ocrmath.com - robtex.com
ocrmath.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=1774777907 | ||||||
Subdomains
open.ocrmath.com |
Same first word
ocrmath.com |
Similar names
DNS History
6 records (6 active, 0 former)
●MXhzmx01.mxmail.netease.com2026-03-27 → 2026-03-29 · 2 obs
● 2026-03-29 10:03:58
●MXhzmx02.mxmail.netease.com2026-03-27 → 2026-03-29 · 2 obs
● 2026-03-29 10:03:58
●A140.207.188.2242026-03-27 → 2026-03-29 · 2 obs
● 2026-03-29 10:03:58
●A180.163.29.382026-03-27 → 2026-03-29 · 2 obs
● 2026-03-29 10:03:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| ocrmath.com | ns3.dnsv2.com, ns4.dnsv2.com | 15 records |
✅ Authoritative Response
Server:1.12.0.30
NS records: ns3.dnsv2.com, ns4.dnsv2.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ocrmath.com (unsigned zone)
⏱️ Timing
Total: 74ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 180.163.29.38, 140.207.188.224 |
| NS | 2 | ns4.dnsv2.com, ns3.dnsv2.com |
| MX | 2 | hzmx01.mxmail.netease.com (pri: 5), hzmx02.mxmail.netease.com (pri: 10) |
| TXT | 2 | v=spf1 include:spf.163.com -all, v=spf1 include:qcloudmail.com ~all |
| SOA | 1 | ns3.dnsv2.com level3dnsadmin.dnspod.com |
📌 Glue Records Collected
Total: 15
Out-of-bailiwick: 15 (ns3.dnsv2.com, ns3.dnsv2.com, ns3.dnsv2.com...)
Analysis
Hierarchy
ocrmath.com is the parent of open.ocrmath.com.
IP Addresses
ocrmath.com resolves to two IP numbers: 140.207.188.224 and 180.163.29.38.
other host names including 52n.cc, zto.cn, webchinese.cn, irootech.com and jiuquhe.com share IP numbers with ocrmath.com.
Name Servers
ocrmath.com is delegated to two name servers ns3.dnsv2.com and ns4.dnsv2.com.
ocrmath.com shares the same name server setup as other domains, for instance yunbaokj.com, ipzu.com, twinkler.cn, keyouyun.com and gokuaidian.com.
ocrmath.com at least partially shares name servers with other domains, for instance weiqiming.com, bsss.info, easyfan.info, zharev.com and sunmen.cn.
These name servers are commonly used alongside f1g1ns1.dnspod.net and f1g1ns2.dnspod.net.
Eight IP numbers for a host:
ns3.dnsv2.com points to: 2402:4e00:1470:2::12, 1.12.0.29, 1.13.76.55, 111.13.203.55, 117.135.128.155, 125.94.59.155, 163.177.5.55 and 220.196.136.55.
Seven IP numbers for a host:
ns4.dnsv2.com points to: 2402:4e00:111:fff::f, 1.12.0.30, 1.14.119.55, 36.155.149.55, 49.7.107.155, 101.227.168.55 and 124.64.205.155.
Mail Servers
Two mail servers handle ocrmath.com: hzmx01.mxmail.netease.com and hzmx02.mxmail.netease.com.
ocrmath.com shares the same mail server setup as other domains, for instance zomax.com, yibeisafety.com, deao.com.cn, aciplaw.com and cnniba.com.
ocrmath.com shares at least some mail servers with other domains, including zjnu.cn, yvek.com, qjgd.com and szdoe.com.
Host names with two IP numbers:
hzmx01.mxmail.netease.com points to 47.251.71.119 and 47.251.84.126
hzmx02.mxmail.netease.com points to 47.251.71.119 and 47.251.84.126
Host names pointing to 47.251.71.119: hzmx01.mxmail.netease.com and hzmx02.mxmail.netease.com
Host names pointing to 47.251.84.126: hzmx01.mxmail.netease.com and hzmx02.mxmail.netease.com