4u-mail.com - robtex.com
4u-mail.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | dns17.hichina.com ⭐ | ||||||
| A | 2408:4009:501::25🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.40🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.60🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.200🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.220🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.40🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.60🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.100🇨🇳 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, | ||||||
| A | 139.224.142.110🇨🇳 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 | dns18.hichina.com | ||||||
| A | 2408:4009:501::26🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.38🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.61🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.198🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.222🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.38🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.61🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.98🇨🇳 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, | ||||||
| A | 139.224.142.108🇨🇳 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, | ||||||
| MX | domain-us-1.cuiqiu.net ⭐ | ||||||
| A | 43.130.33.177🇺🇸 TENCENT-NET-AP-CN43.130.0.0/18 ACEVILLE PTE.LTD. 16 COLLYER QUAY 18-29 INCOME AT RAFFLES | ||||||
| A | 43.153.56.173🇺🇸 TENCENT-NET-AP-CN43.153.0.0/18 ACEVILLE PTE.LTD. 16 COLLYER QUAY 18-29 INCOME AT RAFFLES | ||||||
| A | 170.106.82.15🇺🇸 TENCENT-NET-AP-CN170.106.82.0/23 Proxy-registered route object | ||||||
| MX | domain-cn-1.cuiqiu.net(10) | ||||||
| A | 152.136.244.4🇨🇳 TENCENT-NET-AP152.136.192.0/18 CT BeiJing IDC | ||||||
| TXT | v=spf1 +include:domain-send.cuiqiu.net ~all | ||||||
| SOA | dns17.hichina.comhostmaster@hichina.com 2026-01-09 #13 | ||||||
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=1775657632 | ||||||
Same first word
DNS History
4 records (4 active, 0 former)
●NSdns17.hichina.com2026-03-09 → 2026-04-08 · 2 obs
● 2026-04-08 14:37:42
●NSdns18.hichina.com2026-03-09 → 2026-04-08 · 2 obs
● 2026-04-08 14:37:42
●MXdomain-cn-1.cuiqiu.net2026-03-09 → 2026-04-08 · 2 obs
● 2026-04-08 14:37:42
●MXdomain-us-1.cuiqiu.net2026-03-09 → 2026-04-08 · 2 obs
● 2026-04-08 14:37:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | c.gtld-servers.net, e.gtld-servers.net, a.gtld-servers.net, g.gtld-servers.net... | - |
| 4u-mail.com | dns17.hichina.com, dns18.hichina.com | 18 records |
✅ Authoritative Response
Server:120.76.107.40
NS records: dns17.hichina.com, dns18.hichina.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 4u-mail.com (unsigned zone)
⏱️ Timing
Total: 566ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | dns17.hichina.com, dns18.hichina.com |
| MX | 2 | domain-cn-1.cuiqiu.net (pri: 10), domain-us-1.cuiqiu.net (pri: 5) |
| TXT | 1 | v=spf1 +include:domain-send.cuiqiu.net ~ |
| SOA | 1 | dns17.hichina.com hostmaster.hichina.com |
📌 Glue Records Collected
Total: 18
Out-of-bailiwick: 18 (dns17.hichina.com, dns17.hichina.com, dns17.hichina.com...)
Analysis
Name Servers
4u-mail.com has two name servers: dns17.hichina.com and dns18.hichina.com.
4u-mail.com shares the same name server setup as other domains, for example golx.cn, xfal.top, yinongkeji.com, nlwtj.com and f0q.com.
4u-mail.com shares some name servers with other domains, for example kjmjw.com, dalianliqun.cn, sx55w.com, pfpfp.com and nan2.com.
These name servers are commonly used together with expirens3.hichina.com and expirens4.hichina.com.
Host names with nine IP numbers:
dns17.hichina.com points to 2408:4009:501::25, 39.96.153.40, 39.96.153.60, 47.118.199.200, 47.118.199.220, 120.76.107.40, 120.76.107.60, 139.224.142.100 and 139.224.142.110.
dns18.hichina.com points to 2408:4009:501::26, 39.96.153.38, 39.96.153.61, 47.118.199.198, 47.118.199.222, 120.76.107.38, 120.76.107.61, 139.224.142.98 and 139.224.142.108.
Mail Servers
4u-mail.com is served by two mail servers: domain-cn-1.cuiqiu.net and domain-us-1.cuiqiu.net.
4u-mail.com shares the mail server setup with other domains, for example yy99168.com, c2jie.com, wenwendang.com, harshrathiandco.com and j6cqhr4.top.
4u-mail.com shares some mail servers with other domains, at least partially; for instance laolv66.com, lovbrick.com, aisnp.cn, wpanlu.com and bestyw.com.
these mail servers are commonly used alongside the mail servers domain-us-2.cuiqiu.net.
Host names with three IP numbers:
domain-us-1.cuiqiu.net points to: 43.130.33.177, 43.153.56.173 and 170.106.82.15.
Host names with one IP number:
domain-cn-1.cuiqiu.net points to: 152.136.244.4.