simplex-m.co.jp - robtex.com

simplex-m.co.jp

DNSSEC⚠️ Not signed
A210.239.70.253🇯🇵 IDC210.239.64.0/21 Frontier Inc.
PTRclx02.atw.ne.jp
NSns0.atw.jp ⭐
A182.16.226.200🇯🇵 atworks182.16.224.0/21 A.T.WORKS,Inc. CIDR-block NO.2
PTRns0.atw.jp
NSns.dlsv.com ⚠️ Not in zone NS records
A210.236.247.71🇯🇵 IDC210.236.240.0/20 Frontier Inc.
NSns1.atw.jp ⚠️ Not in parent delegation
A210.236.247.71🇯🇵 IDC210.236.240.0/20 Frontier Inc.
NSns2.atw.jp ⚠️ Not in parent delegation
A219.99.220.242🇯🇵 NSK219.99.192.0/19 Co.,Ltd. 2-1,Minami-cho,Kanazawa-shi,Ishikawa,920-8769
PTRns2.atw.jp
NSns2.dlsv.com ⚠️ Not in zone NS records
A219.99.220.242🇯🇵 NSK219.99.192.0/19 Co.,Ltd. 2-1,Minami-cho,Kanazawa-shi,Ishikawa,920-8769
PTRns2.atw.jp
NSns3.atw.jp ⚠️ Not in parent delegation
A182.16.226.193🇯🇵 atworks182.16.224.0/21 A.T.WORKS,Inc. CIDR-block NO.2
PTRns3.atw.jp
NSns3.dlsv.com ⚠️ Not in zone NS records
A182.16.226.193🇯🇵 atworks182.16.224.0/21 A.T.WORKS,Inc. CIDR-block NO.2
PTRns3.atw.jp
MXsmtp.simplex-m.co.jp ⭐
A210.239.70.253🇯🇵 IDC210.239.64.0/21 Frontier Inc.
PTRclx02.atw.ne.jp
TXTv=spf1 +ip4:210.239.70.253 ~all
SOAns0.atw.jphostmaster@atw.jp 2025-03-18 #1

co.jp

DNSSEC🔒 Signed (DS record present)
NSa.dns.jp
NSb.dns.jp
NSc.dns.jp
NSd.dns.jp
NSe.dns.jp
NSf.dns.jp
NSg.dns.jp
NSh.dns.jp
TXTco.jp.
WOT: SAFE (62/100)
WOT: SAFE (58/100)

Subdomains

smtp.simplex-m.co.jp

Same first word

simplex-m.co.jp

DNS History

11 records (9 active, 2 former)

20162017201820192020202120222023202420252026NSns.dlsv.comns0.atw.jpns1.atw.jpns2.atw.jpns2.dlsv.comns3.atw.jpns3.dlsv.comMXsmtp.simplex-m.co.jpA210.239.70.253202.234.10.102202.234.18.71
●NSns.dlsv.com2015-08-03 → 2026-03-01 · 2 obs
● 2015-08-03 20:23:24
● 2026-03-01 07:09:18
●NSns0.atw.jp2026-03-01 → 2026-03-01 · 3 obs
○ 2015-08-03 20:23:24
● 2026-03-01 07:09:16
● 2026-03-01 07:09:18
●NSns1.atw.jp2026-03-01 → 2026-03-01 · 3 obs
○ 2015-08-03 20:23:24
● 2026-03-01 07:09:16
● 2026-03-01 07:09:18
●NSns2.atw.jp2026-03-01 → 2026-03-01 · 3 obs
○ 2015-08-03 20:23:24
● 2026-03-01 07:09:16
● 2026-03-01 07:09:18
●NSns2.dlsv.com2015-08-03 → 2026-03-01 · 2 obs
● 2015-08-03 20:23:24
● 2026-03-01 07:09:18
●NSns3.atw.jp2026-03-01 → 2026-03-01 · 3 obs
○ 2015-08-03 20:23:24
● 2026-03-01 07:09:16
● 2026-03-01 07:09:18
●NSns3.dlsv.com2015-08-03 → 2026-03-01 · 2 obs
● 2015-08-03 20:23:24
● 2026-03-01 07:09:18
●MXsmtp.simplex-m.co.jp2015-08-03 → 2026-03-01 · 2 obs
● 2015-08-03 20:23:24
● 2026-03-01 07:09:18
○A202.234.10.1022018-06-23 → 2018-06-23 · 4 obs
○ 2017-02-03 11:21:50
● 2018-06-23 20:15:48
○ 2026-03-01 07:09:16
○ 2026-03-01 07:09:18
○A202.234.18.712015-08-03 → 2017-02-03 · 4 obs
● 2015-08-03 20:23:24
● 2017-02-03 11:21:50
○ 2018-06-23 20:15:48
○ 2026-03-01 07:09:18
●A210.239.70.2532026-03-01 → 2026-03-01 · 3 obs
○ 2018-06-23 20:15:48
● 2026-03-01 07:09:16
● 2026-03-01 07:09:18

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpa.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...-
simplex-m.co.jpns.dlsv.com, ns2.dlsv.com, ns3.dlsv.com-

✅ Authoritative Response

Server: 182.16.226.193

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for simplex-m.co.jp (unsigned zone)

⏱️ Timing

Total: 1346ms | Queries: -

📄 Records

TypeCountSample Data
A1210.239.70.253
NS3ns1.atw.jp, ns2.atw.jp...
MX1smtp.simplex-m.co.jp (pri: 10)
TXT1v=spf1 +ip4:210.239.70.253 ~all
SOA1ns0.atw.jp hostmaster.atw.jp

Analysis

Hierarchy

simplex-m.co.jp is the parent of smtp.simplex-m.co.jp.

IP Addresses

simplex-m.co.jp resolves to a single IP address: 210.239.70.253.

Other host names including smtp.kgm-grind.com, smtp.cityplan.co.jp, smtp.justinc.co.jp, smtp.rokuyosya.co.jp and smtp.fishltd.co.jp share IP numbers with simplex-m.co.jp.

Name Servers

simplex-m.co.jp is delegated to seven name servers: ns2.dlsv.com, ns3.dlsv.com, ns.dlsv.com, ns0.atw.jp, ns1.atw.jp, ns2.atw.jp and ns3.atw.jp.

simplex-m.co.jp at least partially shares name servers with other domains, including ramendatabank.com, nonaco.jp, ray-tech.co.jp, tochigi-ya.co.jp and fls-inc.co.jp.

Host names with one IP number:

ns2.dlsv.com points to 219.99.220.242

ns3.dlsv.com points to 182.16.226.193

ns.dlsv.com points to 210.236.247.71

ns0.atw.jp points to 182.16.226.200

ns1.atw.jp points to 210.236.247.71

ns2.atw.jp points to 219.99.220.242

ns3.atw.jp points to 182.16.226.193

Host names pointing to 219.99.220.242: ns2.dlsv.com and ns2.atw.jp

Host names pointing to 182.16.226.193: ns3.dlsv.com and ns3.atw.jp

Host names pointing to 210.236.247.71: ns.dlsv.com and ns1.atw.jp

Mail Servers

simplex-m.co.jp is handled by a single mail server, smtp.simplex-m.co.jp.

smtp.simplex-m.co.jp points to a single IP: 210.239.70.253.