olt.jp - robtex.com
olt.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=1784336403 | ||||||
MX for
olt.jp |
Subdomains
willcom.olt.jp |
Same first word
Similar names
DNS History
7 records (7 active, 0 former)
●NSns1.xserver.jp2015-08-06 → 2026-07-18 · 2 obs
● 2026-07-18 01:54:18
●NSns2.xserver.jp2015-08-06 → 2026-07-18 · 2 obs
● 2026-07-18 01:54:18
●NSns3.xserver.jp2015-08-06 → 2026-07-18 · 2 obs
● 2026-07-18 01:54:18
●NSns4.xserver.jp2015-08-06 → 2026-07-18 · 2 obs
● 2026-07-18 01:54:18
●NSns5.xserver.jp2015-08-06 → 2026-07-18 · 2 obs
● 2026-07-18 01:54:18
●MXolt.jp2015-08-06 → 2026-07-18 · 2 obs
● 2026-07-18 01:54:18
●A157.112.189.572015-08-06 → 2026-07-18 · 2 obs
● 2026-07-18 01:54:18
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| olt.jp | ns4.xserver.jp, ns3.xserver.jp, ns5.xserver.jp, ns2.xserver.jp... | 11 records |
✅ Authoritative Response
Server:35.72.43.26
NS records: ns4.xserver.jp, ns3.xserver.jp, ns5.xserver.jp, ns2.xserver.jp, ns1.xserver.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for olt.jp (unsigned zone)
⏱️ Timing
Total: 4050ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 157.112.189.57 |
| NS | 5 | ns5.xserver.jp, ns3.xserver.jp... |
| MX | 1 | olt.jp (pri: 0) |
| TXT | 1 | v=spf1 +a:sv1056.xserver.jp +a:olt.jp +m |
| 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
Hierarchy
willcom.olt.jp is delegated beneath olt.jp.
Mail Server Role
olt.jp acts as its own mail server.
IP Addresses
olt.jp points to a single IP number: 157.112.189.57.
Additional host names — www.diveoneroad.com, willcom.olt.jp, ko-pri.com and two others — share IP numbers with olt.jp.
Name Servers
Delegation for olt.jp is to five name servers: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp and two others.
There is at least partial name server overlap between olt.jp and other domains — ti-n.co.jp, ekiden-jeans.com, ile2000.com and two more among them.
These name servers frequently co-occur with the name servers ns4.xserver.jp and ns5.xserver.jp.
Host names with three IP numbers:
ns1.xserver.jp resolves to 202.226.36.164, 202.226.36.170 and 202.226.36.246.
ns4.xserver.jp resolves to 183.90.224.226, 183.90.224.230 and 202.226.39.247.
ns5.xserver.jp resolves to 157.112.182.218, 157.112.182.220 and 202.226.37.247.
Host names pointing to a single IP address:
ns2.xserver.jp resolves to 35.72.43.26.
ns3.xserver.jp resolves to 202.226.36.247.
Mail Servers
olt.jp has a single mail server: olt.jp itself.
olt.jp points to one IP number — 157.112.189.57.