school.arst.jp - robtex.com
school.arst.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 219.94.128.169🇯🇵 SAKURA-C219.94.128.0/17 (3/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www929.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 ⚠️ Not in parent delegation | ||||||
| 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 ⚠️ Not in parent delegation | ||||||
| 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 | school.arst.jp ⭐ | ||||||
| A | 219.94.128.169🇯🇵 SAKURA-C219.94.128.0/17 (3/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www929.sakura.ne.jp | ||||||
| TXT | v=spf1 a:www929.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2019-01-13 #18 | ||||||
arst.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 13.112.141.78🇯🇵 Amazon13.112.0.0/14 EC2 NRT prefix | ||||||
| NS | master.dns.ne.jp ⭐ | ||||||
| NS | ns1.dns.ne.jp | ||||||
| NS | ns2.dns.ne.jp | ||||||
| MX | smtp.google.com ⭐ | ||||||
| TXT | v=spf1 include:_spf.google.com a:www929.sakura.ne.jp mx ~all | ||||||
| TXT | google-site-verification=lF-88nqEWB67p-DiN2W9PgFe4-p540IzaMzzPvbRNAA | ||||||
| TXT | google-site-verification=o7hu5LxLKeV3dGhuVEzX6SY6NBspoJ6hoyQ_bFMWN5c | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2026-01-20 #4 | ||||||
MX for
school.arst.jp |
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●MXschool.arst.jp2015-05-22 → 2026-05-12 · 2 obs
● 2026-05-12 00:05:44
●A219.94.128.1692015-05-22 → 2026-05-12 · 2 obs
● 2026-05-12 00:05:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | e.dns.jp, g.dns.jp, c.dns.jp, a.dns.jp... | - |
| arst.jp | ns2.dns.ne.jp, ns1.dns.ne.jp | 2 records |
✅ Authoritative Response
Server:61.211.236.1
NS records: ns2.dns.ne.jp, ns1.dns.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for arst.jp (unsigned zone)
⏱️ Timing
Total: 1015ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 219.94.128.169 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | school.arst.jp (pri: 10) |
| TXT | 1 | v=spf1 a:www929.sakura.ne.jp mx ~all |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns2.dns.ne.jp, ns1.dns.ne.jp)
Analysis
Mail Server Role
school.arst.jp serves as the mail server for school.arst.jp.
IP Addresses
school.arst.jp points to IP number: 219.94.128.169.
Other host names such as on-side.co.jp, nokoto.net, tamanegi.jp, www929.sakura.ne.jp and solweed.com share IPs with school.arst.jp.
Name Servers
school.arst.jp is delegated to three name servers: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
school.arst.jp at least partially shares name servers with other domains, for instance aim-web.net, 0178.info, ktai.sakura.ne.jp, kio.sakura.ne.jp and avit.sakura.ne.jp.
these name servers are often used in conjunction with the name servers dns.sakura.ad.jp.
Host names with a single IP:
master.dns.ne.jp points to: 210.224.172.18.
ns1.dns.ne.jp points to: 61.211.236.1.
ns2.dns.ne.jp points to: 133.167.21.1.
Mail Servers
school.arst.jp is handled by a single mail server, school.arst.jp.
school.arst.jp points to a single IP: 219.94.128.169.