crefus.jp - robtex.com
crefus.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 202.254.238.5🇯🇵 XSERVER-AS202.254.236.0/22 XSERVER Inc. | ||||||
| PTR | sv4.xbiz.ne.jp | ||||||
| NS | ns1.xbiz.ne.jp ⭐ | ||||||
| A | 157.112.182.247🇯🇵 XSERVER-AS157.112.176.0/21 XSERVER Inc. | ||||||
| PTR | ns1.xbiz.ne.jp | ||||||
| NS | ns2.xbiz.ne.jp | ||||||
| A | 35.76.79.244🇯🇵 Amazon35.72.0.0/13 EC2 NRT prefix | ||||||
| PTR | ns2.xbiz.ne.jp | ||||||
| NS | ns3.xbiz.ne.jp | ||||||
| A | 157.112.191.237🇯🇵 XSERVER-AS157.112.184.0/21 XSERVER Inc. | ||||||
| PTR | ns3.xbiz.ne.jp | ||||||
| MX | crefus.jp ⭐ | ||||||
| A | 202.254.238.5🇯🇵 XSERVER-AS202.254.236.0/22 XSERVER Inc. | ||||||
| PTR | sv4.xbiz.ne.jp | ||||||
| TXT | v=spf1 +a:sv4.xbiz.ne.jp +a:crefus.jp +mx include:spf.sender.xserver.jp inclu... | ||||||
| TXT | google-site-verification=IGvF0NymWghDhsudGn9-76_vxXK97pzs6gMbtLeYhoo | ||||||
| SOA | ns1.xbiz.ne.jproot@xbiz.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=1773558003 | ||||||
MX for
crefus.jp |
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.xbiz.ne.jp2026-03-15 → 2026-03-16 · 2 obs
● 2026-03-16 09:38:00
●NSns2.xbiz.ne.jp2026-03-15 → 2026-03-16 · 2 obs
● 2026-03-16 09:38:00
●NSns3.xbiz.ne.jp2026-03-15 → 2026-03-16 · 2 obs
● 2026-03-16 09:38:00
●MXcrefus.jp2026-03-15 → 2026-03-16 · 2 obs
● 2026-03-16 09:38:00
●A202.254.238.52026-03-15 → 2026-03-16 · 2 obs
● 2026-03-16 09:38:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| crefus.jp | ns1.xbiz.ne.jp, ns2.xbiz.ne.jp, ns3.xbiz.ne.jp | 3 records |
✅ Authoritative Response
Server: 157.112.191.237
NS records: ns1.xbiz.ne.jp, ns2.xbiz.ne.jp, ns3.xbiz.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for crefus.jp (unsigned zone)
⏱️ Timing
Total: 1200ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 202.254.238.5 |
| NS | 3 | ns1.xbiz.ne.jp, ns2.xbiz.ne.jp... |
| MX | 1 | crefus.jp (pri: 0) |
| TXT | 2 | google-site-verification=IGvF0NymWghDhsu, v=spf1 +a:sv4.xbiz.ne.jp +a:crefus.jp +m |
| SOA | 1 | ns1.xbiz.ne.jp root.xbiz.ne.jp |
📌 Glue Records Collected
Total: 3
Out-of-bailiwick: 3 (ns1.xbiz.ne.jp, ns2.xbiz.ne.jp, ns3.xbiz.ne.jp)
Analysis
Mail Server Role
For crefus.jp, the mail server is crefus.jp.
IP Addresses
crefus.jp resolves to one IP number: 202.254.238.5.
other host names including www.hotroadkaitori.com, hotroadkaitori.com, sassi-fujii.co.jp, muginowa.com and kitakami.org share IP numbers with crefus.jp.
Name Servers
crefus.jp is delegated to three name servers ns1.xbiz.ne.jp, ns2.xbiz.ne.jp and ns3.xbiz.ne.jp.
crefus.jp at least partially shares name servers with other domains, for instance kk-miyauchi.co.jp, pointdx.com, 1105.co.jp, k2-games.com and sohatsu.com.
Host names with one IP number: ns1.xbiz.ne.jp points to 157.112.182.247; ns2.xbiz.ne.jp points to 35.76.79.244; ns3.xbiz.ne.jp points to 157.112.191.237.
Mail Servers
crefus.jp is served by a single mail server, crefus.jp.
crefus.jp resolves to IP 202.254.238.5.