programschool.jp - dns.ninja
programschool.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 133.242.249.195🇯🇵 SAKURA-A133.242.0.0/16 (1/ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan | ||||||
| PTR | www4255.sakura.ne.jp | ||||||
| NS | master.dns.ne.jp ⭐ | ||||||
| A | 210.224.172.18🇯🇵 SAKURA-C210.224.160.0/19 (1/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | master.dns.ne.jp | ||||||
| NS | ns1.dns.ne.jp | ||||||
| A | 61.211.236.1🇯🇵 SAKURA-B61.211.236.0/24 (4/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | ns1.dns.ne.jp | ||||||
| NS | ns2.dns.ne.jp | ||||||
| A | 133.167.21.1🇯🇵 SAKURA-C133.167.21.0/24 (OSAKA) SAKURA Internet // WEST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka, Osaka 530-0011, Japan | ||||||
| PTR | ns2.dns.ne.jp | ||||||
| MX | programschool.jp ⭐ | ||||||
| A | 133.242.249.195🇯🇵 SAKURA-A133.242.0.0/16 (1/ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan | ||||||
| PTR | www4255.sakura.ne.jp | ||||||
| TXT | google-site-verification=tv81s9GvXMLTOlkpXi_MrDFaM0thAEXVHEA1I9G_VTo | ||||||
| TXT | v=spf1 a:www4255.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2026-02-16 #1 | ||||||
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=1790506802 | ||||||
MX for
programschool.jp |
Same first word
programschool.xyz |
programschool.com |
programschool.jp |
Similar names
Previous names
Next names
DNS History
5 records (5 active, 0 former)
●MXprogramschool.jp2026-09-11 → 2026-09-27 · 2 obs
● 2026-09-27 11:27:32
●A133.242.249.1952026-09-11 → 2026-09-27 · 2 obs
● 2026-09-27 11:27:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | e.dns.jp, h.dns.jp, a.dns.jp, f.dns.jp... | - |
| programschool.jp | ns1.dns.ne.jp, ns2.dns.ne.jp | 2 records |
✅ Authoritative Response
Server:133.167.21.1
NS records: ns1.dns.ne.jp, ns2.dns.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for programschool.jp (unsigned zone)
⏱️ Timing
Total: 2971ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 133.242.249.195 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | programschool.jp (pri: 10) |
| TXT | 2 | google-site-verification=tv81s9GvXMLTOlk, v=spf1 a:www4255.sakura.ne.jp mx ~all |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.dns.ne.jp, ns2.dns.ne.jp)
Analysis
Mail Server Role
The MX record for programschool.jp points back to programschool.jp — it is its own mail server.
IP Addresses
programschool.jp directs to one IP number, which is 133.242.249.195.
Among the host names that share IP numbers with programschool.jp are metal-circle.com, kakinbase.com, tr-jp.com and two others.
Name Servers
The authoritative name servers for programschool.jp are master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp — three in total.
At least some of programschool.jp's name servers are shared with other domains, for example tsm51.com, hypies.com, tax-ishikura.com and two more.
The hostnames master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp each resolve to a single IP: master.dns.ne.jp → 210.224.172.18, ns1.dns.ne.jp → 61.211.236.1, ns2.dns.ne.jp → 133.167.21.1.
Mail Servers
The MX record for programschool.jp points to a single mail server: programschool.jp.
programschool.jp directs to just one IP number, 133.242.249.195.