k-fact.jp - robtex.com
k-fact.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 175.28.4.6🇯🇵 XSERVER-AS175.28.4.0/23 XSERVER Inc. | ||||||
| PTR | sv5.xtwo.ne.jp | ||||||
| NS | ns1.xtwo.ne.jp ⭐ | ||||||
| A | 175.28.4.232🇯🇵 XSERVER-AS175.28.4.0/23 XSERVER Inc. | ||||||
| PTR | ns1.xtwo.ne.jp | ||||||
| NS | ns2.xtwo.ne.jp | ||||||
| A | 202.226.39.251🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc. | ||||||
| PTR | ns2.xtwo.ne.jp | ||||||
| NS | ns3.xtwo.ne.jp | ||||||
| A | 202.226.37.251🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc. | ||||||
| PTR | ns3.xtwo.ne.jp | ||||||
| MX | k-fact.jp ⭐ | ||||||
| A | 175.28.4.6🇯🇵 XSERVER-AS175.28.4.0/23 XSERVER Inc. | ||||||
| PTR | sv5.xtwo.ne.jp | ||||||
| TXT | v=spf1 +a:sv5.xtwo.ne.jp +a:k-fact.jp +mx include:spf.sender.xserver.jp ~all | ||||||
| SOA | ns1.xtwo.ne.jproot@sv0.xtwo.ne.jp serial=0 | ||||||
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=1784970903 | ||||||
MX for
k-fact.jp |
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.xtwo.ne.jp2015-06-05 → 2026-07-25 · 2 obs
● 2026-07-25 09:53:38
●NSns2.xtwo.ne.jp2015-06-05 → 2026-07-25 · 2 obs
● 2026-07-25 09:53:38
●NSns3.xtwo.ne.jp2015-06-05 → 2026-07-25 · 2 obs
● 2026-07-25 09:53:38
●MXk-fact.jp2015-06-05 → 2026-07-25 · 2 obs
● 2026-07-25 09:53:38
●A175.28.4.62015-06-05 → 2026-07-25 · 2 obs
● 2026-07-25 09:53:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| k-fact.jp | ns1.xtwo.ne.jp, ns2.xtwo.ne.jp, ns3.xtwo.ne.jp | 3 records |
✅ Authoritative Response
Server:202.226.37.251
NS records: ns1.xtwo.ne.jp, ns2.xtwo.ne.jp, ns3.xtwo.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for k-fact.jp (unsigned zone)
⏱️ Timing
Total: 881ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 175.28.4.6 |
| NS | 3 | ns1.xtwo.ne.jp, ns3.xtwo.ne.jp... |
| MX | 1 | k-fact.jp (pri: 0) |
| TXT | 1 | v=spf1 +a:sv5.xtwo.ne.jp +a:k-fact.jp +m |
| SOA | 1 | ns1.xtwo.ne.jp root.sv0.xtwo.ne.jp |
📌 Glue Records Collected
Total: 3
Out-of-bailiwick: 3 (ns3.xtwo.ne.jp, ns2.xtwo.ne.jp, ns1.xtwo.ne.jp)
Analysis
Mail Server Role
The MX record for k-fact.jp points back to k-fact.jp — it is its own mail server.
IP Addresses
k-fact.jp directs to one IP number, which is 175.28.4.6.
Among the host names that share IP numbers with k-fact.jp are yuukenzai.com, threehigh.net, gohachi.net and two others.
Name Servers
Three name servers are authoritative for k-fact.jp: ns1.xtwo.ne.jp, ns2.xtwo.ne.jp and ns3.xtwo.ne.jp.
At least some of k-fact.jp's name servers are shared with other domains, for example omsorg.jp, s-k-g.jp, ozaroa.net and two more.
Three hostnames, one IP address apiece: ns1.xtwo.ne.jp resolves to 175.28.4.232, ns2.xtwo.ne.jp resolves to 202.226.39.251 and ns3.xtwo.ne.jp resolves to 202.226.37.251.
Mail Servers
The MX record for k-fact.jp points to a single mail server: k-fact.jp.
There is one IP number for k-fact.jp: 175.28.4.6.