edu-ref.jp - robtex.com
edu-ref.jp
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1-06.azure-dns.com ⭐ | ||||||
| A | 2603:1061:0:700::6🇺🇸 Microsoft2603:1000::/25 MICROSOFT | ||||||
| PTR | ns1-06.azure-dns.com | ||||||
| A | 13.107.236.6🇺🇸 Microsoft13.104.0.0/14 MICROSOFT | ||||||
| PTR | ns1-06.azure-dns.com | ||||||
| NS | ns2-06.azure-dns.net | ||||||
| A | 2620:1ec:8ec:700::6🇺🇸 Microsoft2620:1ec::/36 MICROSOFT | ||||||
| PTR | ns2-06.azure-dns.net | ||||||
| A | 150.171.21.6🇺🇸 Microsoft150.171.0.0/16 MICROSOFT | ||||||
| PTR | ns2-06.azure-dns.net | ||||||
| NS | ns3-06.azure-dns.org | ||||||
| A | 2a01:111:4000:700::6🇬🇧 Microsoft2a01:111:4000::/36 | ||||||
| PTR | ns3-06.azure-dns.org | ||||||
| A | 204.14.183.6🇺🇸 Microsoft204.14.180.0/22 | ||||||
| PTR | ns3-06.azure-dns.org | ||||||
| NS | ns4-06.azure-dns.info | ||||||
| A | 2620:1ec:bda:700::6🇺🇸 Microsoft2620:1ec::/36 MICROSOFT | ||||||
| PTR | ns4-06.azure-dns.info | ||||||
| A | 208.84.5.6🇺🇸 Microsoft208.84.0.0/21 MICROSOFT | ||||||
| PTR | ns4-06.azure-dns.info | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns1-06.azure-dns.comazuredns-hostmaster@microsoft.com serial=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=1776078003 | ||||||
Same first word
edu-ref.jp |
DNS History
4 records (4 active, 0 former)
●NSns1-06.azure-dns.com2026-03-26 → 2026-04-13 · 2 obs
● 2026-04-13 11:22:20
●NSns2-06.azure-dns.net2026-03-26 → 2026-04-13 · 2 obs
● 2026-04-13 11:22:20
●NSns3-06.azure-dns.org2026-03-26 → 2026-04-13 · 2 obs
● 2026-04-13 11:22:20
●NSns4-06.azure-dns.info2026-03-26 → 2026-04-13 · 2 obs
● 2026-04-13 11:22:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | e.dns.jp, g.dns.jp, c.dns.jp, a.dns.jp... | - |
| edu-ref.jp | ns4-06.azure-dns.info, ns1-06.azure-dns.com, ns2-06.azure-dns.net, ns3-06.azure-dns.org | - |
✅ Authoritative Response
Server:208.84.5.6
NS records: ns4-06.azure-dns.info, ns1-06.azure-dns.com, ns2-06.azure-dns.net, ns3-06.azure-dns.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for edu-ref.jp (unsigned zone)
⏱️ Timing
Total: 953ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | ns1-06.azure-dns.com, ns2-06.azure-dns.net... |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns1-06.azure-dns.com azuredns-hostmaster |
Analysis
Name Servers
edu-ref.jp is delegated to four name servers: ns1-06.azure-dns.com, ns4-06.azure-dns.info, ns2-06.azure-dns.net and ns3-06.azure-dns.org.
edu-ref.jp at least partially shares name servers with other domains, for instance msne.com, catchalive.com, copyandlink.net, jimgile.com and aic.org.br.
Host names with two IP numbers:
Host name ns1-06.azure-dns.com points to: 2603:1061:0:700::6 and 13.107.236.6.
Host name ns4-06.azure-dns.info points to: 2620:1ec:bda:700::6 and 208.84.5.6.
Host name ns2-06.azure-dns.net points to: 2620:1ec:8ec:700::6 and 150.171.21.6.
Host name ns3-06.azure-dns.org points to: 2a01:111:4000:700::6 and 204.14.183.6.