mail.ddef.jp - robtex.com

mail.ddef.jp

DNSSEC⚠️ Not signed
A133.18.246.169🇯🇵 KAGOYAJAPAN133.18.0.0/16 KAGOYA Japan Inc.
PTRcadmin.comdoors.co.jp

ddef.jp

DNSSEC⚠️ Not signed
A133.18.192.31🇯🇵 KAGOYAJAPAN133.18.0.0/16 KAGOYA Japan Inc.
NScomdoors.co.jp ⭐
NSdns1.comdoors.co.jp
NSdns2.comdoors.co.jp
NSdns3.comdoors.co.jp
MXmail.ddef.jp ⭐
TXTglobalsign-domain-verification=2b9rH2ScGol0VZWQYSHBSNVQXLiO2L3TyrroXxty3J
TXTv=spf1 include:spf.comdoors.co.jp ~all
SOAcomdoors.co.jproot@comdoors.co.jp 2026-04-01 #0
📈 Tranco rank: #775,083

MX for

ddef.jp

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DNS History

2 records (1 active, 1 former)

20162017201820192020202120222023202420252026A133.18.246.169115.30.5.28
○A115.30.5.282015-08-13 → 2016-07-03 · 4 obs
● 2015-08-13 02:50:22
● 2016-07-03 19:20:40
○ 2026-03-01 00:48:54
○ 2026-04-02 11:55:12
●A133.18.246.1692026-03-01 → 2026-04-02 · 3 obs
○ 2016-07-03 19:20:40
● 2026-03-01 00:48:54
● 2026-04-02 11:55:12

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpe.dns.jp, g.dns.jp, c.dns.jp, a.dns.jp...-
ddef.jpdns2.comdoors.co.jp, dns3.comdoors.co.jp, dns1.comdoors.co.jp3 records

✅ Authoritative Response

Server:133.18.192.31

NS records: dns2.comdoors.co.jp, dns3.comdoors.co.jp, dns1.comdoors.co.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ddef.jp (unsigned zone)

⏱️ Timing

Total: 878ms | Queries: -

📄 Records

TypeCountSample Data
A1133.18.246.169

📌 Glue Records Collected

Total: 3

Out-of-bailiwick: 3 (dns1.comdoors.co.jp, dns2.comdoors.co.jp, dns3.comdoors.co.jp)

Analysis

Mail Server Role

mail.ddef.jp serves as the mail server for ddef.jp.

IP Addresses

mail.ddef.jp points to a single IP: 133.18.246.169.

Other host names, for instance mail.jero.jp, mail.takamihiroyuki.jp, mail.maayasakamoto.jp, mail-new.onmyo.com and mail-new.comdoors.com share IP numbers with mail.ddef.jp.