WWW.RTSAK.COM - first-class.biz

Search for IP or hostnames:

first-class.biz checked at 2025-10-07T15:36:07.913Z 258ms 96/96/96 100% R:14

`first-class.biz`

NS	`ns-128.awsdns-16.com`
		A	2600:9000:5300:8000::1 ^{🇺🇸 Amazon}
			PTR	`ns-128.awsdns-16.com`
		A	205.251.192.128^{🇺🇸 Amazon}
			PTR	`ns-128.awsdns-16.com`
NS	`ns-933.awsdns-52.net`
		A	2600:9000:5303:a500::1 ^{🇺🇸 Amazon}
			PTR	`ns-933.awsdns-52.net`
		A	205.251.195.165^{🇺🇸 Amazon}
			PTR	`ns-933.awsdns-52.net`
NS	`ns-1228.awsdns-25.org`
		A	2600:9000:5304:cc00::1 ^{🇺🇸 Amazon}
			PTR	`ns-1228.awsdns-25.org`
		A	205.251.196.204^{🇺🇸 Amazon}
			PTR	`ns-1228.awsdns-25.org`
MX	`first-class.sakura.ne.jp`
		A	49.212.235.107^{🇯🇵 SAKURA internet AS9371}
			PTR	`www3397.sakura.ne.jp`
NS	`ns-1702.awsdns-20.co.uk`
		A	2600:9000:5306:a600::1 ^{🇺🇸 Amazon}
			PTR	`ns-1702.awsdns-20.co.uk`
		A	205.251.198.166^{🇺🇸 Amazon}
			PTR	`ns-1702.awsdns-20.co.uk`
A	13.158.66.145^{🇺🇸 Amazon}
		PTR	`ec2-13-158-66-145.ap-northeast-1.compute.amazonaws.com`
A	18.178.170.42^{🇯🇵 Amazon}
		PTR	`ec2-18-178-170-42.ap-northeast-1.compute.amazonaws.com`

first-class.biz points to two IP numbers: 13.158.66.145 and 18.178.170.42.

Other host names such as kankyo-es.jp, kyk-partners.com, gensukeya.com, aotokikaku.com and t-landscape.jp share IPs with first-class.biz.

first-class.biz at least partially shares name servers with other domains, for instance psyccases.org, crushcoasterthegame.com, techarty.us, oscarvote.com and clarus-live.com.

Host names with two IP numbers: ns-128.awsdns-16.com points to 2600:9000:5300:8000::1 and 205.251.192.128; ns-933.awsdns-52.net points to 2600:9000:5303:a500::1 and 205.251.195.165; ns-1228.awsdns-25.org points to 2600:9000:5304:cc00::1 and 205.251.196.204; ns-1702.awsdns-20.co.uk points to 2600:9000:5306:a600::1 and 205.251.198.166.

first-class.biz is handled by a single mail server, first-class.sakura.ne.jp.

The mail server setup for first-class.biz mirrors that of other domains, for instance first-class.sakura.ne.jp.

dbq