fourbrain.jp - robtex.com
fourbrain.jp
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=1785677403 | ||||||
MX for
fourbrain.jp |
Same first word
Similar names
DNS History
11 records (7 active, 4 former)
○NSdns0.heteml.jp2015-08-20 → 2015-12-09 · 4 obs
● 2015-12-09 09:31:38
○ 2016-03-17 15:13:00
○ 2026-08-02 13:41:04
○NSdns1.heteml.jp2015-08-20 → 2015-12-09 · 4 obs
● 2015-12-09 09:31:38
○ 2016-03-17 15:13:00
○ 2026-08-02 13:41:04
●NSns1.xserver.jp2016-03-17 → 2026-08-02 · 3 obs
● 2016-03-17 15:13:00
● 2026-08-02 13:41:04
●NSns2.xserver.jp2016-03-17 → 2026-08-02 · 3 obs
● 2016-03-17 15:13:00
● 2026-08-02 13:41:04
●NSns3.xserver.jp2016-03-17 → 2026-08-02 · 3 obs
● 2016-03-17 15:13:00
● 2026-08-02 13:41:04
●NSns4.xserver.jp2016-03-17 → 2026-08-02 · 3 obs
● 2016-03-17 15:13:00
● 2026-08-02 13:41:04
●NSns5.xserver.jp2016-03-17 → 2026-08-02 · 3 obs
● 2016-03-17 15:13:00
● 2026-08-02 13:41:04
●MXfourbrain.jp2016-03-17 → 2026-08-02 · 3 obs
● 2016-03-17 15:13:00
● 2026-08-02 13:41:04
○MXmail45.heteml.jp2015-08-20 → 2015-12-09 · 4 obs
● 2015-12-09 09:31:38
○ 2016-03-17 15:13:00
○ 2026-08-02 13:41:04
●A157.112.176.302016-03-17 → 2026-08-02 · 3 obs
● 2016-03-17 15:13:00
● 2026-08-02 13:41:04
○A157.7.188.1292015-08-20 → 2015-12-09 · 4 obs
● 2015-12-09 09:31:38
○ 2016-03-17 15:13:00
○ 2026-08-02 13:41:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| fourbrain.jp | ns1.xserver.jp, ns4.xserver.jp, ns2.xserver.jp, ns3.xserver.jp... | 11 records |
✅ Authoritative Response
Server:157.112.182.220
NS records: ns1.xserver.jp, ns4.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns5.xserver.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for fourbrain.jp (unsigned zone)
⏱️ Timing
Total: 832ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 157.112.176.30 |
| NS | 5 | ns1.xserver.jp, ns3.xserver.jp... |
| MX | 1 | fourbrain.jp (pri: 0) |
| TXT | 2 | MS=ms49715438, v=spf1 +a:sv829.xserver.jp +a:fourbrain. |
| SOA | 1 | ns1.xserver.jp root.sv0.xserver.jp |
📌 Glue Records Collected
Total: 11
Out-of-bailiwick: 11 (ns5.xserver.jp, ns5.xserver.jp, ns5.xserver.jp...)
Analysis
Mail Server Role
fourbrain.jp is listed as a mail server for itself.
IP Addresses
fourbrain.jp resolves to one IP address: 157.112.176.30.
den-ka.biz, coccyx-fracture.com, e-hc.info and two other host names share IP numbers with fourbrain.jp.
Name Servers
fourbrain.jp has five name servers, which are ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp and two others.
fourbrain.jp shares at least some of its name servers with other domains, including mdhomes.jp, flipworks.jp, y-aba.or.jp and two others.
These name servers are frequently paired with the name servers ns5.xserver.jp and ns4.xserver.jp.
Hostnames that resolve to three IP addresses:
ns1.xserver.jp has IP addresses 202.226.36.164, 202.226.36.170 and 202.226.36.246.
ns4.xserver.jp has IP addresses 183.90.224.226, 183.90.224.230 and 202.226.39.247.
ns5.xserver.jp has IP addresses 157.112.182.218, 157.112.182.220 and 202.226.37.247.
Hosts with just one IP address:
ns2.xserver.jp directs to 35.72.43.26.
ns3.xserver.jp directs to 202.226.36.247.
Mail Servers
Mail for fourbrain.jp is handled by one mail server — fourbrain.jp.
fourbrain.jp has exactly one IP number: 157.112.176.30.