smtp.kasai21.com - robtex.com

smtp.kasai21.com

DNSSEC⚠️ Not signed
A182.16.226.147🇯🇵 atworks182.16.224.0/21 A.T.WORKS,Inc. CIDR-block NO.2
PTRonx06.atw.ne.jp

kasai21.com

DNSSEC⚠️ Not signed
A182.16.226.147🇯🇵 atworks182.16.224.0/21 A.T.WORKS,Inc. CIDR-block NO.2
NSns0.atw.jp ⭐
NSns.dlsv.com ⚠️ Not in zone NS records
NSns1.atw.jp ⚠️ Not in parent delegation
NSns2.atw.jp ⚠️ Not in parent delegation
NSns2.dlsv.com ⚠️ Not in zone NS records
NSns3.atw.jp ⚠️ Not in parent delegation
NSns3.dlsv.com ⚠️ Not in zone NS records
MXsmtp.kasai21.com ⭐
TXTv=spf1 +ip4:182.16.226.147 ~all
SOAns0.atw.jphostmaster@atw.jp 2020-07-15 #1

MX for

kasai21.com

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DNS History

2 records (1 active, 1 former)

20162017201820192020202120222023202420252026A182.16.226.147210.188.235.56
●A182.16.226.1472026-02-27 → 2026-04-23 · 3 obs
○ 2016-06-13 01:11:30
● 2026-02-27 15:12:00
● 2026-04-23 10:27:48
○A210.188.235.562015-08-01 → 2016-06-13 · 4 obs
● 2015-08-01 13:14:56
● 2016-06-13 01:11:30
○ 2026-02-27 15:12:00
○ 2026-04-23 10:27:48

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
kasai21.comns3.dlsv.com, ns2.dlsv.com, ns.dlsv.com3 records

✅ Authoritative Response

Server:182.16.226.193

NS records: ns3.dlsv.com, ns2.dlsv.com, ns.dlsv.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for kasai21.com (unsigned zone)

⏱️ Timing

Total: 728ms | Queries: -

📄 Records

TypeCountSample Data
A1182.16.226.147

📌 Glue Records Collected

Total: 3

Out-of-bailiwick: 3 (ns3.dlsv.com, ns2.dlsv.com, ns.dlsv.com)

Analysis

Mail Server Role

smtp.kasai21.com is the mail server for kasai21.com.

IP Addresses

smtp.kasai21.com maps to IP address 182.16.226.147.

Other host names, for instance smtp.acronet.co.jp, smtp.onx06.atw.ne.jp, smtp.sevenseas773.com, www.justcorp.co.jp and fdesign.co.jp share IP numbers with smtp.kasai21.com.