ai-school.jp - robtex.com
ai-school.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 111.89.139.47🇯🇵 InfoSphere111.89.0.0/16 INFOSPHERE | ||||||
| PTR | planexus.co.jp | ||||||
| NS | ns3.sphere.ad.jp ⭐ | ||||||
| A | 202.239.113.22🇯🇵 InfoSphere202.239.64.0/18 INFOSPHERE | ||||||
| PTR | ns3.sphere.ad.jp | ||||||
| NS | ns4.sphere.ad.jp | ||||||
| A | 202.239.113.30🇯🇵 InfoSphere202.239.64.0/18 INFOSPHERE | ||||||
| PTR | ns4.sphere.ad.jp | ||||||
| MX | ai-school.jp ⭐ | ||||||
| A | 111.89.139.47🇯🇵 InfoSphere111.89.0.0/16 INFOSPHERE | ||||||
| PTR | planexus.co.jp | ||||||
| TXT | v=spf1 include:fmx.etius.jp +ip4:111.89.139.47/32 +ip4:111.89.138.2/32 -all | ||||||
| SOA | ns3.sphere.ad.jpdns@sphere.ad.jp serial=1576033996 | ||||||
jp
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | z.dns.jp ⭐ | ||||||
| NS | a.dns.jp | ||||||
| NS | b.dns.jp | ||||||
| NS | c.dns.jp | ||||||
| NS | d.dns.jp | ||||||
| NS | e.dns.jp | ||||||
| NS | f.dns.jp | ||||||
| NS | g.dns.jp | ||||||
| NS | h.dns.jp | ||||||
| SOA | z.dns.jproot@dns.jp serial=1775328303 | ||||||
MX for
ai-school.jp |
Same first word
ai-school.net |
ai-school.jp |
DNS History
4 records (4 active, 0 former)
●NSns3.sphere.ad.jp2015-07-20 → 2026-04-04 · 2 obs
● 2026-04-04 20:00:12
●NSns4.sphere.ad.jp2015-07-20 → 2026-04-04 · 2 obs
● 2026-04-04 20:00:12
●MXai-school.jp2015-07-20 → 2026-04-04 · 2 obs
● 2026-04-04 20:00:12
●A111.89.139.472015-07-20 → 2026-04-04 · 2 obs
● 2026-04-04 20:00:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | b.dns.jp, a.dns.jp, f.dns.jp, c.dns.jp... | - |
| ai-school.jp | ns4.sphere.ad.jp, ns3.sphere.ad.jp | - |
✅ Authoritative Response
Server:202.239.113.30
NS records: ns4.sphere.ad.jp, ns3.sphere.ad.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ai-school.jp (unsigned zone)
⏱️ Timing
Total: 1673ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 111.89.139.47 |
| NS | 2 | ns3.sphere.ad.jp, ns4.sphere.ad.jp |
| MX | 1 | ai-school.jp (pri: 10) |
| TXT | 1 | v=spf1 include:fmx.etius.jp +ip4:111.89. |
| SOA | 1 | ns3.sphere.ad.jp dns.sphere.ad.jp |
Analysis
Mail Server Role
ai-school.jp serves as the mail server for ai-school.jp.
IP Addresses
ai-school.jp points to IP number 111.89.139.47.
Other host names, for instance, planexus.co.jp share IP numbers with ai-school.jp.
Name Servers
ai-school.jp is delegated to two name servers: ns3.sphere.ad.jp and ns4.sphere.ad.jp.
ai-school.jp uses the same name server setup as other domains such as coffee-wagen.com, www.p-ice.jp, sg29sse.arena.ne.jp, bansei-gp.com and yobou.net.
ai-school.jp shares name servers with other domains at least partially, for instance qse.jp and katotaro.com.
Host names with one IP number:
ns3.sphere.ad.jp points to: 202.239.113.22.
ns4.sphere.ad.jp points to: 202.239.113.30.
Mail Servers
ai-school.jp is handled by a single mail server, ai-school.jp.
ai-school.jp points to a single IP: 111.89.139.47.