coa-system.jp - robtex.com

coa-system.jp

DNSSEC⚠️ Not signed
A216.230.253.81🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US
PTRwebltw81.alpha-mail.jp
NSkotetsu.alpha-lt.net ⭐
A157.205.252.6🇯🇵 AICS157.205.0.0/16 PACNET (proxy-registered route object)
PTRamdns01.alpha-mail.jp
NSamdns03.alpha-mail.jp
A216.230.254.112🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US
PTRamdns03.alpha-mail.jp
NStsukuba.aics.ne.jp
A157.205.252.7🇯🇵 AICS157.205.0.0/16 PACNET (proxy-registered route object)
PTRamdns02.alpha-mail.jp
MXampub01.alpha-mail.net ⭐
A216.230.254.1🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US
PTRampub01.alpha-mail.net
MXampub02.alpha-mail.net ⭐
A216.230.254.2🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US
PTRampub02.alpha-mail.net
MXampub03.alpha-mail.net ⭐
A216.230.254.3🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US
PTRampub03.alpha-mail.net
MXampub04.alpha-mail.net(50)
A216.230.254.4🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US
PTRampub04.alpha-mail.net
TXTv=spf1 ip4:157.205.202.0/24 ip4:157.205.203.128/25 ip4:216.230.250.0/24 ip4:2...
SOAkotetsu.alpha-lt.netpostmaster@alpha-web.ne.jp 2025-12-12 #9

jp

DNSSEC🔒 Signed (DS record present)
NSz.dns.jp ⭐
NSa.dns.jp
NSb.dns.jp
NSc.dns.jp
NSd.dns.jp
NSe.dns.jp
NSf.dns.jp
NSg.dns.jp
NSh.dns.jp
SOAz.dns.jproot@dns.jp serial=1774904403

Same first word

coa-system.jp

Similar names

sysco-team.eu
asty-cosme.com
sysco-team.com

DNS History

9 records (8 active, 1 former)

20162017201820192020202120222023202420252026NSamdns03.alpha-mail.jpkotetsu.alpha-lt.nettsukuba.aics.ne.jpMXampub01.alpha-mail.netampub02.alpha-mail.netampub03.alpha-mail.netampub04.alpha-mail.netA216.230.253.81216.230.251.81
●NSamdns03.alpha-mail.jp2026-02-25 → 2026-03-30 · 3 obs
○ 2015-06-23 23:23:40
● 2026-02-25 10:19:50
● 2026-03-30 21:16:34
●NSkotetsu.alpha-lt.net2015-06-23 → 2026-03-30 · 2 obs
● 2015-06-23 23:23:40
● 2026-03-30 21:16:34
●NStsukuba.aics.ne.jp2015-06-23 → 2026-03-30 · 2 obs
● 2015-06-23 23:23:40
● 2026-03-30 21:16:34
●MXampub01.alpha-mail.net2015-06-23 → 2026-03-30 · 2 obs
● 2015-06-23 23:23:40
● 2026-03-30 21:16:34
●MXampub02.alpha-mail.net2015-06-23 → 2026-03-30 · 2 obs
● 2015-06-23 23:23:40
● 2026-03-30 21:16:34
●MXampub03.alpha-mail.net2015-06-23 → 2026-03-30 · 2 obs
● 2015-06-23 23:23:40
● 2026-03-30 21:16:34
●MXampub04.alpha-mail.net2019-12-26 → 2026-03-30 · 3 obs
○ 2015-06-23 23:23:40
● 2019-12-26 14:39:04
● 2026-03-30 21:16:34
○A216.230.251.812015-06-23 → 2019-12-26 · 4 obs
● 2015-06-23 23:23:40
● 2019-12-26 14:39:04
○ 2026-02-25 10:19:50
○ 2026-03-30 21:16:34
●A216.230.253.812026-02-25 → 2026-03-30 · 3 obs
○ 2019-12-26 14:39:04
● 2026-02-25 10:19:50
● 2026-03-30 21:16:34

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jph.dns.jp, d.dns.jp, b.dns.jp, f.dns.jp...-
coa-system.jptsukuba.aics.ne.jp, amdns03.alpha-mail.jp, kotetsu.alpha-lt.net1 record

✅ Authoritative Response

Server:157.205.252.7

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coa-system.jp (unsigned zone)

⏱️ Timing

Total: 1311ms | Queries: -

📄 Records

TypeCountSample Data
A1216.230.253.81
NS3tsukuba.aics.ne.jp, amdns03.alpha-mail.jp...
MX4ampub01.alpha-mail.net (pri: 10), ampub04.alpha-mail.net (pri: 50)...
TXT1v=spf1 ip4:157.205.202.0/24 ip4:157.205.
SOA1kotetsu.alpha-lt.net postmaster.alpha-we

📌 Glue Records Collected

Total: 1

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

Analysis

IP Addresses

coa-system.jp points to IP number 216.230.253.81.

For instance, other host names hysol.co.jp, gigasys.co.jp, higaind.jp, ajisaikai.com and ideamap.co.jp share IP numbers with coa-system.jp.

Name Servers

The delegation for coa-system.jp is handled by three name servers: amdns03.alpha-mail.jp, kotetsu.alpha-lt.net and tsukuba.aics.ne.jp.

coa-system.jp shares name servers with other domains at least partially, for example mdss.co.jp, piers.jp, ina-tecs.com, tatd-re.com and gyu.co.jp.

Host names with a single IP address: 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

coa-system.jp is handled by four mail servers: ampub01.alpha-mail.net, ampub02.alpha-mail.net, ampub03.alpha-mail.net and ampub04.alpha-mail.net.

coa-system.jp shares mail servers with other domains at least partially; for instance toyomasa.com, k-maruzen.com, sanwasp.co.jp, joei.co.jp and ivy-net.co.jp.

Host names with a single IP:

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