`szbuilder.com`

DNSSEC	⚠️ Not signed
A	103.72.145.153^{🇸🇬 UCLOUD-1103.72.145.0/24 BB Connect Route Object for Customer (Zenlayer)}
NS	`ns1.22.cn` ⭐
		A	2001:df2:f080:1::5^{🇭🇰 HKCICL-AS-AP2001:df2:f080::/48 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED}
		A	61.158.128.10^{🇨🇳 CHINA169-Backbone61.158.128.0/17 CNC Group CHINA169 Henan Province Network}
			PTR	`10.128.158.61.ha.cnc`
		A	218.98.111.136^{🇩🇪 HKCICL-AS-AP218.98.111.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED}
NS	`ns2.22.cn`
		A	240e:97d:10:1402:0:1:0:1002^{🇨🇳 CHINANET-Guangdong-DongGuan-IDC240e:97d::/36 DongGuan IDC Network}
		A	1.193.216.203^{🇨🇳 CHINANET-Henan-Luoyang-IDC1.193.216.0/24 Chinatelecom HeNan Province Network}
		A	183.253.57.207^{🇨🇳 CHINAMOBILE-CN183.253.0.0/16 CMI (Customer Route)}
		A	211.99.99.61^{🇨🇳 DONGGUAN-1211.99.99.0/24 Proxy-registered route object}
MX	`mxbiz1.qq.com` ⭐
		A	203.205.147.218^{🇭🇰 TENCENT-NET-AP-CN203.205.147.0/24 Proxy-registered route object}
		A	203.205.232.191^{🇭🇰 TENCENT-NET-AP-CN203.205.232.0/23 Proxy-registered route object}
MX	`mxbiz2.qq.com`⁽¹⁰⁾
		A	203.205.232.191^{🇭🇰 TENCENT-NET-AP-CN203.205.232.0/23 Proxy-registered route object}
TXT	`v=spf1 include:spf.mail.qq.com ~all`
SOA	`ns1.22.cn`dnsadmin@22.cn serial=1751342717

`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

Same first word

szbuilder.com

Similar names

zsbuilder.com

DNS History

7 records (5 active, 2 former)

○NSdns7.hichina.com2016-12-16 → 2017-10-21 · 4 obs

● 2016-12-16 00:14:14
● 2017-10-21 18:46:44
○ 2026-02-25 11:10:12
○ 2026-03-23 05:46:38

○NSdns8.hichina.com2016-12-16 → 2017-10-21 · 4 obs

● 2016-12-16 00:14:14
● 2017-10-21 18:46:44
○ 2026-02-25 11:10:12
○ 2026-03-23 05:46:38

●NSns1.22.cn2026-02-25 → 2026-03-23 · 3 obs

○ 2017-10-21 18:46:44
● 2026-02-25 11:10:12
● 2026-03-23 05:46:38

●NSns2.22.cn2026-02-25 → 2026-03-23 · 3 obs

○ 2017-10-21 18:46:44
● 2026-02-25 11:10:12
● 2026-03-23 05:46:38

●MXmxbiz1.qq.com2016-12-16 → 2026-03-23 · 2 obs

● 2016-12-16 00:14:14
● 2026-03-23 05:46:38

●MXmxbiz2.qq.com2016-12-16 → 2026-03-23 · 2 obs

● 2016-12-16 00:14:14
● 2026-03-23 05:46:38

●A103.72.145.1532026-02-25 → 2026-03-23 · 2 obs

● 2026-02-25 11:10:12
● 2026-03-23 05:46:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
szbuilder.com	ns2.22.cn, ns1.22.cn	-

✅ Authoritative Response

Server:211.99.99.61

NS records: ns2.22.cn, ns1.22.cn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for szbuilder.com (unsigned zone)

⏱️ Timing

Total: 4397ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.72.145.153`
NS	2	`ns1.22.cn, ns2.22.cn`
MX	2	`mxbiz2.qq.com (pri: 10), mxbiz1.qq.com (pri: 5)`
TXT	1	`v=spf1 include:spf.mail.qq.com ~all`
SOA	1	`ns1.22.cn dnsadmin.22.cn`

Analysis

IP Addresses

szbuilder.com resolves to one IP number: 103.72.145.153.

Other host names, for instance iracetec.com, share IP numbers with szbuilder.com.

Name Servers

szbuilder.com is delegated to two name servers ns1.22.cn and ns2.22.cn.

szbuilder.com shares the same name server setup as other domains, for instance macaumax.com, vadt.cn, xryb.com, shufaren.com and lhdlyy.cn.

Host names with four IP numbers: The host name ns2.22.cn points to 240e:97d:10:1402:0:1:0:1002, 1.193.216.203, 183.253.57.207 and 211.99.99.61.

Host names with three IP numbers: The host name ns1.22.cn points to 2001:df2:f080:1::5, 61.158.128.10 and 218.98.111.136.

Mail Servers

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

szbuilder.com shares the same mail server setup as other domains, for instance xuntan.com.cn, wsw.us, xieyouxiang.com, phipen.com and bohr.cn.

szbuilder.com shares at least some mail servers with other domains, including qq.ms, mebxy.com, c-light.com.cn and newtmc.com.

Host names with two IP numbers: mxbiz1.qq.com points to 203.205.147.218 and 203.205.232.191.

Host names with one IP number: mxbiz2.qq.com points to 203.205.232.191.

Host names that point to 203.205.232.191: mxbiz1.qq.com and mxbiz2.qq.com.

szbuilder.com - robtex.com

szbuilder.com

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