mx.coobook.jp - robtex.com
mx.coobook.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 153.122.206.114🇯🇵 AS131921153.122.192.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K. | ||||||
coobook.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 153.122.205.4🇯🇵 AS131921153.122.192.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K. | ||||||
| NS | ns2.namedserver.net ⭐ | ||||||
| NS | ns.namedserver.net | ||||||
| MX | mx.coobook.jp ⭐ | ||||||
| TXT | v=spf1 include:_spf.shared-server.net ~all | ||||||
| SOA | ns.namedserver.netroot@namedserver.net serial=2698653308 | ||||||
MX for
Same first word
Similar names
DNS History
2 records (1 active, 1 former)
●A153.122.206.1142026-03-26 → 2026-03-26 · 2 obs
○ 2016-09-05 06:13:48
● 2026-03-26 07:02:38
● 2026-03-26 07:02:38
○A211.13.204.42015-05-08 → 2016-09-05 · 3 obs
● 2015-05-08 02:54:18
● 2016-09-05 06:13:48
○ 2026-03-26 07:02:38
● 2016-09-05 06:13:48
○ 2026-03-26 07:02:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | e.dns.jp, g.dns.jp, c.dns.jp, a.dns.jp... | - |
| coobook.jp | ns2.namedserver.net, ns.namedserver.net | - |
✅ Authoritative Response
Server:157.120.112.212
NS records: ns2.namedserver.net, ns.namedserver.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for coobook.jp (unsigned zone)
⏱️ Timing
Total: 1420ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 153.122.206.114 |
Analysis
Mail Server Role
mx.coobook.jp serves as the mail server for coobook.jp.
IP Addresses
mx.coobook.jp points to an IP address: 153.122.206.114.
other host names include mx.salvus-kn.com, mx.best3.co.jp, mx.for-rest-lib.com, mx.sora-tnt.jp and mx.okikankou.com; they share IP numbers with mx.coobook.jp.