b3corp.jp - robtex.com
b3corp.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 116.80.12.120🇯🇵 InfoSphere116.80.0.0/16 INFOSPHERE | ||||||
| PTR | b3corp.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 | b3corp.jp ⭐ | ||||||
| A | 116.80.12.120🇯🇵 InfoSphere116.80.0.0/16 INFOSPHERE | ||||||
| PTR | b3corp.jp | ||||||
| TXT | v=spf1 include:fmx.etius.jp +ip4:116.80.12.2/32 +ip4:116.80.12.120/32 -all | ||||||
| SOA | ns3.sphere.ad.jpdns@sphere.ad.jp serial=1574929193 | ||||||
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=1774590303 | ||||||
PTR for
MX for
b3corp.jp |
Same first word
b3corp.jp |
Similar names
DNS History
7 records (4 active, 3 former)
○NSasns1.customer.ne.jp2015-06-23 → 2017-05-27 · 3 obs
● 2017-05-27 12:47:14
○ 2026-03-27 05:50:42
○NSasns2.customer.ne.jp2015-06-23 → 2017-05-27 · 3 obs
● 2017-05-27 12:47:14
○ 2026-03-27 05:50:42
●NSns3.sphere.ad.jp2026-03-27 → 2026-03-27 · 2 obs
● 2026-03-27 05:50:42
●NSns4.sphere.ad.jp2026-03-27 → 2026-03-27 · 2 obs
● 2026-03-27 05:50:42
●MXb3corp.jp2015-06-23 → 2026-03-27 · 2 obs
● 2026-03-27 05:50:42
●A116.80.12.1202026-03-27 → 2026-03-27 · 2 obs
● 2026-03-27 05:50:42
○A60.43.197.2442015-06-23 → 2017-05-27 · 3 obs
● 2017-05-27 12:47:14
○ 2026-03-27 05:50:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| b3corp.jp | ns3.sphere.ad.jp, ns4.sphere.ad.jp | - |
✅ Authoritative Response
Server:202.239.113.30
NS records: ns3.sphere.ad.jp, ns4.sphere.ad.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for b3corp.jp (unsigned zone)
⏱️ Timing
Total: 1567ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 116.80.12.120 |
| NS | 2 | ns3.sphere.ad.jp, ns4.sphere.ad.jp |
| MX | 1 | b3corp.jp (pri: 10) |
| TXT | 1 | v=spf1 include:fmx.etius.jp +ip4:116.80. |
| SOA | 1 | ns3.sphere.ad.jp dns.sphere.ad.jp |
Analysis
Mail Server Role
The mail server for b3corp.jp is b3corp.jp.
IP Addresses
b3corp.jp points to a single IP address: 116.80.12.120.
Name Servers
Two name servers ns3.sphere.ad.jp and ns4.sphere.ad.jp handle the delegation for b3corp.jp.
b3corp.jp shares the same name server setup as other domains, for example daishowa.co.jp, hirotacpa.com, vs5.pro.arena.ne.jp, jcpok.com and jus1jus1.co-site.jp.
b3corp.jp partially shares name servers with other domains, for example sukeneko.info and suredesigns.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
One mail server handles b3corp.jp; that server is b3corp.jp.
b3corp.jp points to a single IP number: 116.80.12.120.