ocrmath.com - dns.ninja
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=1783475611 | ||||||
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 → 2026-07-08 · 2 obs
● 2026-07-08 02:02:34
●MXhzmx02.mxmail.netease.com2026-03-27 → 2026-07-08 · 2 obs
● 2026-07-08 02:02:34
●A140.207.188.2242026-03-27 → 2026-07-08 · 2 obs
● 2026-07-08 02:02:34
●A180.163.29.382026-03-27 → 2026-07-08 · 2 obs
● 2026-07-08 02:02:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | f.gtld-servers.net, j.gtld-servers.net, e.gtld-servers.net, l.gtld-servers.net... | - |
| ocrmath.com | ns3.dnsv2.com, ns4.dnsv2.com | 15 records |
✅ Authoritative Response
Server:1.12.0.29
NS records: ns3.dnsv2.com, ns4.dnsv2.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ocrmath.com (unsigned zone)
⏱️ Timing
Total: 345ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 140.207.188.224, 180.163.29.38 |
| NS | 2 | ns3.dnsv2.com, ns4.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
The domain open.ocrmath.com falls under the parent ocrmath.com.
IP Addresses
ocrmath.com has two IP addresses: 140.207.188.224 and 180.163.29.38
52n.cc, zto.cn, webchinese.cn plus two other host names have IP numbers in common with ocrmath.com.
Name Servers
ocrmath.com uses two name servers for its delegation: ns3.dnsv2.com and ns4.dnsv2.com.
The name server configuration of ocrmath.com is shared with other domains, for instance yunbaokj.com, twinkler.cn, keyouyun.com and two others.
At least some of ocrmath.com's name servers are shared with other domains, for example kedaoi.cn, weiqiming.com, bsss.info and two more.
These name servers are often deployed together with the name servers f1g1ns1.dnspod.net, f1g1ns2.dnspod.net, billy.dnspod.net and hendecagon.dnspod.net.
Hosts with 8 IP addresses each:
Hostname ns3.dnsv2.com directs to 1.12.0.29, 1.13.76.55 and 111.13.203.55 along with 5 other IP addresses.
Hosts with 7 IP addresses each:
Hostname ns4.dnsv2.com directs to 1.12.0.30, 1.14.119.55 and 36.155.149.55 along with 4 other IP addresses.
Mail Servers
ocrmath.com uses two mail servers, hzmx01.mxmail.netease.com and hzmx02.mxmail.netease.com.
The mail server setup of ocrmath.com matches that of other domains such as zomax.com, yibeisafety.com, deao.com.cn and two others.
At least some of the mail servers used by ocrmath.com are shared with other domains: hubenergy.cn, zjnu.cn, yvek.com and two others among them.
Host names pointing to two IP addresses:
hzmx01.mxmail.netease.com directs traffic to 47.251.71.119 and 47.251.84.126.