k2ks.jp - robtex.com
k2ks.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 124.146.201.23🇯🇵 InfoSphere124.146.128.0/17 INFOSPHERE | ||||||
| PTR | k2ks.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 | k2ks.jp ⭐ | ||||||
| A | 124.146.201.23🇯🇵 InfoSphere124.146.128.0/17 INFOSPHERE | ||||||
| PTR | k2ks.jp | ||||||
| TXT | v=spf1 include:fmx.etius.jp +ip4:124.146.201.2/32 +ip4:124.146.201.23/32 -all | ||||||
| SOA | ns3.sphere.ad.jpdns@sphere.ad.jp serial=1576034118 | ||||||
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=1783755003 | ||||||
PTR for
MX for
k2ks.jp |
Same first word
k2ks.jp |
Similar names
DNS History
4 records (4 active, 0 former)
●NSns3.sphere.ad.jp2026-05-09 → 2026-07-11 · 2 obs
● 2026-07-11 07:55:46
●NSns4.sphere.ad.jp2026-05-09 → 2026-07-11 · 2 obs
● 2026-07-11 07:55:46
●MXk2ks.jp2026-05-09 → 2026-07-11 · 2 obs
● 2026-07-11 07:55:46
●A124.146.201.232026-05-09 → 2026-07-11 · 2 obs
● 2026-07-11 07:55:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | h.dns.jp, c.dns.jp, d.dns.jp, g.dns.jp... | - |
| k2ks.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 k2ks.jp (unsigned zone)
⏱️ Timing
Total: 1423ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 124.146.201.23 |
| NS | 2 | ns4.sphere.ad.jp, ns3.sphere.ad.jp |
| MX | 1 | k2ks.jp (pri: 10) |
| TXT | 1 | v=spf1 include:fmx.etius.jp +ip4:124.146 |
| SOA | 1 | ns3.sphere.ad.jp dns.sphere.ad.jp |
Analysis
Mail Server Role
k2ks.jp is listed as a mail server for itself.
IP Addresses
k2ks.jp resolves to one IP address: 124.146.201.23.
Name Servers
DNS delegation for k2ks.jp points to two name servers: ns3.sphere.ad.jp and ns4.sphere.ad.jp.
k2ks.jp uses the same name servers as several other domains — among them www.officepolaris.co.jp, jcdm.go.jp, sub96.75.136.210.in-addr.arpa and two more.
k2ks.jp has partial name server overlap with other domains, including sgv.co.jp.
Each of ns3.sphere.ad.jp and ns4.sphere.ad.jp has one IP address: ns3.sphere.ad.jp uses 202.239.113.22 and ns4.sphere.ad.jp uses 202.239.113.30.
Mail Servers
Mail for k2ks.jp is handled by one mail server — k2ks.jp.
k2ks.jp has exactly one IP number: 124.146.201.23.