corenetwork.jp - dns.ninja
corenetwork.jp
| DNSSEC | ⚠️ Not signed | ||||||
| NS | corenetwork.jp ⭐ | ||||||
| NS | dnss10.so-net.ne.jp | ||||||
| A | 210.139.255.1🇯🇵 So-net210.139.128.0/17 Sony Network Communications Inc. | ||||||
| PTR | dnss10.so-net.ne.jp | ||||||
| NS | dnss11.so-net.ne.jp | ||||||
| A | 210.139.255.17🇯🇵 So-net210.139.128.0/17 Sony Network Communications Inc. | ||||||
| PTR | dnss11.so-net.ne.jp | ||||||
| MX | sonet-common-mx.xspmail.jp ⭐ | ||||||
| A | 2001:240:bb81:94:160:13:60:174🇯🇵 IIJ-AS2001:240::/32 IIJ IPv6 BLOCK ( AS2497 ) | ||||||
| PTR | sonet-common-mx.xspmail.jp | ||||||
| A | 160.13.60.174🇯🇵 IIJ-AS160.13.0.0/16 IIJ IPv4 BLOCK ( AS2497 ) | ||||||
| PTR | sonet-common-mx.xspmail.jp | ||||||
| TXT | v=spf1 +include:plusdomain.spf.so-net.ne.jp ~all | ||||||
| SOA | corenetwork.jphostmaster@corenetwork.jp serial=2602171610 | ||||||
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=1783156503 | ||||||
NS for
corenetwork.jp |
Same first word
corenetwork.se |
corenetwork.us |
corenetwork.jp |
corenetwork.ca |
corenetwork.biz |
corenetwork.nl |
corenetwork.click |
Similar names
networkcore.co.uk |
networkcore.forum |
networkcore.eti.br |
networkcore.com |
networkcore.site |
networkcore.xyz |
networkcore.net |
reconetwork.com |
DNS History
5 records (4 active, 1 former)
●NScorenetwork.jp2015-05-11 → 2026-07-04 · 2 obs
● 2026-07-04 09:25:28
●NSdnss10.so-net.ne.jp2015-05-11 → 2026-07-04 · 2 obs
● 2026-07-04 09:25:28
●NSdnss11.so-net.ne.jp2015-05-11 → 2026-07-04 · 2 obs
● 2026-07-04 09:25:28
○MXmxpin.ms.so-net.ne.jp2015-05-11 → 2019-03-21 · 4 obs
● 2019-03-21 01:49:12
○ 2026-04-11 01:09:02
○ 2026-07-04 09:25:28
●MXsonet-common-mx.xspmail.jp2026-04-11 → 2026-07-04 · 3 obs
● 2026-04-11 01:09:02
● 2026-07-04 09:25:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | h.dns.jp, d.dns.jp, b.dns.jp, e.dns.jp... | - |
| corenetwork.jp | dnss10.so-net.ne.jp, dnss11.so-net.ne.jp | - |
✅ Authoritative Response
Server:210.139.255.17
NS records: dnss10.so-net.ne.jp, dnss11.so-net.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for corenetwork.jp (unsigned zone)
⏱️ Timing
Total: 1135ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | dnss10.so-net.ne.jp, dnss11.so-net.ne.jp |
| MX | 1 | sonet-common-mx.xspmail.jp (pri: 10) |
| TXT | 1 | v=spf1 +include:plusdomain.spf.so-net.ne |
| SOA | 1 | corenetwork.jp hostmaster.corenetwork.jp |
Analysis
Name Server Role
The NS records for corenetwork.jp point back to corenetwork.jp itself.
dnss10.so-net.ne.jp, dnss11.so-net.ne.jp and corenetwork.jp regularly act as name servers together.
Name Servers
The NS records for corenetwork.jp list three name servers: corenetwork.jp, dnss10.so-net.ne.jp and dnss11.so-net.ne.jp.
corenetwork.jp partially shares its NS delegation with several other domains, including ebukuro.co.jp, eddyplus.co.jp, idesign-ec.com and two others.
dnss10.so-net.ne.jp resolves to 210.139.255.1. dnss11.so-net.ne.jp resolves to 210.139.255.17. Both host names point to a single IP number.
Mail Servers
The sole mail server for corenetwork.jp is sonet-common-mx.xspmail.jp.
Among the domains sharing a mail server setup with corenetwork.jp are i(0x73686974)alia.com, koushin-p.co.jp, a-rukanpa2.com and two others.
The host sonet-common-mx.xspmail.jp resolves to 160.13.60.174 and 2001:240:bb81:94:160:13:60:174 — two IP addresses.