`first-control.co.jp`

DNSSEC	⚠️ Not signed
A	216.230.250.134^{🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US}
		PTR	`wdxltw62.alpha-mail.jp`
NS	`kotetsu.alpha-lt.net` ⭐
		A	157.205.252.6^{🇯🇵 AICS157.205.0.0/16 PACNET (proxy-registered route object)}
			PTR	`amdns01.alpha-mail.jp`
NS	`amdns03.alpha-mail.jp`
		A	216.230.254.112^{🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US}
			PTR	`amdns03.alpha-mail.jp`
NS	`tsukuba.aics.ne.jp`
		A	157.205.252.7^{🇯🇵 AICS157.205.0.0/16 PACNET (proxy-registered route object)}
			PTR	`amdns02.alpha-mail.jp`
MX	`ampub01.alpha-mail.net` ⭐
		A	216.230.254.1^{🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US}
			PTR	`ampub01.alpha-mail.net`
MX	`ampub02.alpha-mail.net` ⭐
		A	216.230.254.2^{🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US}
			PTR	`ampub02.alpha-mail.net`
MX	`ampub03.alpha-mail.net` ⭐
		A	216.230.254.3^{🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US}
			PTR	`ampub03.alpha-mail.net`
MX	`ampub04.alpha-mail.net`⁽⁵⁰⁾
		A	216.230.254.4^{🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US}
			PTR	`ampub04.alpha-mail.net`
TXT	`v=spf1 ip4:157.205.202.0/24 ip4:157.205.203.128/25 ip4:216.230.250.0/24 ip4:2...`
SOA	`kotetsu.alpha-lt.net`postmaster@alpha-web.ne.jp 2023-07-26 #0

`co.jp`

	DNSSEC	⚠️ Not signed
	TXT	`co.jp.`

WOT: SAFE (58/100)

Same first word

first-control.co.jp

first-control.de

Similar names

control-first.com

DNS History

9 records (8 active, 1 former)

●NSamdns03.alpha-mail.jp2026-03-12 → 2026-04-01 · 3 obs

○ 2015-08-07 04:08:20
● 2026-03-12 20:31:24
● 2026-04-01 18:39:28

●NSkotetsu.alpha-lt.net2015-08-07 → 2026-04-01 · 2 obs

● 2015-08-07 04:08:20
● 2026-04-01 18:39:28

●NStsukuba.aics.ne.jp2015-08-07 → 2026-04-01 · 2 obs

● 2015-08-07 04:08:20
● 2026-04-01 18:39:28

●MXampub01.alpha-mail.net2015-08-07 → 2026-04-01 · 2 obs

● 2015-08-07 04:08:20
● 2026-04-01 18:39:28

●MXampub02.alpha-mail.net2015-08-07 → 2026-04-01 · 2 obs

● 2015-08-07 04:08:20
● 2026-04-01 18:39:28

●MXampub03.alpha-mail.net2015-08-07 → 2026-04-01 · 2 obs

● 2015-08-07 04:08:20
● 2026-04-01 18:39:28

●MXampub04.alpha-mail.net2018-12-10 → 2026-04-01 · 3 obs

○ 2015-08-07 04:08:20
● 2018-12-10 15:14:00
● 2026-04-01 18:39:28

●A216.230.250.1342026-03-12 → 2026-04-01 · 3 obs

○ 2018-12-10 15:14:00
● 2026-03-12 20:31:24
● 2026-04-01 18:39:28

○A216.230.250.1542015-08-07 → 2018-12-10 · 4 obs

● 2015-08-07 04:08:20
● 2018-12-10 15:14:00
○ 2026-03-12 20:31:24
○ 2026-04-01 18:39:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	d.dns.jp, f.dns.jp, b.dns.jp, c.dns.jp...	-
first-control.co.jp	kotetsu.alpha-lt.net, tsukuba.aics.ne.jp, amdns03.alpha-mail.jp	1 record

✅ Authoritative Response

Server:157.205.252.7

NS records: kotetsu.alpha-lt.net, tsukuba.aics.ne.jp, amdns03.alpha-mail.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for first-control.co.jp (unsigned zone)

⏱️ Timing

Total: 1718ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`216.230.250.134`
NS	3	`amdns03.alpha-mail.jp, tsukuba.aics.ne.jp...`
MX	4	`ampub01.alpha-mail.net (pri: 10), ampub02.alpha-mail.net (pri: 10)...`
TXT	1	`v=spf1 ip4:157.205.202.0/24 ip4:157.205.`
SOA	1	`kotetsu.alpha-lt.net postmaster.alpha-we`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (amdns03.alpha-mail.jp)

Analysis

IP Addresses

first-control.co.jp resolves to one IP number: 216.230.250.134.

other host names including zext.jp, wakou-s.co.jp, oks-web.co.jp, kyoueiseisaku.co.jp and kmrs.co.jp share IP numbers with first-control.co.jp.

Name Servers

first-control.co.jp is delegated to three name servers amdns03.alpha-mail.jp, kotetsu.alpha-lt.net and tsukuba.aics.ne.jp.

first-control.co.jp at least partially shares name servers with other domains, for instance skywalk.co.jp, oshima-kaikei.jp, so-ei.jp, alpha-lt.com and koube.co.jp.

Host names with one IP number: amdns03.alpha-mail.jp points to 216.230.254.112; kotetsu.alpha-lt.net points to 157.205.252.6; tsukuba.aics.ne.jp points to 157.205.252.7.

Mail Servers

Four mail servers handle first-control.co.jp: ampub01.alpha-mail.net, ampub02.alpha-mail.net, ampub03.alpha-mail.net and ampub04.alpha-mail.net.

first-control.co.jp shares some mail servers with other domains, at least partially, for instance imitex.co.jp, miyukikai.com, oshige-kaikei.com, zinai.jp and tritect.co.jp.

Host names with one IP number: ampub01.alpha-mail.net points to 216.230.254.1; ampub02.alpha-mail.net points to 216.230.254.2; ampub03.alpha-mail.net points to 216.230.254.3; ampub04.alpha-mail.net points to 216.230.254.4.

first-control.co.jp - robtex.com