mersenne.co.jp - robtex.com
mersenne.co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 138.3.212.67🇯🇵 ORACLE-OCI-31898138.3.208.0/20 Oracle Corporation | ||||||
| NS | ns0.kagoya.net ⭐ | ||||||
| A | 210.134.60.132🇯🇵 KAGOYAJAPAN210.134.48.0/20 KAGOYA Japan Inc. | ||||||
| PTR | ns0.kagoya.net | ||||||
| NS | ns.kagoya.net | ||||||
| A | 210.134.60.132🇯🇵 KAGOYAJAPAN210.134.48.0/20 KAGOYA Japan Inc. | ||||||
| PTR | ns0.kagoya.net | ||||||
| NS | ns1.kagoya.net | ||||||
| A | 203.142.206.132🇯🇵 KAGOYAJAPAN203.142.192.0/20 KAGOYA Japan Inc. | ||||||
| PTR | ns1.kagoya.net | ||||||
| MX | dmail.kagoya.net ⭐ | ||||||
| A | 210.134.51.6🇯🇵 KAGOYAJAPAN210.134.48.0/20 KAGOYA Japan Inc. | ||||||
| PTR | dmail01.kagoya.net | ||||||
| A | 210.134.51.7🇯🇵 KAGOYAJAPAN210.134.48.0/20 KAGOYA Japan Inc. | ||||||
| PTR | dmail02.kagoya.net | ||||||
| A | 210.134.58.253🇯🇵 KAGOYAJAPAN210.134.48.0/20 KAGOYA Japan Inc. | ||||||
| PTR | dmail03.kagoya.net | ||||||
| A | 210.134.58.254🇯🇵 KAGOYAJAPAN210.134.48.0/20 KAGOYA Japan Inc. | ||||||
| PTR | dmail04.kagoya.net | ||||||
| TXT | v=spf1 a:ag04.kagoya.net a:mss599.kagoya.net ~all | ||||||
| TXT | 202408151907030D97F61CD4890354BA2A98ACEFC9F0F3E7B7B76C463926FC3B4650A39B913BFD | ||||||
| SOA | ns.kagoya.netroot@kagoya.net serial=2026010002 | ||||||
co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| TXT | co.jp. | ||||||
Subdomains
www.mersenne.co.jp |
Same first word
DNS History
5 records (5 active, 0 former)
●NSns.kagoya.net2026-02-25 → 2026-04-14 · 2 obs
● 2026-04-14 13:42:40
●NSns0.kagoya.net2026-02-25 → 2026-04-14 · 2 obs
● 2026-04-14 13:42:40
●NSns1.kagoya.net2026-02-25 → 2026-04-14 · 2 obs
● 2026-04-14 13:42:40
●MXdmail.kagoya.net2026-02-25 → 2026-04-14 · 2 obs
● 2026-04-14 13:42:40
●A138.3.212.672026-02-25 → 2026-04-14 · 2 obs
● 2026-04-14 13:42:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | c.dns.jp, b.dns.jp, a.dns.jp, f.dns.jp... | - |
| mersenne.co.jp | ns0.kagoya.net, ns1.kagoya.net | - |
✅ Authoritative Response
Server:203.142.206.132
NS records: ns0.kagoya.net, ns1.kagoya.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for mersenne.co.jp (unsigned zone)
⏱️ Timing
Total: 1092ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 138.3.212.67 |
| NS | 2 | ns1.kagoya.net, ns0.kagoya.net |
| MX | 1 | dmail.kagoya.net (pri: 10) |
| TXT | 2 | 202408151907030D97F61CD4890354BA2A98ACEF, v=spf1 a:ag04.kagoya.net a:mss599.kagoya |
| SOA | 1 | ns.kagoya.net root.kagoya.net |
Analysis
Hierarchy
The parent of www.mersenne.co.jp is mersenne.co.jp.
IP Addresses
mersenne.co.jp points to a single IP: 138.3.212.67.
Other host names, such as www.mersenne.co.jp, share IP numbers with mersenne.co.jp.
Name Servers
mersenne.co.jp is delegated to three name servers: ns0.kagoya.net, ns1.kagoya.net and ns.kagoya.net.
mersenne.co.jp partially shares name servers with other domains; examples include onlyone-sato.com, amouy.info, carigaku.mhlw.go.jp, kakisiti.co.jp and agri-ya.jp.
Host names with a single IP number
Host ns0.kagoya.net points to 210.134.60.132
Host ns1.kagoya.net points to 203.142.206.132
Host ns.kagoya.net points to 210.134.60.132
Host names pointing to 210.134.60.132: ns0.kagoya.net and ns.kagoya.net
Mail Servers
mersenne.co.jp is handled by a single mail server, dmail.kagoya.net.
mersenne.co.jp has the same mail server setup as other domains, including nishifunabashi-bbw.net, tokyospice.com, basscom.com, join-me.biz and idcomtools.com.
Some mail servers are shared between mersenne.co.jp and other domains, for example gregory.jp.
Host dmail.kagoya.net resolves to four IP numbers: 210.134.51.6, 210.134.51.7, 210.134.58.253 and 210.134.58.254.