studycast.jp - robtex.com
studycast.jp
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1-03.azure-dns.com ⭐ | ||||||
| A | 2603:1061:0:700::3🇺🇸 Microsoft2603:1000::/25 MICROSOFT | ||||||
| PTR | ns1-03.azure-dns.com | ||||||
| A | 13.107.236.3🇺🇸 Microsoft13.104.0.0/14 MICROSOFT | ||||||
| PTR | ns1-03.azure-dns.com | ||||||
| NS | ns2-03.azure-dns.net | ||||||
| A | 2620:1ec:8ec:700::3🇺🇸 Microsoft2620:1ec::/36 MICROSOFT | ||||||
| PTR | ns2-03.azure-dns.net | ||||||
| A | 150.171.21.3🇺🇸 Microsoft150.171.0.0/16 MICROSOFT | ||||||
| PTR | ns2-03.azure-dns.net | ||||||
| NS | ns3-03.azure-dns.org | ||||||
| A | 2a01:111:4000:700::3🇬🇧 Microsoft2a01:111:4000::/36 | ||||||
| PTR | ns3-03.azure-dns.org | ||||||
| A | 204.14.183.3🇺🇸 Microsoft204.14.180.0/22 | ||||||
| PTR | ns3-03.azure-dns.org | ||||||
| NS | ns4-03.azure-dns.info | ||||||
| A | 2620:1ec:bda:700::3🇺🇸 Microsoft2620:1ec::/36 MICROSOFT | ||||||
| PTR | ns4-03.azure-dns.info | ||||||
| A | 208.84.5.3🇺🇸 Microsoft208.84.0.0/21 MICROSOFT | ||||||
| PTR | ns4-03.azure-dns.info | ||||||
| SOA | ns1-03.azure-dns.comroot-dns@benesse.co.jp serial=20190724 | ||||||
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=1773558003 | ||||||
Subdomains
api-stg.studycast.jp |
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSns1-03.azure-dns.com2026-02-17 → 2026-03-23 · 2 obs
● 2026-03-23 13:08:40
●NSns2-03.azure-dns.net2026-02-17 → 2026-03-23 · 2 obs
● 2026-03-23 13:08:40
●NSns3-03.azure-dns.org2026-02-17 → 2026-03-23 · 2 obs
● 2026-03-23 13:08:40
●NSns4-03.azure-dns.info2026-02-17 → 2026-03-23 · 2 obs
● 2026-03-23 13:08:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | e.dns.jp, g.dns.jp, c.dns.jp, a.dns.jp... | - |
| studycast.jp | ns1-03.azure-dns.com, ns2-03.azure-dns.net, ns3-03.azure-dns.org, ns4-03.azure-dns.info | - |
✅ Authoritative Response
Server:204.14.183.3
NS records: ns1-03.azure-dns.com, ns2-03.azure-dns.net, ns3-03.azure-dns.org, ns4-03.azure-dns.info
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for studycast.jp (unsigned zone)
⏱️ Timing
Total: 747ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | ns1-03.azure-dns.com, ns2-03.azure-dns.net... |
| SOA | 1 | ns1-03.azure-dns.com root-dns.benesse.co |
Analysis
Hierarchy
studycast.jp is a parent of api-stg.studycast.jp.
Name Servers
studycast.jp is delegated to four name servers: ns1-03.azure-dns.com, ns4-03.azure-dns.info, ns2-03.azure-dns.net and ns3-03.azure-dns.org.
At least part of the name servers for studycast.jp are shared with other domains, for instance dynamicscommerce.sk, mlcholdings.net, gotoapro.org, fundacaopromon.com.br and amgerpro.com.
Host names with two IP numbers:
ns1-03.azure-dns.com points to: 2603:1061:0:700::3 and 13.107.236.3
ns4-03.azure-dns.info points to: 2620:1ec:bda:700::3 and 208.84.5.3
ns2-03.azure-dns.net points to: 2620:1ec:8ec:700::3 and 150.171.21.3
ns3-03.azure-dns.org points to: 2a01:111:4000:700::3 and 204.14.183.3