ub3.cn - robtex.com

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`ub3.cn`

DNSSEC	⚠️ Not signed
A	140.238.246.81^{🇮🇳 ORACLE-OCI-31898}
		PTR	`mail.aman.ng`
NS	`a.dnspod.com` ⭐
		A	43.130.172.75^{🇸🇬 TENCENT-NET-AP-CN}
			PTR	`ip-43-130-172-75.defastlink.net`
		A	43.134.249.74^{🇸🇬 TENCENT-NET-AP-CN}
			PTR	`ip-43-134-249-74.defastlink.net`
		A	101.227.168.75^{🇨🇳 CHINANET-SHANGHAI-MAN}
			PTR	`ip-101-227-168-75.defastlink.net`
		A	117.135.128.175^{🇨🇳 CHINAMOBILE-CN}
			PTR	`(root)`
NS	`b.dnspod.com`
		A	43.161.3.75^{🇮🇳 TENCENT-NET-AP-CN}
			PTR	`ip-43-161-3-75.defastlink.net`
		A	163.177.5.79^{🇨🇳 UNICOM-GuangZhou-IDC}
			PTR	`ip-163-177-5-79.defastlink.net`
		A	220.196.136.75^{🇨🇳 UNICOM-SHFT-IDC}
			PTR	`ip-220-196-136-75.defastlink.net`
NS	`c.dnspod.com`
		A	43.134.249.75^{🇸🇬 TENCENT-NET-AP-CN}
			PTR	`ip-43-134-249-75.defastlink.net`
		A	112.80.181.175^{🇨🇳 CHINA169-Backbone}
			PTR	`ip-112-80-181-175.defastlink.net`
		A	125.94.59.175^{🇨🇳 CHINA-TELECOM}
			PTR	`ip-125-94-59-175.defastlink.net`
MX	`mxbiz1.qq.com` ⭐
		A	203.205.147.218^{🇭🇰 TENCENT-NET-AP-CN}
		A	203.205.232.191^{🇭🇰 TENCENT-NET-AP-CN}
MX	`mxbiz2.qq.com`⁽¹⁰⁾
		A	203.205.232.191^{🇭🇰 TENCENT-NET-AP-CN}
SOA	`a.dnspod.com`domainadmin@dnspod.com serial=1695048371

`cn`

	DNSSEC	⚠️ Not signed
	NS	`a.dns.cn` ⭐
	NS	`b.dns.cn`
	NS	`c.dns.cn`
	NS	`d.dns.cn`
	NS	`e.dns.cn`
	NS	`ns.cernet.net`⚠️
	SOA	`a.dns.cn`root@cnnic.cn serial=2034456417

Same first word

ub3.cn

ub3.com

Similar names

bu3.eu

b3u.org

u3b.de

b3u.net

3bu.cc

bu3.cn

3ub.org

3ub.de

u3b.eu

bu3.nl

b3u.com

3ub.com

3bu.de

3ub.ir

3bu.org

3bu.com

bu3.ch

bu3.com

3bu.cn

3bu.net

bu3.de

DNS History

13 records (6 active, 7 former)

●NSa.dnspod.com2026-02-16 → 2026-02-16 · 3 obs

○ 2017-03-18 09:57:38
● 2026-02-16 22:01:44
● 2026-02-16 22:01:46

●NSb.dnspod.com2026-02-16 → 2026-02-16 · 3 obs

○ 2017-03-18 09:57:38
● 2026-02-16 22:01:44
● 2026-02-16 22:01:46

●NSc.dnspod.com2026-02-16 → 2026-02-16 · 3 obs

○ 2017-03-18 09:57:38
● 2026-02-16 22:01:44
● 2026-02-16 22:01:46

○NSdns1.iidns.com2015-08-13 → 2017-03-18 · 4 obs

● 2015-08-13 23:19:14
● 2017-03-18 09:57:38
○ 2026-02-16 22:01:44
○ 2026-02-16 22:01:46

