coremaster.net - dns.ninja
coremaster.net
net
| 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=1782117005 | ||||||
MX for
coremaster.net |
Subdomains
Same first word
Similar names
DNS History
15 records (7 active, 8 former)
●NSns1.xserver.jp2026-03-23 → 2026-06-22 · 3 obs
● 2026-03-23 18:47:36
● 2026-06-22 08:53:04
○NSns1626.ztomy.com2017-04-08 → 2017-04-08 · 4 obs
● 2017-04-08 20:29:46
○ 2026-03-23 18:47:36
○ 2026-06-22 08:53:04
●NSns2.xserver.jp2026-03-23 → 2026-06-22 · 3 obs
● 2026-03-23 18:47:36
● 2026-06-22 08:53:04
○NSns2626.ztomy.com2017-04-08 → 2017-04-08 · 4 obs
● 2017-04-08 20:29:46
○ 2026-03-23 18:47:36
○ 2026-06-22 08:53:04
●NSns3.xserver.jp2026-03-23 → 2026-06-22 · 3 obs
● 2026-03-23 18:47:36
● 2026-06-22 08:53:04
●NSns4.xserver.jp2026-03-23 → 2026-06-22 · 3 obs
● 2026-03-23 18:47:36
● 2026-06-22 08:53:04
○NSns47.worldnic.com2015-07-06 → 2016-03-29 · 4 obs
● 2016-03-29 04:37:04
○ 2017-04-08 20:29:46
○ 2026-06-22 08:53:04
○NSns48.worldnic.com2015-07-06 → 2016-03-29 · 4 obs
● 2016-03-29 04:37:04
○ 2017-04-08 20:29:46
○ 2026-06-22 08:53:04
●NSns5.xserver.jp2026-03-23 → 2026-06-22 · 3 obs
● 2026-03-23 18:47:36
● 2026-06-22 08:53:04
●MXcoremaster.net2026-03-23 → 2026-06-22 · 3 obs
● 2026-03-23 18:47:36
● 2026-06-22 08:53:04
○MXp.webcom.ctmail.com2015-11-13 → 2016-03-29 · 4 obs
● 2016-03-29 04:37:04
○ 2017-04-08 20:29:46
○ 2026-06-22 08:53:04
●A202.254.236.602026-03-23 → 2026-06-22 · 3 obs
● 2026-03-23 18:47:36
● 2026-06-22 08:53:04
○A204.11.56.482017-04-08 → 2017-04-08 · 4 obs
● 2017-04-08 20:29:46
○ 2026-03-23 18:47:36
○ 2026-06-22 08:53:04
○A206.188.192.1302015-07-06 → 2016-03-29 · 4 obs
● 2016-03-29 04:37:04
○ 2017-04-08 20:29:46
○ 2026-06-22 08:53:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| coremaster.net | ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp... | - |
✅ Authoritative Response
Server:157.112.182.220
NS records: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp, ns5.xserver.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for coremaster.net (unsigned zone)
⏱️ Timing
Total: 1935ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 202.254.236.60 |
| NS | 5 | ns1.xserver.jp, ns2.xserver.jp... |
| MX | 1 | coremaster.net (pri: 0) |
| TXT | 1 | v=spf1 +a:sv5059.xserver.jp +a:coremaste |
| SOA | 1 | ns1.xserver.jp root.xserver.jp |
Analysis
Hierarchy
ns1.coremaster.net and six.coremaster.net are both subdomains of coremaster.net.
Mail Server Role
coremaster.net is listed as a mail server for itself.
IP Addresses
coremaster.net resolves to one IP address: 202.254.236.60.
www.tokuyajyuken.co.jp, ichikuri.com, waiteku.com and two other host names share IP numbers with coremaster.net.
Name Servers
coremaster.net has five name servers, which are ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp and two others.
coremaster.net has at least partial name server overlap with other domains, such as kuromin.net, humans-y.com, kawazen.info and two others.
It is common to see these name servers used together with name servers ns4.xserver.jp and ns5.xserver.jp.
Hostnames that resolve to three IP addresses:
The hostname ns1.xserver.jp directs to 202.226.36.164, 202.226.36.170 and 202.226.36.246.
The hostname ns4.xserver.jp directs to 183.90.224.226, 183.90.224.230 and 202.226.39.247.
The hostname ns5.xserver.jp directs to 157.112.182.218, 157.112.182.220 and 202.226.37.247.
Hosts with just one IP address:
ns2.xserver.jp has the IP address 35.72.43.26.
ns3.xserver.jp has the IP address 202.226.36.247.
Mail Servers
Mail for coremaster.net is handled by one mail server — coremaster.net.
coremaster.net directs to just one IP number, 202.254.236.60.