51sdk.com - robtex.com
51sdk.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 124.156.183.183🇭🇰 TENCENT-NET-AP-CN124.156.180.0/22 CMI (Customer Route) | ||||||
| NS | dns15.hichina.com ⭐ | ||||||
| A | 2408:4009:501::23🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.42🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.52🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.202🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.212🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.42🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.52🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.112🇨🇳 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 | 139.224.142.122🇨🇳 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 | dns16.hichina.com | ||||||
| A | 2408:4009:501::24🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.41🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.51🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.201🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.211🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.41🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.51🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.111🇨🇳 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 | 139.224.142.121🇨🇳 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 | dns15.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=1774987867 | ||||||
Subdomains
www.51sdk.com |
Same first word
Similar names
DNS History
5 records (3 active, 2 former)
○NSdns1.bizmoto.com2015-05-29 → 2017-03-19 · 4 obs
● 2017-03-19 23:21:52
○ 2026-02-19 19:48:00
○ 2026-03-31 20:20:38
●NSdns15.hichina.com2026-02-19 → 2026-03-31 · 3 obs
● 2026-02-19 19:48:00
● 2026-03-31 20:20:38
●NSdns16.hichina.com2026-02-19 → 2026-03-31 · 3 obs
● 2026-02-19 19:48:00
● 2026-03-31 20:20:38
●A124.156.183.1832026-02-19 → 2026-03-31 · 3 obs
● 2026-02-19 19:48:00
● 2026-03-31 20:20:38
○A61.241.130.842015-05-29 → 2017-03-19 · 4 obs
● 2017-03-19 23:21:52
○ 2026-02-19 19:48:00
○ 2026-03-31 20:20:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| 51sdk.com | dns15.hichina.com, dns16.hichina.com | 18 records |
✅ Authoritative Response
Server:139.224.142.112
NS records: dns15.hichina.com, dns16.hichina.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 51sdk.com (unsigned zone)
⏱️ Timing
Total: 454ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 124.156.183.183 |
| NS | 2 | dns15.hichina.com, dns16.hichina.com |
| SOA | 1 | dns15.hichina.com hostmaster.hichina.com |
📌 Glue Records Collected
Total: 18
Out-of-bailiwick: 18 (dns15.hichina.com, dns15.hichina.com, dns15.hichina.com...)
Analysis
Hierarchy
The parent of www.51sdk.com is 51sdk.com.
IP Addresses
51sdk.com points to IP number: 124.156.183.183.
Other host names such as aibangban.com, www.psjcw.com, www.yuntibao.com, psjcw.com and www.51sdk.com share IPs with 51sdk.com.
Name Servers
51sdk.com is delegated to two name servers: dns15.hichina.com and dns16.hichina.com.
51sdk.com shares the same name server setup as hebyys.com, gubilu.com, anejx.com, kyjs68.com and meta-tex.com.cn.
51sdk.com at least partially shares name servers with other domains, for instance ctia.cn, spacecom.info, flysheet.cn, vetementspop.shop and lfyaping.com.
these name servers are commonly used with expirens3.hichina.com, expirens4.hichina.com, ns1.alidns.com and ns2.alidns.com.
Nine IP numbers per host:
dns15.hichina.com points to: 2408:4009:501::23, 39.96.153.42, 39.96.153.52, 47.118.199.202, 47.118.199.212, 120.76.107.42, 120.76.107.52, 139.224.142.112 and 139.224.142.122.
dns16.hichina.com points to: 2408:4009:501::24, 39.96.153.41, 39.96.153.51, 47.118.199.201, 47.118.199.211, 120.76.107.41, 120.76.107.51, 139.224.142.111 and 139.224.142.121.