mx.cob.jp - robtex.com
mx.cob.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 153.122.206.94🇯🇵 AS131921153.122.192.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K. | ||||||
cob.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 153.122.205.52🇯🇵 AS131921153.122.192.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K. | ||||||
| NS | cob.jp ⭐ | ||||||
| NS | dnss10.so-net.ne.jp | ||||||
| NS | dnss11.so-net.ne.jp | ||||||
| MX | mx.cob.jp ⭐ | ||||||
| TXT | v=spf1 include:_spf.shared-server.net +mx ~all | ||||||
| SOA | cob.jphostmaster@cob.jp serial=2602171610 | ||||||
WOT: SAFE (65/100)
MX for
Same first word
Similar names
DNS History
2 records (1 active, 1 former)
●A153.122.206.942026-05-15 → 2026-05-15 · 3 obs
○ 2016-12-19 12:29:44
● 2026-05-15 02:44:26
● 2026-05-15 09:17:52
● 2026-05-15 02:44:26
● 2026-05-15 09:17:52
○A211.13.204.142016-01-14 → 2016-12-19 · 4 obs
● 2016-01-14 06:20:24
● 2016-12-19 12:29:44
○ 2026-05-15 02:44:26
○ 2026-05-15 09:17:52
● 2016-12-19 12:29:44
○ 2026-05-15 02:44:26
○ 2026-05-15 09:17:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| cob.jp | dnss10.so-net.ne.jp, dnss11.so-net.ne.jp | - |
✅ Authoritative Response
Server:210.139.255.1
NS records: dnss10.so-net.ne.jp, dnss11.so-net.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cob.jp (unsigned zone)
⏱️ Timing
Total: 2289ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 153.122.206.94 |
Analysis
Mail Server Role
mx.cob.jp serves as the mail server for cob.jp.
IP Addresses
mx.cob.jp points to an IP address: 153.122.206.94.
other host names include mx.itpc.org, mx.bunkoh.com, mx.esthe-ohana.com, mx.takatsune.org and mx.nakamura.minato.tokyo.jp; they share IP numbers with mx.cob.jp.