smtp.a-class-m.com - robtex.com
smtp.a-class-m.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 182.16.226.148🇯🇵 atworks182.16.224.0/21 A.T.WORKS,Inc. CIDR-block NO.2 | ||||||
| PTR | onx07.atw.ne.jp | ||||||
a-class-m.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 35.73.72.214🇯🇵 Amazon35.72.0.0/13 EC2 NRT prefix | ||||||
| NS | ns0.atw.jp ⭐ | ||||||
| NS | ns.dlsv.com ⚠️ Not in zone NS records | ||||||
| NS | ns1.atw.jp ⚠️ Not in parent delegation | ||||||
| NS | ns2.atw.jp ⚠️ Not in parent delegation | ||||||
| NS | ns2.dlsv.com ⚠️ Not in zone NS records | ||||||
| NS | ns3.atw.jp ⚠️ Not in parent delegation | ||||||
| NS | ns3.dlsv.com ⚠️ Not in zone NS records | ||||||
| MX | smtp.a-class-m.com ⭐ | ||||||
| TXT | v=spf1 +ip4:182.16.226.148 ~all | ||||||
| SOA | ns0.atw.jphostmaster@atw.jp 2024-07-29 #1 | ||||||
MX for
Same first word
Similar names
DNS History
2 records (1 active, 1 former)
●A182.16.226.1482026-03-07 → 2026-04-14 · 3 obs
○ 2017-01-28 20:31:12
● 2026-03-07 13:42:46
● 2026-04-14 04:43:06
● 2026-03-07 13:42:46
● 2026-04-14 04:43:06
○A203.183.28.832015-10-17 → 2017-01-28 · 4 obs
● 2015-10-17 06:35:00
● 2017-01-28 20:31:12
○ 2026-03-07 13:42:46
○ 2026-04-14 04:43:06
● 2017-01-28 20:31:12
○ 2026-03-07 13:42:46
○ 2026-04-14 04:43:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| a-class-m.com | ns3.dlsv.com, ns2.dlsv.com, ns.dlsv.com | 3 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 a-class-m.com (unsigned zone)
⏱️ Timing
Total: 718ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 182.16.226.148 |
📌 Glue Records Collected
Total: 3
Out-of-bailiwick: 3 (ns3.dlsv.com, ns2.dlsv.com, ns.dlsv.com)
Analysis
Mail Server Role
smtp.a-class-m.com functions as a mail server for a-class-m.com.
IP Addresses
smtp.a-class-m.com resolves to one IP number: 182.16.226.148.
other host names including horiespub.co.uk, reports.co.jp, systemnet-jp.com, www.soheepark.com and sejutu.com share IP numbers with smtp.a-class-m.com.