51combo.com - robtex.com
51combo.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 47.129.19.210🇸🇬 Amazon47.128.0.0/14 EC2 SIN Prefix | ||||||
| PTR | ec2-47-129-19-210.ap-southeast-1.compute.amazonaws.com | ||||||
| NS | ns7.alidns.com ⭐ | ||||||
| A | 2408:4009:501::3🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.47🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.57🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.207🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.217🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.47🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.57🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.117🇨🇳 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 | 139.224.142.127🇨🇳 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 | ns8.alidns.com | ||||||
| A | 2408:4009:501::4🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.48🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.58🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.208🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.218🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.48🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.58🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.101🇨🇳 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 | 139.224.142.118🇨🇳 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, | ||||||
| MX | mx1.larksuite.com ⭐ | ||||||
| A | 18.139.153.173🇸🇬 Amazon18.138.0.0/15 EC2 SIN prefix | ||||||
| PTR | ec2-18-139-153-173.ap-southeast-1.compute.amazonaws.com | ||||||
| MX | mx2.larksuite.com(5) | ||||||
| A | 18.139.153.173🇸🇬 Amazon18.138.0.0/15 EC2 SIN prefix | ||||||
| PTR | ec2-18-139-153-173.ap-southeast-1.compute.amazonaws.com | ||||||
| MX | mx3.larksuite.com(10) | ||||||
| A | 18.139.153.173🇸🇬 Amazon18.138.0.0/15 EC2 SIN prefix | ||||||
| PTR | ec2-18-139-153-173.ap-southeast-1.compute.amazonaws.com | ||||||
| A | 101.126.58.223🇨🇳 VOLCANO-ENGINE101.126.56.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| A | 122.14.230.154🇨🇳 CHINAMOBILE-CN122.14.224.0/20 | ||||||
| TXT | _globalsign-domain-verification=wwe-ciSL-J8QZ2flY89OISTG4D1o1IcZA8D4I2xBnf | ||||||
| TXT | v=spf1 +include:spf.onlarksuite.com -all | ||||||
| TXT | verification-code-site-App_lark=iD0wSt9Ac57HVe79k4kG | ||||||
| SOA | ns7.alidns.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=1774638747 | ||||||
Same first word
51combo.com |
Similar names
DNS History
6 records (6 active, 0 former)
●NSns7.alidns.com2026-02-26 → 2026-03-27 · 2 obs
● 2026-03-27 19:21:16
●NSns8.alidns.com2026-02-26 → 2026-03-27 · 2 obs
● 2026-03-27 19:21:16
●MXmx1.larksuite.com2026-02-26 → 2026-03-27 · 2 obs
● 2026-03-27 19:21:16
●MXmx2.larksuite.com2026-02-26 → 2026-03-27 · 2 obs
● 2026-03-27 19:21:16
●MXmx3.larksuite.com2026-02-26 → 2026-03-27 · 2 obs
● 2026-03-27 19:21:16
●A47.129.19.2102026-02-26 → 2026-03-27 · 2 obs
● 2026-03-27 19:21:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | h.gtld-servers.net, g.gtld-servers.net, b.gtld-servers.net, m.gtld-servers.net... | - |
| 51combo.com | ns7.alidns.com, ns8.alidns.com | 18 records |
✅ Authoritative Response
Server:120.76.107.48
NS records: ns7.alidns.com, ns8.alidns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 51combo.com (unsigned zone)
⏱️ Timing
Total: 548ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 47.129.19.210 |
| NS | 2 | ns7.alidns.com, ns8.alidns.com |
| MX | 3 | mx1.larksuite.com (pri: 1), mx3.larksuite.com (pri: 10)... |
| TXT | 3 | _globalsign-domain-verification=wwe-ciSL, v=spf1 +include:spf.onlarksuite.com -all... |
| SOA | 1 | ns7.alidns.com hostmaster.hichina.com |
📌 Glue Records Collected
Total: 18
Out-of-bailiwick: 18 (ns7.alidns.com, ns7.alidns.com, ns7.alidns.com...)
Analysis
IP Addresses
51combo.com maps to IP address 47.129.19.210.
Other host names, for example, comboinvestment.com share IP numbers with 51combo.com.
Name Servers
Two name servers ns7.alidns.com and ns8.alidns.com are delegated to 51combo.com.
51combo.com uses the same name server configuration as other domains, such as d69aaac859.skin, 3dns.vip, 53fafefb9c0478db.com, 43b35b865a7e8b8c.com and tutudaily.com.
51combo.com at least partially shares name servers with other domains such as 0633auto.com, wheatgenomics.org, alltoyamajc.com, sdnfv.org and getipassrnv.xin.
these name servers are commonly used with expirens3.hichina.com, expirens4.hichina.com, ns1.alidns.com, ns2.alidns.com, dns7.hichina.com and dns8.hichina.com.
Two hosts with nine IPs each:
Host ns7.alidns.com points to 2408:4009:501::3, 39.96.153.47, 39.96.153.57, 47.118.199.207, 47.118.199.217, 120.76.107.47, 120.76.107.57, 139.224.142.117 and 139.224.142.127.
Host ns8.alidns.com points to 2408:4009:501::4, 39.96.153.48, 39.96.153.58, 47.118.199.208, 47.118.199.218, 120.76.107.48, 120.76.107.58, 139.224.142.101 and 139.224.142.118.
Mail Servers
51combo.com is handled by three mail servers: mx1.larksuite.com, mx2.larksuite.com and mx3.larksuite.com.
51combo.com shares mail servers with other domains at least in part, for instance alexischan.com, cpn.vn, luositan.com, sportscooker.com and ntun.cn.
Host names with three IP numbers
mx3.larksuite.com points to 18.139.153.173, 101.126.58.223 and 122.14.230.154
Host names with one IP number
mx1.larksuite.com points to 18.139.153.173
mx2.larksuite.com points to 18.139.153.173
Host names pointing to 18.139.153.173
mx3.larksuite.com, mx1.larksuite.com and mx2.larksuite.com point to 18.139.153.173