system-u.com - robtex.com
system-u.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 210.150.254.122🇯🇵 InfoSphere210.150.0.0/16 INFOSPHERE | ||||||
| PTR | domainwww1.customer.ne.jp | ||||||
| NS | ns1.customer.ne.jp ⭐ | ||||||
| A | 2001:2c0:11:3::d01🇯🇵 InfoSphere2001:2c0::/35 INFOSPHERE | ||||||
| PTR | ns1.customer.ne.jp | ||||||
| A | 210.150.254.82🇯🇵 InfoSphere210.150.0.0/16 INFOSPHERE | ||||||
| PTR | ns1.customer.ne.jp | ||||||
| NS | ns2.customer.ne.jp | ||||||
| A | 2001:2c0:11:1::d02🇯🇵 InfoSphere2001:2c0::/35 INFOSPHERE | ||||||
| PTR | ns2.customer.ne.jp | ||||||
| A | 210.150.254.51🇯🇵 InfoSphere210.150.0.0/16 INFOSPHERE | ||||||
| PTR | ns2.customer.ne.jp | ||||||
| MX | domainmb.customer.ne.jp ⭐ | ||||||
| A | 202.239.87.84🇯🇵 InfoSphere202.239.64.0/18 INFOSPHERE | ||||||
| PTR | domainmb1.customer.ne.jp | ||||||
| A | 202.239.87.86🇯🇵 InfoSphere202.239.64.0/18 INFOSPHERE | ||||||
| PTR | domainmb3.customer.ne.jp | ||||||
| SOA | ns1.customer.ne.jpdns@sphere.ad.jp serial=1459722796 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1771291435 | ||||||
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSns1.customer.ne.jp2015-05-23 → 2026-03-23 · 2 obs
● 2026-03-23 19:38:24
●NSns2.customer.ne.jp2015-05-23 → 2026-03-23 · 2 obs
● 2026-03-23 19:38:24
●MXdomainmb.customer.ne.jp2015-05-23 → 2026-03-23 · 2 obs
● 2026-03-23 19:38:24
●A210.150.254.1222015-05-23 → 2026-03-23 · 2 obs
● 2026-03-23 19:38:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| system-u.com | ns2.customer.ne.jp, ns1.customer.ne.jp | - |
✅ Authoritative Response
Server:210.150.254.51
NS records: ns2.customer.ne.jp, ns1.customer.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for system-u.com (unsigned zone)
⏱️ Timing
Total: 1330ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 210.150.254.122 |
| NS | 2 | ns2.customer.ne.jp, ns1.customer.ne.jp |
| MX | 1 | domainmb.customer.ne.jp (pri: 10) |
| SOA | 1 | ns1.customer.ne.jp dns.sphere.ad.jp |
Analysis
IP Addresses
system-u.com points to a single IP number: 210.150.254.122.
Other host names, for instance ozunet.org, kasperskylab.jp, io-pro.com, takise.com and soundbum.org share IP numbers with system-u.com.
Name Servers
Delegation for system-u.com rests with two name servers, ns1.customer.ne.jp and ns2.customer.ne.jp.
system-u.com shares the same name server setup as other domains, including ab-road.jp, kiyu.net, tama-e.net, gquuuuuux.net and chikai.com.
Host names with two IP numbers: ns1.customer.ne.jp points to 2001:2c0:11:3::d01 and 210.150.254.82; ns2.customer.ne.jp points to 2001:2c0:11:1::d02 and 210.150.254.51.
Mail Servers
system-u.com is handled by a single mail server, domainmb.customer.ne.jp.
system-u.com uses the same mail server configuration as other domains, such as tnky.com, deltakern.com, ennist.com, t-ban.com and hoo-co.net.
domainmb.customer.ne.jp resolves to two IP numbers: 202.239.87.84 and 202.239.87.86.