www.sdlearningtech.cn - robtex.com
www.sdlearningtech.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 47.100.50.202🇨🇳 Alibaba-Cloud47.100.0.0/15 | ||||||
| NS | ns1.alidns.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 2408:4009:501::1🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.45🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.55🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.205🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.215🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.45🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.55🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.115🇨🇳 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 | 139.224.142.125🇨🇳 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 | ns2.alidns.com ⚠️ Not in parent delegation | ||||||
| A | 2408:4009:501::2🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.46🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.56🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.206🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.216🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.46🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.56🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.116🇨🇳 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 | 139.224.142.126🇨🇳 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, | ||||||
| SOA | ns1.alidns.comhostmaster@hichina.com 2026-01-12 #9 | ||||||
sdlearningtech.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 221.214.61.26🇨🇳 CHINA169-Backbone221.214.0.0/15 CNC Group CHINA169 Shandong Province Network | ||||||
| NS | dns29.hichina.com ⭐ | ||||||
| NS | dns30.hichina.com | ||||||
| MX | mxbiz1.qq.com ⭐ | ||||||
| MX | mxbiz2.qq.com(10) | ||||||
| SOA | dns29.hichina.comhostmaster@hichina.com 2026-01-12 #9 | ||||||
Same first word
Similar names
DNS History
3 records (3 active, 0 former)
●NSns1.alidns.com2026-03-11 → 2026-04-25 · 2 obs
● 2026-04-25 11:50:34
●NSns2.alidns.com2026-03-11 → 2026-04-25 · 2 obs
● 2026-04-25 11:50:34
●A47.100.50.2022026-03-11 → 2026-04-25 · 2 obs
● 2026-04-25 11:50:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| sdlearningtech.cn | dns29.hichina.com, dns30.hichina.com | - |
✅ Authoritative Response
Server:39.96.153.39
NS records: dns29.hichina.com, dns30.hichina.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sdlearningtech.cn (unsigned zone)
⏱️ Timing
Total: 4294ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 47.100.50.202 |
| NS | 2 | ns1.alidns.com, ns2.alidns.com |
| SOA | 1 | ns1.alidns.com hostmaster.hichina.com |
Analysis
IP Addresses
www.sdlearningtech.cn points to IP number: 47.100.50.202.
Name Servers
www.sdlearningtech.cn is delegated to two name servers: ns1.alidns.com and ns2.alidns.com.
www.sdlearningtech.cn shares the same name server setup as 1b891d2851020.beer, 91door.com, 1c418fa1410271.beer, foxmine.com and younet.com.
www.sdlearningtech.cn at least partially shares name servers with other domains, for instance maideyun.com, vedeoo.com, phe.cn, jyscnuthpr.net and doorgood.com.
These name servers are commonly used with ns7.alidns.com, ns8.alidns.com, dns17.hichina.com, dns18.hichina.com, dns15.hichina.com, dns16.hichina.com, dns31.hichina.com, dns32.hichina.com and dns3.hichina.com.
Nine IP numbers per host:
ns1.alidns.com points to: 2408:4009:501::1, 39.96.153.45, 39.96.153.55, 47.118.199.205, 47.118.199.215, 120.76.107.45, 120.76.107.55, 139.224.142.115 and 139.224.142.125.
ns2.alidns.com points to: 2408:4009:501::2, 39.96.153.46, 39.96.153.56, 47.118.199.206, 47.118.199.216, 120.76.107.46, 120.76.107.56, 139.224.142.116 and 139.224.142.126.