o-kosan.com - robtex.com
o-kosan.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 103.241.129.186🇯🇵 IDC103.241.128.0/22 RIDE Co.,Ltd. | ||||||
| PTR | bs003-006.domainserver.ne.jp | ||||||
| NS | ns01.domainserver.ne.jp ⭐ | ||||||
| A | 103.241.128.17🇯🇵 IDC103.241.128.0/22 RIDE Co.,Ltd. | ||||||
| PTR | ns01.domainserver.ne.jp | ||||||
| NS | ns02.domainserver.ne.jp | ||||||
| A | 103.96.252.17🇯🇵 atworks103.96.252.0/22 A.T.WORKS,Inc. CIDR-block NO.3 | ||||||
| PTR | ns02.domainserver.ne.jp | ||||||
| MX | pop.o-kosan.com ⭐ | ||||||
| A | 103.241.129.186🇯🇵 IDC103.241.128.0/22 RIDE Co.,Ltd. | ||||||
| PTR | bs003-006.domainserver.ne.jp | ||||||
| TXT | v=spf1 +ip4:103.241.128.0/22 +a +a:mxjp1.nospamcloud.com +a:mxjp2.nospamcloud... | ||||||
| SOA | ns01.domainserver.ne.jppostmaster@domainserver.ne.jp serial=1253083915 | ||||||
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=1774587847 | ||||||
Subdomains
pop.o-kosan.com |
Same first word
o-kosan.com |
Similar names
DNS History
4 records (4 active, 0 former)
●NSns01.domainserver.ne.jp2015-08-19 → 2026-03-27 · 2 obs
● 2026-03-27 05:10:10
●NSns02.domainserver.ne.jp2015-08-19 → 2026-03-27 · 2 obs
● 2026-03-27 05:10:10
●MXpop.o-kosan.com2015-08-19 → 2026-03-27 · 2 obs
● 2026-03-27 05:10:10
●A103.241.129.1862015-08-19 → 2026-03-27 · 2 obs
● 2026-03-27 05:10:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| o-kosan.com | ns01.domainserver.ne.jp, ns02.domainserver.ne.jp | - |
✅ Authoritative Response
Server:103.96.252.17
NS records: ns01.domainserver.ne.jp, ns02.domainserver.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for o-kosan.com (unsigned zone)
⏱️ Timing
Total: 1149ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 103.241.129.186 |
| NS | 2 | ns02.domainserver.ne.jp, ns01.domainserver.ne.jp |
| MX | 2 | pop.o-kosan.com (pri: 20), pop.o-kosan.com (pri: 10) |
| TXT | 1 | v=spf1 +ip4:103.241.128.0/22 +a +a:mxjp1 |
| SOA | 1 | ns01.domainserver.ne.jp postmaster.domai |
Analysis
Hierarchy
o-kosan.com is the parent of pop.o-kosan.com.
IP Addresses
o-kosan.com resolves to a single IP: 103.241.129.186.
Other host names, for instance pop.howling-bull.co.jp, www.k-sdk.com, taishin-k.jp, bs003-006.domainserver.ne.jp and pop.tnp-p.com share IP numbers with o-kosan.com.
Name Servers
o-kosan.com has two name servers: ns01.domainserver.ne.jp and ns02.domainserver.ne.jp.
o-kosan.com shares the same name server setup as other domains, for example e-dan.net, g-tec.jp, houaiyouchien.com, miyauchishokai.com and investbrain.co.jp.
o-kosan.com shares some name servers with other domains, for example coma.co.jp, snowboard.co.jp, pmalignment.com, abcshokai.co.jp and sunmart.jp.
These name servers are commonly used with the name servers ns01.
Host names with a single IP:
ns01.domainserver.ne.jp points to 103.241.128.17
ns02.domainserver.ne.jp points to 103.96.252.17
Mail Servers
o-kosan.com is handled by a single mail server, pop.o-kosan.com.
Host name pop.o-kosan.com points to IP 103.241.129.186.