u381.com - robtex.com
u381.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 103.230.136.6🇭🇰 CNSERVERSLLC103.230.136.0/22 CMI (Customer Route) | ||||||
| NS | ens11.bigwww.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 39.96.153.43🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.203🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| NS | ens12.bigwww.com ⚠️ Not in parent delegation | ||||||
| A | 120.76.107.43🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.113🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| NS | ns11.bigwww.com ⚠️ Not in zone NS records | ||||||
| A | 2408:4009:501::9🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.43🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.203🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| NS | ns12.bigwww.com ⚠️ Not in zone NS records | ||||||
| A | 2408:4009:501::10🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 120.76.107.43🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.113🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| NS | ns13.bigwww.com ⚠️ Not in zone NS records | ||||||
| A | 47.118.199.203🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| NS | ns14.bigwww.com ⚠️ Not in zone NS records | ||||||
| A | 139.224.142.113🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| NS | ns15.bigwww.com ⚠️ Not in zone NS records | ||||||
| A | 39.96.153.43🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| NS | ns16.bigwww.com ⚠️ Not in zone NS records | ||||||
| A | 120.76.107.43🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| MX | mail.sudu.cn ⭐ | ||||||
| SOA | ens11.bigwww.comhostmaster@hichina.com 2026-01-12 #9 | ||||||
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.netnstld@verisign-grs.com serial=1778690331 | ||||||
Subdomains
www.u381.com |
Same first word
u381.com |
Similar names
DNS History
16 records (10 active, 6 former)
●NSens11.bigwww.com2026-05-08 → 2026-05-13 · 3 obs
● 2026-05-08 15:42:48
● 2026-05-13 16:48:04
●NSens12.bigwww.com2026-05-08 → 2026-05-13 · 3 obs
● 2026-05-08 15:42:48
● 2026-05-13 16:48:04
●NSns11.bigwww.com2015-05-21 → 2026-05-13 · 5 obs
● 2015-12-24 20:41:14
○ 2016-09-25 05:45:06
● 2019-05-01 15:39:54
● 2026-05-13 16:48:04
●NSns12.bigwww.com2026-05-08 → 2026-05-13 · 3 obs
● 2026-05-08 15:42:48
● 2026-05-13 16:48:04
●NSns13.bigwww.com2026-05-08 → 2026-05-13 · 3 obs
● 2026-05-08 15:42:48
● 2026-05-13 16:48:04
●NSns14.bigwww.com2026-05-08 → 2026-05-13 · 3 obs
● 2026-05-08 15:42:48
● 2026-05-13 16:48:04
●NSns15.bigwww.com2026-05-08 → 2026-05-13 · 3 obs
● 2026-05-08 15:42:48
● 2026-05-13 16:48:04
●NSns16.bigwww.com2026-05-08 → 2026-05-13 · 3 obs
● 2026-05-08 15:42:48
● 2026-05-13 16:48:04
○NSwww.u381.com2016-09-25 → 2016-09-25 · 4 obs
● 2016-09-25 05:45:06
○ 2019-05-01 15:39:54
○ 2026-05-13 16:48:04
○MXio.bouncemx.com2016-09-25 → 2016-09-25 · 4 obs
● 2016-09-25 05:45:06
○ 2019-05-01 15:39:54
○ 2026-05-13 16:48:04
●MXmail.sudu.cn2015-05-21 → 2026-05-13 · 5 obs
● 2015-12-24 20:41:14
○ 2016-09-25 05:45:06
● 2019-05-01 15:39:54
● 2026-05-13 16:48:04
●A103.230.136.62019-05-01 → 2026-05-13 · 3 obs
● 2019-05-01 15:39:54
● 2026-05-13 16:48:04
○A113.10.247.2182015-05-21 → 2015-12-24 · 4 obs
● 2015-12-24 20:41:14
○ 2016-03-26 08:50:50
○ 2026-05-13 16:48:04
○A205.164.14.742016-03-26 → 2016-03-26 · 4 obs
● 2016-03-26 08:50:50
○ 2016-09-25 05:45:06
○ 2026-05-13 16:48:04
○A70.39.84.2282016-09-25 → 2016-09-25 · 4 obs
● 2016-09-25 05:45:06
○ 2019-05-01 15:39:54
○ 2026-05-13 16:48:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| u381.com | ns11.bigwww.com, ns12.bigwww.com, ns13.bigwww.com, ns14.bigwww.com... | 10 records |
✅ Authoritative Response
Server:47.118.199.203
NS records: ns11.bigwww.com, ns12.bigwww.com, ns13.bigwww.com, ns14.bigwww.com, ns15.bigwww.com, ns16.bigwww.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for u381.com (unsigned zone)
⏱️ Timing
Total: 4559ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 103.230.136.6 |
| NS | 2 | ens12.bigwww.com, ens11.bigwww.com |
| MX | 1 | mail.sudu.cn (pri: 10) |
| SOA | 1 | ens11.bigwww.com hostmaster.hichina.com |
📌 Glue Records Collected
Total: 10
Out-of-bailiwick: 10 (ns11.bigwww.com, ns11.bigwww.com, ns11.bigwww.com...)
Analysis
Hierarchy
The parent of www.u381.com is u381.com.
IP Addresses
u381.com points to an IP address: 103.230.136.6.
Other host names, for instance www.u381.com, share IP numbers with u381.com.
Name Servers
u381.com is delegated to eight name servers: ens11.bigwww.com, ens12.bigwww.com, ns11.bigwww.com, ns12.bigwww.com, ns13.bigwww.com, ns14.bigwww.com, ns15.bigwww.com and ns16.bigwww.com.
u381.com at least partially shares name servers with other domains, for instance huodehao.com, jinyiexport.com, zsaist.cn, hongfazhongji.com and hotelbooks.com.cn.
These name servers are commonly used with dns23.hichina.com and dns24.hichina.com.
Host names with three IP numbers
ns11.bigwww.com points to: 2408:4009:501::9, 39.96.153.43 and 47.118.199.203
ns12.bigwww.com points to: 2408:4009:501::10, 120.76.107.43 and 139.224.142.113
Host names with two IP numbers
ens11.bigwww.com points to: 39.96.153.43 and 47.118.199.203
ens12.bigwww.com points to: 120.76.107.43 and 139.224.142.113
Host names with one IP number
ns13.bigwww.com points to: 47.118.199.203
ns14.bigwww.com points to: 139.224.142.113
ns15.bigwww.com points to: 39.96.153.43
ns16.bigwww.com points to: 120.76.107.43
Host names that point to 39.96.153.43: ns11.bigwww.com, ens11.bigwww.com and ns15.bigwww.com
Host names that point to 47.118.199.203: ns11.bigwww.com, ens11.bigwww.com and ns13.bigwww.com
Host names that point to 120.76.107.43: ns12.bigwww.com, ens12.bigwww.com and ns16.bigwww.com
Host names that point to 139.224.142.113: ns12.bigwww.com, ens12.bigwww.com and ns14.bigwww.com
Mail Servers
u381.com is handled by a single mail server, mail.sudu.cn.
u381.com uses the same mail server setup as other domains, for instance calcuengine.com, tyxc.net, luanpa.net, loongsonclub.com and plxinxi.com.
u381.com shares some mail servers with other domains, including kjxc.org, gx03.com, viply.net and zhypbz.com.
these mail servers are commonly used alongside mxbiz1.qq.com and mxbiz2.qq.com.