cob-tech.com - robtex.com
cob-tech.com
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=1771291435 | ||||||
Same first word
cob-tech.com |
Similar names
DNS History
5 records (5 active, 0 former)
●NSdns3.hichina.com2026-03-11 → 2026-03-23 · 2 obs
● 2026-03-23 19:19:26
●NSdns4.hichina.com2026-03-11 → 2026-03-23 · 2 obs
● 2026-03-23 19:19:26
●MXmx1.qiye.aliyun.com2026-03-11 → 2026-03-23 · 2 obs
● 2026-03-23 19:19:26
●MXmx2.qiye.aliyun.com2026-03-11 → 2026-03-23 · 2 obs
● 2026-03-23 19:19:26
●MXmx3.qiye.aliyun.com2026-03-11 → 2026-03-23 · 2 obs
● 2026-03-23 19:19:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| cob-tech.com | dns3.hichina.com, dns4.hichina.com | 18 records |
✅ Authoritative Response
Server:120.76.107.43
NS records: dns3.hichina.com, dns4.hichina.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cob-tech.com (unsigned zone)
⏱️ Timing
Total: 759ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | dns4.hichina.com, dns3.hichina.com |
| MX | 3 | mx1.qiye.aliyun.com (pri: 5), mx2.qiye.aliyun.com (pri: 10)... |
| TXT | 1 | v=spf1 include:spf.qiye.aliyun.com -all |
| SOA | 1 | dns3.hichina.com hostmaster.hichina.com |
📌 Glue Records Collected
Total: 18
Out-of-bailiwick: 18 (dns3.hichina.com, dns3.hichina.com, dns3.hichina.com...)
Analysis
Name Servers
cob-tech.com's delegation uses two name servers: dns3.hichina.com and dns4.hichina.com.
cob-tech.com uses the same name server setup as other domains, such as 51amz.com, feiliu-tech.com.cn, spr-rem.com, fupusi.com and jtlp.cn.
cob-tech.com at least partially shares name servers with other domains, including jcex.com, 80890.cn, cdseo.org, this.cc and qichebiaozhi.com.
These name servers are often used with expirens3.hichina.com and expirens4.hichina.com.
Host names with nine IP numbers: The host name dns3.hichina.com points to 2408:4009:501::11, 39.96.153.43, 39.96.153.63, 47.118.199.203, 47.118.199.213, 120.76.107.43, 120.76.107.63, 139.224.142.113 and 139.224.142.123. The host name dns4.hichina.com points to 2408:4009:501::12, 39.96.153.44, 39.96.153.54, 47.118.199.204, 47.118.199.214, 120.76.107.44, 120.76.107.54, 139.224.142.114 and 139.224.142.124.
Mail Servers
Three mail servers handle cob-tech.com: mx1.qiye.aliyun.com, mx2.qiye.aliyun.com and mx3.qiye.aliyun.com.
cob-tech.com shares at least some mail servers with other domains, for example dp-law.cn, wolkercloud.com, bloopower.com, sd-daxing.com and 3dsolidify.com.
These mail servers are often used with mxn.mxhichina.com and mxw.mxhichina.com.
Host names with two IP numbers:
The host name mx3.qiye.aliyun.com points to 47.246.136.231 and 47.246.137.47.
Host names with one IP number:
The host names mx1.qiye.aliyun.com and mx2.qiye.aliyun.com point to 47.246.137.47 and 47.246.136.231 respectively.
Host names that point to 47.246.136.231: mx3.qiye.aliyun.com and mx2.qiye.aliyun.com.
Host names that point to 47.246.137.47: mx3.qiye.aliyun.com and mx1.qiye.aliyun.com.