core-mind.com - dns.ninja
core-mind.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 157.7.44.231🇯🇵 GMO-INTERNET157.7.40.0/21 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| PTR | users284.vip.heteml.jp | ||||||
| NS | core-mind.com ⭐ | ||||||
| A | 157.7.44.231🇯🇵 GMO-INTERNET157.7.40.0/21 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| PTR | users284.vip.heteml.jp | ||||||
| NS | dns01.muumuu-domain.com | ||||||
| A | 202.239.23.39🇯🇵 IDC202.239.23.0/24 Frontier Inc. | ||||||
| NS | dns02.muumuu-domain.com | ||||||
| A | 160.251.249.62🇯🇵 GMOOSK-NET160.251.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| MX | mx.hetemail.jp ⭐ | ||||||
| A | 157.7.189.1🇯🇵 GMO-INTERNET157.7.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| PTR | mx.heteml.jp | ||||||
| TXT | v=spf1 include:_spf.heteml.jp ~all | ||||||
| SOA | core-mind.compostmaster@core-mind.com serial=1755670563 | ||||||
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=1785628292 | ||||||
NS for
core-mind.com |
Same first word
core-mind.com |
Similar names
DNS History
8 records (5 active, 3 former)
●NScore-mind.com2015-07-01 → 2026-08-01 · 2 obs
● 2026-08-01 23:55:54
●NSdns01.muumuu-domain.com2015-07-01 → 2026-08-01 · 2 obs
● 2026-08-01 23:55:54
●NSdns02.muumuu-domain.com2015-07-01 → 2026-08-01 · 2 obs
● 2026-08-01 23:55:54
○MXmail16.heteml.jp2015-07-01 → 2017-05-13 · 4 obs
● 2017-05-13 10:09:04
○ 2026-04-01 20:51:32
○ 2026-08-01 23:55:54
●MXmx.hetemail.jp2026-04-01 → 2026-08-01 · 3 obs
● 2026-04-01 20:51:32
● 2026-08-01 23:55:54
○A157.7.188.2212015-11-07 → 2017-05-13 · 5 obs
● 2015-11-07 12:08:32
● 2017-05-13 10:09:04
○ 2026-04-01 20:51:32
○ 2026-08-01 23:55:54
●A157.7.44.2312026-04-01 → 2026-08-01 · 3 obs
● 2026-04-01 20:51:32
● 2026-08-01 23:55:54
○A210.188.214.2432015-07-01 → 2015-07-01 · 3 obs
○ 2015-11-07 12:08:32
○ 2026-08-01 23:55:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| core-mind.com | dns01.muumuu-domain.com, dns02.muumuu-domain.com | 2 records |
✅ Authoritative Response
Server:160.251.249.62
NS records: dns01.muumuu-domain.com, dns02.muumuu-domain.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for core-mind.com (unsigned zone)
⏱️ Timing
Total: 576ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 157.7.44.231 |
| NS | 2 | dns01.muumuu-domain.com, dns02.muumuu-domain.com |
| MX | 1 | mx.hetemail.jp (pri: 50) |
| TXT | 1 | v=spf1 include:_spf.heteml.jp ~all |
| SOA | 1 | core-mind.com postmaster.core-mind.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (dns01.muumuu-domain.com, dns02.muumuu-domain.com)
Analysis
Name Server Role
core-mind.com acts as a name server for core-mind.com, meaning it is self-referentially delegated.
dns01.muumuu-domain.com, dns02.muumuu-domain.com and core-mind.com are commonly seen together as name servers.
IP Addresses
core-mind.com resolves to one IP address: 157.7.44.231.
okamotoemi.com, mail.kenko-e.jp, hanacoto.com and two other host names share IP numbers with core-mind.com.
Name Servers
core-mind.com has three authoritative name servers: core-mind.com, dns01.muumuu-domain.com and dns02.muumuu-domain.com.
The name servers of core-mind.com overlap at least partially with those of other domains — among them chis.jp, yururi-seitai.com, imaginedesigndc.com and two more.
core-mind.com, dns01.muumuu-domain.com and dns02.muumuu-domain.com all have one IP address each — core-mind.com directs to 157.7.44.231, dns01.muumuu-domain.com directs to 202.239.23.39 and dns02.muumuu-domain.com directs to 160.251.249.62.
Mail Servers
Mail for core-mind.com is handled by a single mail server, mx.hetemail.jp.
core-mind.com uses an identical mail server configuration to several other domains — among them retus.co.jp, hoshi-naika.com, ato-z.net and two more.
core-mind.com has mail servers in common with other domains — for example mamonet.jp, spreadsound.net and nobeyamacyclocross.cc.
mx.hetemail.jp has exactly one IP number: 157.7.189.1.