mail.sper.jp - robtex.com

mail.sper.jp

DNSSEC⚠️ Not signed
A133.125.58.159🇯🇵 SAKURA-A133.125.0.0/16 (ISHIKARI) SAKURA Internet // EAST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka, Osaka 530-0011, Japan
PTRsv01.inext.co.jp

sper.jp

DNSSEC⚠️ Not signed
A133.125.58.159🇯🇵 SAKURA-A133.125.0.0/16 (ISHIKARI) SAKURA Internet // EAST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka, Osaka 530-0011, Japan
NSns01.inext.co.jp ⭐
NSns02.inext.co.jp
MXmail.sper.jp ⭐
TXTv=spf1 +a +mx +ip4:133.125.58.159 +ip4:153.126.151.72 ~all
TXTgoogle-site-verification=6bbLwSwNupwNfl2uYE8eOHxai-KbUV854yWnePZ05NA
SOAns01.inext.co.jproot@inext.co.jp serial=1

MX for

sper.jp

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DNS History

1 record (1 active, 0 former)

A133.125.58.159
●A133.125.58.1592026-02-21 → 2026-03-28 · 2 obs
● 2026-02-21 20:42:48
● 2026-03-28 12:23:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpd.dns.jp, h.dns.jp, f.dns.jp, e.dns.jp...15 records
sper.jpns01.inext.co.jp, ns02.inext.co.jp2 records

✅ Authoritative Response

Server:133.125.51.250

NS records: ns01.inext.co.jp, ns02.inext.co.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sper.jp (unsigned zone)

⏱️ Timing

Total: 784ms | Queries: -

📄 Records

TypeCountSample Data
A1133.125.58.159

📌 Glue Records Collected

Total: 17

In-bailiwick: 15 (h.dns.jp, g.dns.jp, f.dns.jp...)

Out-of-bailiwick: 2 (ns02.inext.co.jp, ns01.inext.co.jp)

Analysis

Mail Server Role

mail.sper.jp serves as a mail server for sper.jp.

IP Addresses

mail.sper.jp resolves to one IP number: 133.125.58.159.

Other host names, for instance mail.legarage.co.jp, mail.flexeg.co.jp, daccs.jp, mail.sakuratoishi.co.jp and at-call.com share IP numbers with mail.sper.jp.