tech-cn.com - robtex.com
tech-cn.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=1777281676 | ||||||
Subdomains
mail.tech-cn.com |
Same first word
Similar names
DNS History
8 records (4 active, 4 former)
●NSns11.xincache.com2026-04-26 → 2026-04-27 · 3 obs
● 2026-04-26 19:34:12
● 2026-04-27 09:24:40
●NSns12.xincache.com2026-04-26 → 2026-04-27 · 3 obs
● 2026-04-26 19:34:12
● 2026-04-27 09:24:40
○NSns13.xincache.com2015-07-06 → 2017-01-27 · 4 obs
● 2017-01-27 22:39:32
○ 2026-04-26 19:34:12
○ 2026-04-27 09:24:40
○NSns14.xincache.com2015-07-06 → 2017-01-27 · 4 obs
● 2017-01-27 22:39:32
○ 2026-04-26 19:34:12
○ 2026-04-27 09:24:40
○MXhsmx3.cn4e.com2016-05-06 → 2017-01-27 · 5 obs
● 2016-05-06 18:19:24
● 2017-01-27 22:39:32
○ 2026-04-26 19:34:12
○ 2026-04-27 09:24:40
○MXmx140.cn4e.com2015-07-06 → 2017-01-27 · 4 obs
● 2017-01-27 22:39:32
○ 2026-04-26 19:34:12
○ 2026-04-27 09:24:40
●MXtechcn-com01b.mail.protection.outlook.com2026-04-26 → 2026-04-27 · 3 obs
● 2026-04-26 19:34:12
● 2026-04-27 09:24:40
●A139.224.209.1132026-04-26 → 2026-04-27 · 2 obs
● 2026-04-27 09:24:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| tech-cn.com | ns11.xincache.com, ns12.xincache.com | 12 records |
✅ Authoritative Response
Server:1.12.0.4
NS records: ns11.xincache.com, ns12.xincache.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for tech-cn.com (unsigned zone)
⏱️ Timing
Total: 166ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 139.224.209.113 |
| NS | 2 | ns12.xincache.com, ns11.xincache.com |
| MX | 1 | techcn-com01b.mail.protection.outlook.co |
| TXT | 1 | v=spf1 include:spf1.dm.aliyun.com -all |
| SOA | 1 | ns11.xincache.com ns12.xincache.com |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (ns11.xincache.com, ns11.xincache.com, ns11.xincache.com...)
Analysis
Hierarchy
mail.tech-cn.com has tech-cn.com as its parent.
IP Addresses
tech-cn.com maps to IP address 139.224.209.113.
Name Servers
Two name servers ns11.xincache.com and ns12.xincache.com are delegated to tech-cn.com.
tech-cn.com uses the same name server configuration as other domains, such as gxjc.net, mesedoll.com, luhang56.com, obaiyi.com and zdsss.com.
tech-cn.com at least partially shares name servers with other domains such as hqing.com, jmdongya.com, cnlanxing.com, haosucai.net and hbdwh.com.
These name servers are often used together with ns19.xincache.com, ns20.xincache.com, ns13.xincache.com, ns14.xincache.com, ns15.xincache.com, ns16.xincache.com, ce1.xincache.com, ce2.xincache.com, ns17.xincache.com and ns18.xincache.com.
Eight IP numbers for host names: ns11.xincache.com points to 2402:4e00:1470:2::e, 2402:4e00:1730::e, 1.12.0.4, 36.155.149.180, 112.80.181.45, 117.89.178.173, 125.94.59.210 and 129.211.176.209.
Seven IP numbers for host names: ns12.xincache.com points to 2402:4e00:111:fff::c, 1.12.0.1, 36.155.149.176, 112.80.181.111, 117.89.178.184, 129.211.176.239 and 163.177.5.23.
Mail Servers
tech-cn.com is handled by a single mail server, techcn-com01b.mail.protection.outlook.com.
techcn-com01b.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c927::1, 2a01:111:f403:c946::5, 2a01:111:f403:f905::3, 2a01:111:f403:f908::1, 52.101.10.1, 52.101.11.7, 52.101.41.21 and 52.101.42.18.