instructors.jp - dns.ninja
instructors.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=1786901403 | ||||||
MX for
instructors.jp |
Same first word
Similar names
DNS History
11 records (7 active, 4 former)
○NSns.network.jp2019-04-06 → 2019-04-06 · 3 obs
○ 2026-03-07 09:35:00
○ 2026-08-16 18:11:36
●NSns1.xserver.jp2026-03-07 → 2026-08-16 · 3 obs
● 2026-03-07 09:35:00
● 2026-08-16 18:11:36
●NSns2.xserver.jp2026-03-07 → 2026-08-16 · 3 obs
● 2026-03-07 09:35:00
● 2026-08-16 18:11:36
○NSns28.network.jp2019-04-06 → 2019-04-06 · 3 obs
○ 2026-03-07 09:35:00
○ 2026-08-16 18:11:36
●NSns3.xserver.jp2026-03-07 → 2026-08-16 · 3 obs
● 2026-03-07 09:35:00
● 2026-08-16 18:11:36
●NSns4.xserver.jp2026-03-07 → 2026-08-16 · 3 obs
● 2026-03-07 09:35:00
● 2026-08-16 18:11:36
●NSns5.xserver.jp2026-03-07 → 2026-08-16 · 3 obs
● 2026-03-07 09:35:00
● 2026-08-16 18:11:36
●MXinstructors.jp2026-03-07 → 2026-08-16 · 3 obs
● 2026-03-07 09:35:00
● 2026-08-16 18:11:36
○MXmail.instructors.jp2019-04-06 → 2019-04-06 · 3 obs
○ 2026-03-07 09:35:00
○ 2026-08-16 18:11:36
○A112.78.120.282019-04-06 → 2019-04-06 · 3 obs
○ 2026-03-07 09:35:00
○ 2026-08-16 18:11:36
●A162.43.116.652026-03-07 → 2026-08-16 · 3 obs
● 2026-03-07 09:35:00
● 2026-08-16 18:11:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| instructors.jp | ns3.xserver.jp, ns4.xserver.jp, ns5.xserver.jp, ns1.xserver.jp... | 11 records |
✅ Authoritative Response
Server:202.226.36.247
NS records: ns3.xserver.jp, ns4.xserver.jp, ns5.xserver.jp, ns1.xserver.jp, ns2.xserver.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for instructors.jp (unsigned zone)
⏱️ Timing
Total: 947ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 162.43.116.65 |
| NS | 5 | ns3.xserver.jp, ns4.xserver.jp... |
| MX | 1 | instructors.jp (pri: 0) |
| TXT | 1 | v=spf1 +a:sv13064.xserver.jp +a:instruct |
| SOA | 1 | ns1.xserver.jp root.xserver.jp |
📌 Glue Records Collected
Total: 11
Out-of-bailiwick: 11 (ns1.xserver.jp, ns1.xserver.jp, ns1.xserver.jp...)
Analysis
Mail Server Role
instructors.jp is listed as a mail server for itself.
IP Addresses
instructors.jp resolves to one IP address: 162.43.116.65.
taikolab.com, inf-inc.com, owakatu.com and two other host names share IP numbers with instructors.jp.
Name Servers
instructors.jp has five name servers, which are ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp and two others.
The name servers of instructors.jp overlap at least partially with those of other domains — among them nojima-k.jp, game-tube.info, ashworthinc.com and two more.
These name servers commonly appear alongside the name servers ns4.xserver.jp and ns5.xserver.jp.
Hostnames that resolve to three IP addresses:
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.
Hosts with just one IP address:
ns2.xserver.jp resolves to 35.72.43.26.
ns3.xserver.jp resolves to 202.226.36.247.
Mail Servers
Mail for instructors.jp is handled by one mail server — instructors.jp.
instructors.jp points to one IP number — 162.43.116.65.