u87.jp - robtex.com
u87.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 202.229.135.54🇯🇵 InfoSphere202.229.128.0/17 INFOSPHERE | ||||||
| PTR | u87.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 | u87.jp ⭐ | ||||||
| A | 202.229.135.54🇯🇵 InfoSphere202.229.128.0/17 INFOSPHERE | ||||||
| PTR | u87.jp | ||||||
| TXT | v=spf1 include:fmx.etius.jp +ip4:202.229.134.2/32 +ip4:202.229.135.54/32 -all | ||||||
| SOA | ns3.sphere.ad.jpdns@sphere.ad.jp serial=1576034227 | ||||||
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=1785011402 | ||||||
PTR for
MX for
u87.jp |
Same first word
Similar names
8u7.cn |
7u8.su |
78u.me |
u78.top |
7u8.net |
7u8.de |
8u7.com |
7u8.ru |
78u.com |
87u.com |
87u.net |
7u8.com |
8u7.cc |
87u.cn |
87u.ru |
u78.cn |
78u.org |
7u8.cn |
8u7.net |
8u7.de |
u78.net |
87u.de |
u78.com |
u78.ru |
DNS History
4 records (4 active, 0 former)
●NSns3.sphere.ad.jp2015-07-23 → 2026-07-25 · 2 obs
● 2026-07-25 20:47:42
●NSns4.sphere.ad.jp2015-07-23 → 2026-07-25 · 2 obs
● 2026-07-25 20:47:42
●MXu87.jp2015-07-23 → 2026-07-25 · 2 obs
● 2026-07-25 20:47:42
●A202.229.135.542015-07-23 → 2026-07-25 · 2 obs
● 2026-07-25 20:47:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| u87.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 u87.jp (unsigned zone)
⏱️ Timing
Total: 1549ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 202.229.135.54 |
| NS | 2 | ns4.sphere.ad.jp, ns3.sphere.ad.jp |
| MX | 1 | u87.jp (pri: 10) |
| TXT | 1 | v=spf1 include:fmx.etius.jp +ip4:202.229 |
| SOA | 1 | ns3.sphere.ad.jp dns.sphere.ad.jp |
Analysis
Mail Server Role
The MX record for u87.jp points back to u87.jp — it is its own mail server.
IP Addresses
u87.jp directs to one IP number, which is 202.229.135.54.
Name Servers
u87.jp is delegated to two name servers: ns3.sphere.ad.jp and ns4.sphere.ad.jp.
u87.jp has the same name server delegation as a number of other domains, such as www.right-g.co.jp, nds.on.arena.ne.jp, c21timekan.com and two more.
There is an overlap in name servers between u87.jp and other domains, for example donbosco.jp, suidou.or.jp and bemax.co.jp
ns3.sphere.ad.jp resolves to 202.239.113.22. ns4.sphere.ad.jp resolves to 202.239.113.30. Both host names point to a single IP number.
Mail Servers
The MX record for u87.jp points to a single mail server: u87.jp.
u87.jp resolves to a single IP number: 202.229.135.54.