educas.jp - robtex.com
educas.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 211.126.203.68🇯🇵 KDDI211.126.0.0/16 | ||||||
| NS | ns1.educas.jp ⭐ | ||||||
| A | 211.126.203.70🇯🇵 KDDI211.126.0.0/16 | ||||||
| NS | dns3.dion.ne.jp | ||||||
| A | 210.141.108.248🇯🇵 KDDI210.141.96.0/19 | ||||||
| PTR | dns3.dion.ne.jp | ||||||
| MX | mail.educas.jp ⭐ | ||||||
| A | 211.126.203.70🇯🇵 KDDI211.126.0.0/16 | ||||||
| MX | shikyoren.educas.jp(50) | ||||||
| A | 211.126.203.70🇯🇵 KDDI211.126.0.0/16 | ||||||
| TXT | google-site-verification=mtRXfjiqDPLFf8upMtfOqdXV-pX8nxqUNkBesjPHeCk | ||||||
| TXT | v=spf1 ip4:211.126.203.65/29 a mx ip4:183.181.98.38 ip4:220.213.160.59 includ... | ||||||
| SOA | ns1.educas.jppostmaster@educas.jp 2026-01-25 #3 | ||||||
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=1775958302 | ||||||
Subdomains
ns1.educas.jp |
shikyoren.educas.jp |
mail.educas.jp |
Same first word
Similar names
DNS History
6 records (5 active, 1 former)
●NSdns3.dion.ne.jp2015-07-12 → 2026-04-12 · 2 obs
● 2026-04-12 02:12:44
○NSns.educas.jp2015-07-12 → 2018-10-17 · 4 obs
● 2018-10-17 12:49:22
○ 2026-03-26 02:16:56
○ 2026-04-12 02:12:44
●NSns1.educas.jp2026-03-26 → 2026-04-12 · 3 obs
● 2026-03-26 02:16:56
● 2026-04-12 02:12:44
●MXmail.educas.jp2015-07-12 → 2026-04-12 · 5 obs
● 2017-01-17 01:44:20
○ 2018-10-17 12:49:22
● 2026-03-26 02:16:56
● 2026-04-12 02:12:44
●MXshikyoren.educas.jp2026-03-26 → 2026-04-12 · 3 obs
● 2026-03-26 02:16:56
● 2026-04-12 02:12:44
●A211.126.203.682015-07-12 → 2026-04-12 · 2 obs
● 2026-04-12 02:12:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| educas.jp | ns1.educas.jp, dns3.dion.ne.jp | 1 record |
✅ Authoritative Response
Server:211.126.203.70
NS records: ns1.educas.jp, dns3.dion.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for educas.jp (unsigned zone)
⏱️ Timing
Total: 1271ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 211.126.203.68 |
| NS | 2 | dns3.dion.ne.jp, ns1.educas.jp |
| MX | 2 | shikyoren.educas.jp (pri: 50), mail.educas.jp (pri: 30) |
| TXT | 2 | google-site-verification=mtRXfjiqDPLFf8u, v=spf1 ip4:211.126.203.65/29 a mx ip4:18 |
| SOA | 1 | ns1.educas.jp postmaster.educas.jp |
📌 Glue Records Collected
Total: 1
In-bailiwick: 1 (ns1.educas.jp)
Analysis
Hierarchy
educas.jp is a parent of ns1.educas.jp, shikyoren.educas.jp and mail.educas.jp.
IP Addresses
educas.jp points to a single IP number: 211.126.203.68.
Name Servers
educas.jp is delegated to two name servers: ns1.educas.jp and dns3.dion.ne.jp.
educas.jp at least partially shares name servers with other domains, for instance 32h.65.251.210.in-addr.arpa, 64h.83.249.210.in-addr.arpa, chuolinen.co.jp, pipi.jp and machiene.co.jp.
These name servers are often used together with the name servers dns1.jregroup.ne.jp, dns2.jregroup.ne.jp, nsx01.jfe-gr.net, nsx01u.jfe-gr.net, nsx02.jfe-gr.net, nsx02u.jfe-gr.net, nsx21.jfe-gr.net, nsx22.jfe-gr.net, ns.c-3.co.jp and ns1.jtg-net.jp.
Host names with one IP number:
The host ns1.educas.jp points to 211.126.203.70 and the host dns3.dion.ne.jp points to 210.141.108.248.
Mail Servers
educas.jp is handled by two mail servers: mail.educas.jp and shikyoren.educas.jp.
Host names with a single IP number:
mail.educas.jp points to 211.126.203.70 and shikyoren.educas.jp points to 211.126.203.70.
Host names that point to 211.126.203.70: mail.educas.jp and shikyoren.educas.jp.