CF1762373203282-tsm20251105083916

WWW.RTSAK.COM - smtp.firstcome.jp

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smtp.firstcome.jp checked at 2025-11-05T20:06:43.275Z 251ms 25/25/25 100% R:13

smtp.firstcome.jp

A140.227.16.79🇯🇵 NTT PC Communications (InfoSphere)
PTRv1400-079.mailsecure.jp

firstcome.jp

NS01.dnsv.jp
NS02.dnsv.jp
NS03.dnsv.jp
NS04.dnsv.jp
MXsmtp.firstcome.jp

MX for

Starts with same word

Starts similarily

AI analysis

smtp.firstcome.jp serves as a mail server for firstcome.jp.

smtp.firstcome.jp resolves to one IP number: 140.227.16.79.

Other host names, for example v1400-079.mailsecure.jp, share IP numbers with smtp.firstcome.jp.

Perform reverse DNS lookup as well as normal forward DNS. Check Autonomous System Numbers (ASNs) and BGP connections between Internet Service Providers.
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