kodera.jp - robtex.com
kodera.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 114.17.21.146🇯🇵 KDDI114.17.0.0/16 | ||||||
| PTR | dns20.n-server.com | ||||||
| NS | ns.kodera.jp ⭐ ⚠️ Not in parent delegation | ||||||
| A | 114.17.21.146🇯🇵 KDDI114.17.0.0/16 | ||||||
| PTR | dns20.n-server.com | ||||||
| NS | dns136.n-server.com ⚠️ Not in zone NS records | ||||||
| A | 114.17.21.136🇯🇵 KDDI114.17.0.0/16 | ||||||
| PTR | dns136.n-server.com | ||||||
| NS | dns20.n-server.com ⚠️ Not in zone NS records | ||||||
| A | 114.17.21.146🇯🇵 KDDI114.17.0.0/16 | ||||||
| PTR | dns20.n-server.com | ||||||
| MX | mail.kodera.jp ⭐ | ||||||
| A | 114.17.21.146🇯🇵 KDDI114.17.0.0/16 | ||||||
| PTR | dns20.n-server.com | ||||||
| TXT | v=spf1 +a +mx -all +a:dns20.n-server.com | ||||||
| SOA | ns.kodera.jpplesk@purenic.jp 2025-10-08 #2 | ||||||
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=1783462503 | ||||||
Subdomains
Same first word
kodera.com.cn |
kodera.de |
kodera.eu |
kodera.co.jp |
kodera.jp |
kodera.com.br |
kodera.net |
kodera.info |
kodera.pl |
kodera.cz |
kodera.nl |
kodera.org |
Similar names
DNS History
7 records (5 active, 2 former)
●NSdns136.n-server.com2026-06-29 → 2026-07-07 · 3 obs
● 2026-06-29 15:08:54
● 2026-07-07 22:33:52
●NSdns20.n-server.com2026-06-29 → 2026-07-07 · 3 obs
● 2026-06-29 15:08:54
● 2026-07-07 22:33:52
●NSns.kodera.jp2015-07-18 → 2026-07-07 · 2 obs
● 2026-07-07 22:33:52
●MXmail.kodera.jp2015-07-18 → 2026-07-07 · 2 obs
● 2026-07-07 22:33:52
○A106.186.69.172016-05-01 → 2020-02-26 · 5 obs
● 2016-05-01 23:55:54
● 2020-02-26 13:22:16
○ 2026-06-29 15:08:54
○ 2026-07-07 22:33:52
●A114.17.21.1462026-06-29 → 2026-07-07 · 3 obs
● 2026-06-29 15:08:54
● 2026-07-07 22:33:52
○A118.155.214.652015-07-18 → 2016-02-24 · 4 obs
● 2016-02-24 22:09:30
○ 2016-05-01 23:55:54
○ 2026-07-07 22:33:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | e.dns.jp, a.dns.jp, c.dns.jp, d.dns.jp... | - |
| kodera.jp | dns20.n-server.com, dns136.n-server.com | - |
✅ Authoritative Response
Server:114.17.21.136
NS records: dns20.n-server.com, dns136.n-server.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for kodera.jp (unsigned zone)
⏱️ Timing
Total: 2159ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 114.17.21.146 |
| NS | 1 | ns.kodera.jp |
| MX | 1 | mail.kodera.jp (pri: 10) |
| TXT | 1 | v=spf1 +a +mx -all +a:dns20.n-server.com |
| SOA | 1 | ns.kodera.jp plesk.purenic.jp |
Analysis
Hierarchy
www.kodera.jp, ns.kodera.jp and mail.kodera.jp are all subdomains of kodera.jp.
IP Addresses
kodera.jp resolves to just one IP address, 114.17.21.146.
Two other host names, along with ns.kaigono-tobira.co.jp, free-6226.com and oozora-paint.co.jp, also share IP numbers with kodera.jp.
Name Servers
kodera.jp is served by three name servers: dns136.n-server.com, dns20.n-server.com and ns.kodera.jp.
The name servers of kodera.jp overlap at least partially with those of other domains — among them sezaki-tent.co.jp, miyoshinoseikaho.com, kamesome.co.jp and two more.
These name servers commonly appear in delegations together with dns12.n-server.com, dns10.n-server.com, dns14.n-server.com and 7 other.
All three hosts carry a single IP: dns136.n-server.com directs to 114.17.21.136, while dns20.n-server.com and ns.kodera.jp both direct to 114.17.21.146.
dns20.n-server.com and ns.kodera.jp each have 114.17.21.146 IP addresses.
Mail Servers
The sole mail server for kodera.jp is mail.kodera.jp.
mail.kodera.jp resolves to 114.17.21.146 and no other IP number.