duoguantech.com points to IP number: 121.41.108.185.

Name Servers

duoguantech.com is delegated to three name servers: dns3.4cun.com, dns.4cun.com and dns4.51dns.top.

duoguantech.com at least partially shares name servers with other domains, for instance wj008.net, yiyoutongcheng.com, ctonl.com, cnvhair.com and mybr.org.

These name servers are commonly used alongside dns7.4cun.com, ns3.4cun.com, ns4.4cun.com, ns1.4cun.com, dns5.4cun.com, dns6.51dns.top, dns1.4cun.com, dns2.51dns.top, dns4.4cun.com and dns8.51dns.top.

Host names with two IP numbers:

dns3.4cun.com points to 2408:4005:3dc:af00:a6be:339e:a1a0:ceb7 and 61.172.183.74.

dns4.51dns.top points to 2408:4005:3dc:af00:a6be:339e:a1a0:ceb7 and 219.138.102.210.

Host names that point to 2408:4005:3dc:af00:a6be:339e:a1a0:ceb7: dns3.4cun.com and dns4.51dns.top.

Mail Servers

duoguantech.com is handled by a single mail server, mx.mail.ym.163.com.

The mail server setup for duoguantech.com matches that of other domains, for instance cnccss.cn, aogun.com, sdhxsj.com, cnnin.com.cn and shangriland.com.

duoguantech.com shares mail servers with other domains, for instance seahisun.com and gobuydental.com.

mx.mail.ym.163.com points to a single IP: 111.124.200.35.

duoguantech.com - robtex.com

duoguantech.com

com