mx.j-system21.com - robtex.com
mx.j-system21.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 153.122.206.94🇯🇵 AS131921153.122.192.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K. | ||||||
j-system21.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 153.122.205.50🇯🇵 AS131921153.122.192.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K. | ||||||
| NS | j-system21.com ⭐ | ||||||
| NS | dnss10.so-net.ne.jp | ||||||
| NS | dnss11.so-net.ne.jp | ||||||
| MX | mx.j-system21.com ⭐ | ||||||
| TXT | v=spf1 include:_spf.shared-server.net +mx ~all | ||||||
| SOA | j-system21.comhostmaster@j-system21.com serial=2602171610 | ||||||
MX for
Same first word
Similar names
xm.hk.cn |
xm.fj.cn |
xm.pl |
xm.vn.ua |
xm.house |
xm.mk |
xm.com |
xm.biz |
xm.media |
xm.fyi |
xm.pe |
xm.wtf |
xm.nl |
xm.app |
xm.cn |
xm.gov.cn |
xm.city |
xm.ca |
xm.ee |
xm.ae |
xm.lc |
xm.chat |
xm.life |
xm.net |
xm.cm |
mx.co.ua |
mx.al |
mx |
mx.org |
DNS History
2 records (1 active, 1 former)
●A153.122.206.942026-05-15 → 2026-05-15 · 3 obs
○ 2017-01-10 00:35:20
● 2026-05-15 02:53:02
● 2026-05-15 11:15:26
● 2026-05-15 02:53:02
● 2026-05-15 11:15:26
○A211.13.204.142017-01-10 → 2017-01-10 · 3 obs
● 2017-01-10 00:35:20
○ 2026-05-15 02:53:02
○ 2026-05-15 11:15:26
○ 2026-05-15 02:53:02
○ 2026-05-15 11:15:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| j-system21.com | dnss10.so-net.ne.jp, dnss11.so-net.ne.jp | - |
✅ Authoritative Response
Server:210.139.255.17
NS records: dnss10.so-net.ne.jp, dnss11.so-net.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for j-system21.com (unsigned zone)
⏱️ Timing
Total: 3323ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 153.122.206.94 |
Analysis
Mail Server Role
mx.j-system21.com is the mail server for j-system21.com.
IP Addresses
mx.j-system21.com points to a single IP number: 153.122.206.94.
other host names for instance mx.shoyozi.com, mx.nichome.jp, mx.meas.co.jp, mx.cho-sunok.com and mx.ccap.or.jp share IP numbers with mx.j-system21.com.