knowledgecase.com - dns.ninja
knowledgecase.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 111.89.201.106🇯🇵 InfoSphere111.89.0.0/16 INFOSPHERE | ||||||
| PTR | knowledgecase.com | ||||||
| NS | ns3.sphere.ad.jp ⭐ | ||||||
| A | 202.239.113.22🇯🇵 InfoSphere202.239.64.0/18 INFOSPHERE | ||||||
| PTR | ns3.sphere.ad.jp | ||||||
| NS | ns4.sphere.ad.jp | ||||||
| A | 202.239.113.30🇯🇵 InfoSphere202.239.64.0/18 INFOSPHERE | ||||||
| PTR | ns4.sphere.ad.jp | ||||||
| MX | knowledgecase.com ⭐ | ||||||
| A | 111.89.201.106🇯🇵 InfoSphere111.89.0.0/16 INFOSPHERE | ||||||
| PTR | knowledgecase.com | ||||||
| TXT | v=spf1 include:fmx.etius.jp +ip4:111.89.201.2/32 +ip4:111.89.201.106/32 -all | ||||||
| SOA | ns3.sphere.ad.jpdns@sphere.ad.jp serial=1576034128 | ||||||
com
| 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=1782788221 | ||||||
PTR for
MX for
knowledgecase.com |
Same first word
knowledgecase.com |
Similar names
DNS History
5 records (4 active, 1 former)
●NSns3.sphere.ad.jp2015-06-01 → 2026-06-30 · 2 obs
● 2026-06-30 03:09:00
●NSns4.sphere.ad.jp2015-06-01 → 2026-06-30 · 2 obs
● 2026-06-30 03:09:00
●MXknowledgecase.com2015-06-01 → 2026-06-30 · 2 obs
● 2026-06-30 03:09:00
●A111.89.201.1062015-06-01 → 2026-06-30 · 2 obs
● 2026-06-30 03:09:00
○A192.64.119.1472015-06-01 → 2015-06-01 · 3 obs
○ 2017-12-14 04:11:08
○ 2026-06-30 03:09:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | c.gtld-servers.net, b.gtld-servers.net, h.gtld-servers.net, l.gtld-servers.net... | - |
| knowledgecase.com | ns3.sphere.ad.jp, ns4.sphere.ad.jp | - |
✅ Authoritative Response
Server:202.239.113.22
NS records: ns3.sphere.ad.jp, ns4.sphere.ad.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for knowledgecase.com (unsigned zone)
⏱️ Timing
Total: 1146ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 111.89.201.106 |
| NS | 2 | ns3.sphere.ad.jp, ns4.sphere.ad.jp |
| MX | 1 | knowledgecase.com (pri: 10) |
| TXT | 1 | v=spf1 include:fmx.etius.jp +ip4:111.89. |
| SOA | 1 | ns3.sphere.ad.jp dns.sphere.ad.jp |
Analysis
Mail Server Role
knowledgecase.com acts as its own mail server.
IP Addresses
knowledgecase.com points to a single IP number: 111.89.201.106.
Name Servers
Two name servers handle the delegation for knowledgecase.com: ns3.sphere.ad.jp and ns4.sphere.ad.jp.
knowledgecase.com shares its name server setup with other domains, including yonekawa-ss.co.jp, bunkaza.com, 33089.pr.arena.ne.jp and two others.
knowledgecase.com has some name servers in common with other domains such as komori-naika.com, rcsboard.net and hellosystem.jp
Both ns3.sphere.ad.jp and ns4.sphere.ad.jp have a single IP address each — ns3.sphere.ad.jp resolves to 202.239.113.22 while ns4.sphere.ad.jp resolves to 202.239.113.30.
Mail Servers
knowledgecase.com has a single mail server: knowledgecase.com itself.
knowledgecase.com carries a single IP number, which is 111.89.201.106.