school-i.net - robtex.com
school-i.net
| DNSSEC | ⚠️ Not signed | ||||||
| A | 133.125.101.23🇯🇵 SAKURA-A133.125.0.0/16 (ISHIKARI) SAKURA Internet // EAST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka, Osaka 530-0011, Japan | ||||||
| PTR | school-i.net | ||||||
| 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 | school-i.net ⭐ | ||||||
| A | 133.125.101.23🇯🇵 SAKURA-A133.125.0.0/16 (ISHIKARI) SAKURA Internet // EAST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka, Osaka 530-0011, Japan | ||||||
| PTR | school-i.net | ||||||
| TXT | v=spf1 +ip4:133.125.101.23 +ip4:153.126.241.49 include:_spf.school-i.net incl... | ||||||
| TXT | google-site-verification=gS8aw-0o23SD70RJD4M2rWiS-siQ0AmQuOhnJmdeRzM | ||||||
| TXT | google-site-verification=EG5v1Pq1lGcuIDvWrAhQ7luRH7EJZ5mlfQFGeWvOPME | ||||||
| TXT | google-site-verification=6TGBqPvSkXWRC9FT2HnqngnGxJOo53weRshYxFatEWM | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2026-02-06 #3 | ||||||
net
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1778541296 | ||||||
PTR for
MX for
school-i.net |
Same first word
Similar names
i-school.eu |
i-school.kiev.ua |
cos-holi.com |
i-school.net |
i-school.kz |
i-school.vn |
i-school.org |
i-school.ch |
i-school.cz |
i-school.co.il |
DNS History
6 records (5 active, 1 former)
●MXschool-i.net2015-06-19 → 2026-05-11 · 2 obs
● 2026-05-11 23:22:16
●A133.125.101.232026-04-09 → 2026-05-11 · 3 obs
● 2026-04-09 01:53:20
● 2026-05-11 23:22:16
○A153.120.59.1442015-06-19 → 2017-02-01 · 4 obs
● 2017-02-01 10:56:42
○ 2026-04-09 01:53:20
○ 2026-05-11 23:22:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| school-i.net | ns1.dns.ne.jp, ns2.dns.ne.jp | - |
✅ Authoritative Response
Server:61.211.236.1
NS records: ns1.dns.ne.jp, ns2.dns.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for school-i.net (unsigned zone)
⏱️ Timing
Total: 1008ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 133.125.101.23 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | school-i.net (pri: 10) |
| TXT | 4 | google-site-verification=6TGBqPvSkXWRC9F, v=spf1 +ip4:133.125.101.23 +ip4:153.126.... |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
Analysis
Mail Server Role
school-i.net serves as the mail server for school-i.net.
IP Addresses
school-i.net resolves to a single IP address: 133.125.101.23.
Name Servers
school-i.net is delegated to three name servers: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
school-i.net at least partially shares name servers with other domains, including garden-tokyo.com, kakuonji.sakura.ne.jp, i-daiku.com, woodmax.jp and uenomura-tabi.com.
Hostnames 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
A single mail server handles school-i.net.
school-i.net points to a single IP: 133.125.101.23.