btclass.cn - robtex.com
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btclass.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 120.78.78.170🇨🇳 ALIBABA-CN-NET | ||||||
| NS | dns19.hichina.com ⭐ | ||||||
| A | 2408:4009:501::27🇨🇳 ALIBABA-CN-NET | ||||||
| A | 39.96.153.40🇨🇳 ALIBABA-CN-NET | ||||||
| A | 39.96.153.60🇨🇳 ALIBABA-CN-NET | ||||||
| A | 47.118.199.200🇨🇳 ALIBABA-CN-NET | ||||||
| A | 47.118.199.220🇨🇳 ALIBABA-CN-NET | ||||||
| A | 120.76.107.40🇨🇳 ALIBABA-CN-NET | ||||||
| A | 120.76.107.60🇨🇳 ALIBABA-CN-NET | ||||||
| A | 139.224.142.100🇨🇳 ALIBABA-CN-NET | ||||||
| A | 139.224.142.110🇨🇳 ALIBABA-CN-NET | ||||||
| NS | dns20.hichina.com | ||||||
| A | 2408:4009:501::28🇨🇳 ALIBABA-CN-NET | ||||||
| A | 39.96.153.38🇨🇳 ALIBABA-CN-NET | ||||||
| A | 39.96.153.61🇨🇳 ALIBABA-CN-NET | ||||||
| A | 47.118.199.198🇨🇳 ALIBABA-CN-NET | ||||||
| A | 47.118.199.222🇨🇳 ALIBABA-CN-NET | ||||||
| A | 120.76.107.38🇨🇳 ALIBABA-CN-NET | ||||||
| A | 120.76.107.61🇨🇳 ALIBABA-CN-NET | ||||||
| A | 139.224.142.98🇨🇳 ALIBABA-CN-NET | ||||||
| A | 139.224.142.108🇨🇳 ALIBABA-CN-NET | ||||||
| MX | mxbiz1.qq.com ⭐ | ||||||
| MX | mxbiz2.qq.com(10) | ||||||
| TXT | google-site-verification=mvuFOFKwgmqZLvakFe4KjSC_jDjwR-_e--O_tx0LrYo | ||||||
| SOA | dns19.hichina.comhostmaster@hichina.com 2026-01-09 #13 | ||||||
cn
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| 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.cnroot@cnnic.cn serial=2034413050 | ||||||
Up
Same first word
Similar names
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | e.dns.cn, c.dns.cn, b.dns.cn, a.dns.cn... | - |
| btclass.cn | dns19.hichina.com, dns20.hichina.com | - |
✅ Authoritative Response
Server: 120.76.107.40
NS records: dns19.hichina.com, dns20.hichina.com
🔒 DNSSEC Status
❌ Bogus (DNSSEC validation failed)
Validation error at btclass.cn: Error: DNS query timeout: 203.119.29.1 for DS btclass.cn
⏱️ Timing
Total: 4401ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 120.78.78.170 |
| NS | 2 | dns20.hichina.com, dns19.hichina.com |
| MX | 2 | mxbiz2.qq.com (pri: 10), mxbiz1.qq.com (pri: 5) |
| TXT | 1 | google-site-verification=mvuFOFKwgmqZLva |
| SOA | 1 | dns19.hichina.com hostmaster.hichina.com |
AI analysis
btclass.cn is a parent of www.btclass.cn and app-cdn.btclass.cn.
btclass.cn points to IP number 120.78.78.170.
Other host names for example btclass.com, www.bt6.club and bt6.club share IP numbers with btclass.cn.
btclass.cn is delegated to two name servers: dns19.hichina.com and dns20.hichina.com.
btclass.cn uses the same name server setup as other domains such as fly-tone.com, shuyuyoupin.com, aiinspur.com, huayuanjc.com and 0312.cn.
btclass.cn shares name servers with other domains at least partially, for example kao114.cn.
Host names with nine IP numbers:
dns19.hichina.com points to: 2408:4009:501::27, 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.
dns20.hichina.com points to: 2408:4009:501::28, 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.
Two mail servers mxbiz1.qq.com and mxbiz2.qq.com handle btclass.cn.
btclass.cn shares the same mail server setup as other domains, for instance fuyuncc.com, dfsljx.com, longwangyun.com, dsneko.com and hiifans.com.
btclass.cn shares mail servers with other domains at least partially; for instance jb100.com, gobyte.cn, haroyo.com, johp.cn and dmapv.com.