`qdcentury.com`

DNSSEC	⚠️ Not signed
A	142.171.97.81^{🇺🇸 MULTA-ASN1142.171.0.0/17}
NS	`dns.bizcn.com` ⭐
		A	240c:4082:ffff:ff01:0:d:0:34a^{🇨🇳 Baidu240c:4082::/32}
		A	61.172.183.76^{🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC}
		A	61.240.129.114^{🇨🇳 CHINA169-Backbone61.240.128.0/19 CMI (Customer Route)}
NS	`ns1.dns.com.cn`
		A	240c:4082:ffff:ff01:0:d:0:34a^{🇨🇳 Baidu240c:4082::/32}
		A	61.172.183.70^{🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC}
		A	61.240.129.114^{🇨🇳 CHINA169-Backbone61.240.128.0/19 CMI (Customer Route)}
NS	`ns2.dns.com.cn`
		A	240c:4082:ffff:ff01:0:d:0:69^{🇨🇳 Baidu240c:4082::/32}
		A	61.172.183.76^{🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC}
		A	61.240.129.147^{🇨🇳 CHINA169-Backbone61.240.128.0/19 CMI (Customer Route)}
MX	`mxbiz1.qq.com` ⭐
MX	`mxbiz2.qq.com`⁽¹⁰⁾
TXT	`v=spf1 include:spf.mail.qq.com ~all`
SOA	`dns.bizcn.com`abuse@bizcn.com serial=23

`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=1774680622

Same first word

qdcentury.com

DNS History

9 records (6 active, 3 former)

●NSdns.bizcn.com2017-03-29 → 2026-03-28 · 3 obs

○ 2015-07-21 09:41:58
● 2017-03-29 05:53:30
● 2026-03-28 06:58:02

●NSns1.dns.com.cn2015-07-21 → 2026-03-28 · 2 obs

● 2015-07-21 09:41:58
● 2026-03-28 06:58:02

●NSns2.dns.com.cn2015-07-21 → 2026-03-28 · 5 obs

● 2015-07-21 09:41:58
● 2017-03-29 05:53:30
○ 2020-02-17 09:11:54
● 2026-03-04 11:56:06
● 2026-03-28 06:58:02

○MXmailmx2.dns.com.cn2015-07-21 → 2015-07-21 · 3 obs

● 2015-07-21 09:41:58
○ 2016-03-09 23:31:42
○ 2026-03-28 06:58:02

●MXmxbiz1.qq.com2016-03-09 → 2026-03-28 · 3 obs

○ 2015-07-21 09:41:58
● 2016-03-09 23:31:42
● 2026-03-28 06:58:02

●MXmxbiz2.qq.com2020-02-17 → 2026-03-28 · 3 obs

○ 2016-03-09 23:31:42
● 2020-02-17 09:11:54
● 2026-03-28 06:58:02

●A142.171.97.812026-03-04 → 2026-03-28 · 3 obs

○ 2020-02-17 09:11:54
● 2026-03-04 11:56:06
● 2026-03-28 06:58:02

○A192.254.197.1732015-07-21 → 2017-03-29 · 4 obs

● 2015-07-21 09:41:58
● 2017-03-29 05:53:30
○ 2020-02-17 09:11:54
○ 2026-03-28 06:58:02

○A23.234.195.852020-02-17 → 2020-02-17 · 4 obs

○ 2017-03-29 05:53:30
● 2020-02-17 09:11:54
○ 2026-03-04 11:56:06
○ 2026-03-28 06:58:02

🔍 DNS Trace

Analysis

IP Addresses

qdcentury.com resolves to a single IP address: 142.171.97.81.

Name Servers

qdcentury.com is delegated to three name servers: dns.bizcn.com, ns1.dns.com.cn and ns2.dns.com.cn.

qdcentury.com at least partially shares name servers with other domains, including hermosa-sh.com, xn--2es32qiv2b.com, ljcy1998.com, yzsx119.com and yunn-tech.com.

These name servers are commonly used with ns7.cnmsn.net, ns8.cnmsn.net, ns13.dns.com.cn, ns14.dns.com.cn, ns5.cnmsn.net, ns6.cnmsn.net and dns.cnmsn.net.

Host name dns.bizcn.com points to: 240c:4082:ffff:ff01:0:d:0:34a, 61.172.183.76 and 61.240.129.114.

Host name ns1.dns.com.cn points to: 240c:4082:ffff:ff01:0:d:0:34a, 61.172.183.70 and 61.240.129.114.

Host name ns2.dns.com.cn points to: 240c:4082:ffff:ff01:0:d:0:69, 61.172.183.76 and 61.240.129.147.

Host names pointing to 240c:4082:ffff:ff01:0:d:0:34a: dns.bizcn.com and ns1.dns.com.cn.

Host names pointing to 61.172.183.76: dns.bizcn.com and ns2.dns.com.cn.

Host names pointing to 61.240.129.114: dns.bizcn.com and ns1.dns.com.cn.

Mail Servers

qdcentury.com is handled by two mail servers: mxbiz1.qq.com and mxbiz2.qq.com.

qdcentury.com shares its mail server setup with other domains, including f-top.com, wuxitrust.com, microsolid.com.cn, uttox.com and chipreal.com.

The mail servers for qdcentury.com are shared with other domains, for instance nseledcloud.com, ymychn.com, tizennet.com, jingyid.com and shi-ming.com.

qdcentury.com - robtex.com

qdcentury.com

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