mail.firstring.jp - robtex.com

mail.firstring.jp

DNSSEC⚠️ Not signed
A133.125.39.187🇯🇵 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
PTRhost302.bbsn.co.jp

firstring.jp

DNSSEC⚠️ Not signed
A133.125.39.187🇯🇵 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
NSnsw.tellmy.name ⭐
NSnsx.tellmy.name
MXmail.firstring.jp ⭐
TXTv=spf1 a mx ip4:133.125.39.187 ~all
SOAnsw.tellmy.nameroot@firstring.jp 2021-04-01 #2
WOT: SAFE (60/100)
WOT: SAFE (64/100)

MX for

firstring.jp

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DNS History

1 record (1 active, 0 former)

A133.125.39.187
●A133.125.39.1872026-04-25 → 2026-04-26 · 2 obs
● 2026-04-25 21:59:18
● 2026-04-26 02:43:52

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpc.dns.jp, h.dns.jp, a.dns.jp, d.dns.jp...-
firstring.jpnsx.tellmy.name, nsw.tellmy.name-

✅ Authoritative Response

Server:160.16.229.222

NS records: nsx.tellmy.name, nsw.tellmy.name

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for firstring.jp (unsigned zone)

⏱️ Timing

Total: 854ms | Queries: -

📄 Records

TypeCountSample Data
A1133.125.39.187

Analysis

Mail Server Role

mail.firstring.jp is the mail server for firstring.jp.

IP Addresses

mail.firstring.jp resolves to one IP number: 133.125.39.187.

other host names including innovation-brains.com, fantasista-japan.com, alpha-inn.com, mail.beat-ls.com and seikyodan.com share IP numbers with mail.firstring.jp.