mail.pre21.jp - robtex.com

mail.pre21.jp

DNSSEC⚠️ Not signed
A183.90.242.31🇯🇵 XSERVER-AS183.90.240.0/20 XSERVER Inc.
PTRsv2130.xserver.jp

pre21.jp

DNSSEC⚠️ Not signed
A162.43.105.96🇯🇵 XSERVER-AS162.43.0.0/17 XSERVER Inc.
NSns1.xserver.jp ⭐
NSns2.xserver.jp
NSns3.xserver.jp
NSns4.xserver.jp
NSns5.xserver.jp
MXmail.pre21.jp ⭐
TXTv=spf1 +a:sv2130.xserver.jp +a:pre21.jp +mx include:spf.sender.xserver.jp ~all
SOAns1.xserver.jproot@sv0.xserver.jp serial=0
WOT: SAFE (50/100)
WOT: SAFE (49/100)

MX for

pre21.jp

Same first word

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DNS History

1 record (1 active, 0 former)

201820192020202120222023202420252026A183.90.242.31
●A183.90.242.312017-03-20 → 2026-04-14 · 2 obs
● 2017-03-20 16:48:16
● 2026-04-14 09:24:52

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpa.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...-
pre21.jpns5.xserver.jp, ns3.xserver.jp, ns1.xserver.jp, ns4.xserver.jp...11 records

✅ Authoritative Response

Server:202.226.36.246

NS records: ns5.xserver.jp, ns3.xserver.jp, ns1.xserver.jp, ns4.xserver.jp, ns2.xserver.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for pre21.jp (unsigned zone)

⏱️ Timing

Total: 770ms | Queries: -

📄 Records

TypeCountSample Data
A1183.90.242.31

📌 Glue Records Collected

Total: 11

Out-of-bailiwick: 11 (ns1.xserver.jp, ns1.xserver.jp, ns1.xserver.jp...)

Analysis

Mail Server Role

mail.pre21.jp serves as the mail server for pre21.jp.

IP Addresses

mail.pre21.jp resolves to a single IP address: 183.90.242.31.

Other host names including love-fukuen.com, mail.jspocc.com, www.bier-reise.net, xn--xgs782cxys.net and izene.co.jp share IP numbers with mail.pre21.jp.