○NSdns2.iidns.com2015-08-13 → 2016-07-10 · 4 obs

● 2015-08-13 23:19:14
● 2016-07-10 05:38:58
○ 2026-02-16 22:01:44
○ 2026-02-16 22:01:46

○NSdns3.iidns.com2015-08-13 → 2016-07-10 · 4 obs

● 2015-08-13 23:19:14
● 2016-07-10 05:38:58
○ 2026-02-16 22:01:44
○ 2026-02-16 22:01:46

○NSdns4.iidns.com2015-08-13 → 2016-07-10 · 4 obs

● 2015-08-13 23:19:14
● 2016-07-10 05:38:58
○ 2026-02-16 22:01:44
○ 2026-02-16 22:01:46

○NSdns5.iidns.com2015-08-13 → 2016-07-10 · 4 obs

● 2015-08-13 23:19:14
● 2016-07-10 05:38:58
○ 2026-02-16 22:01:44
○ 2026-02-16 22:01:46

○NSdns6.iidns.com2015-08-13 → 2016-07-10 · 4 obs

● 2015-08-13 23:19:14
● 2016-07-10 05:38:58
○ 2017-03-18 09:57:38
○ 2026-02-16 22:01:46

●MXmxbiz1.qq.com2026-02-16 → 2026-02-16 · 2 obs

● 2026-02-16 22:01:44
● 2026-02-16 22:01:46

●MXmxbiz2.qq.com2026-02-16 → 2026-02-16 · 2 obs

● 2026-02-16 22:01:44
● 2026-02-16 22:01:46

●A140.238.246.812026-02-16 → 2026-02-16 · 3 obs

○ 2015-08-13 23:19:14
● 2026-02-16 22:01:44
● 2026-02-16 22:01:46

○A173.236.168.312015-08-13 → 2015-08-13 · 3 obs

● 2015-08-13 23:19:14
○ 2026-02-16 22:01:44
○ 2026-02-16 22:01:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ub3.cn	a.dnspod.com, b.dnspod.com, c.dnspod.com	-

✅ Authoritative Response

Server: 112.80.181.175

NS records: a.dnspod.com, b.dnspod.com, c.dnspod.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ub3.cn (unsigned zone)

⏱️ Timing

Total: 636ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`140.238.246.81`
NS	3	`a.dnspod.com, b.dnspod.com...`
MX	2	`mxbiz1.qq.com (pri: 5), mxbiz2.qq.com (pri: 10)`
SOA	1	`a.dnspod.com domainadmin.dnspod.com`

AI analysis

ub3.cn points to an IP address: 140.238.246.81.

Other host names, for instance mail.aman.ng, share IP numbers with ub3.cn.

ub3.cn is delegated to three name servers a.dnspod.com, b.dnspod.com and c.dnspod.com.

ub3.cn at least partially shares name servers with other domains, for instance lfhchina.com, quietshalecompany.com, 91991.com, fatpoppy.com and baoyutang.com.

These name servers are commonly used alongside f1g1ns1.dnspod.net.

Host names with four IP numbers:

a.dnspod.com points to: 43.130.172.75, 43.134.249.74, 101.227.168.75 and 117.135.128.175.

Host names with three IP numbers:

b.dnspod.com points to: 43.161.3.75, 163.177.5.79 and 220.196.136.75.

c.dnspod.com points to: 43.134.249.75, 112.80.181.175 and 125.94.59.175.

ub3.cn is handled by two mail servers: mxbiz1.qq.com and mxbiz2.qq.com.

ub3.cn uses the same mail server setup as other domains, for instance szjswl.cn, dsmm.com, v2ex.cc, cnjynx.com and jmaxtech.com.

ub3.cn shares at least partially some mail servers with other domains, for instance sanmiu.com, denaircompressor.com, lenacz.com, momentare.com and zanpic.com.

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

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

Names that point to 203.205.232.191: mxbiz1.qq.com and mxbiz2.qq.com.