cotaro.jp - robtex.com
cotaro.jp
| DNSSEC | ⚠️ Not signed | ||||||
| NS | cotaro.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 | cotaro.jphostmaster@cotaro.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=1778690702 | ||||||
NS for
cotaro.jp |
Same first word
cotaro.jp |
Similar names
DNS History
5 records (4 active, 1 former)
●NScotaro.jp2015-06-04 → 2026-05-13 · 2 obs
● 2026-05-13 17:25:40
●NSdnss10.so-net.ne.jp2015-06-04 → 2026-05-13 · 2 obs
● 2026-05-13 17:25:40
●NSdnss11.so-net.ne.jp2015-06-04 → 2026-05-13 · 2 obs
● 2026-05-13 17:25:40
○MXmxpin.ms.so-net.ne.jp2015-06-04 → 2017-01-08 · 4 obs
● 2017-01-08 09:38:48
○ 2026-05-13 08:24:38
○ 2026-05-13 17:25:40
●MXsonet-common-mx.xspmail.jp2026-05-13 → 2026-05-13 · 3 obs
● 2026-05-13 08:24:38
● 2026-05-13 17:25:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | e.dns.jp, g.dns.jp, c.dns.jp, a.dns.jp... | - |
| cotaro.jp | dnss10.so-net.ne.jp, dnss11.so-net.ne.jp | - |
✅ Authoritative Response
Server:210.139.255.1
NS records: dnss10.so-net.ne.jp, dnss11.so-net.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cotaro.jp (unsigned zone)
⏱️ Timing
Total: 1782ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | dnss11.so-net.ne.jp, dnss10.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 | cotaro.jp hostmaster.cotaro.jp |
Analysis
Name Server Role
cotaro.jp serves as a name server for cotaro.jp.
Typically, dnss10.so-net.ne.jp and dnss11.so-net.ne.jp are used as name servers together with cotaro.jp.
Name Servers
cotaro.jp is delegated to three name servers: cotaro.jp, dnss10.so-net.ne.jp and dnss11.so-net.ne.jp.
cotaro.jp at least partially shares name servers with other domains, for instance ryukyu-law.com, persons-ds.co.jp, jibiki.co.jp, yatsu-genjin.jp and tnrj.jp.
Host names with one IP number:
dnss10.so-net.ne.jp points to 210.139.255.1
dnss11.so-net.ne.jp points to 210.139.255.17
Mail Servers
cotaro.jp is handled by a single mail server, sonet-common-mx.xspmail.jp.
cotaro.jp shares the same mail server setup as other domains, for instance rl-real.com, yasarchi.jp, suitparts.com, at-n1.com and ippusenkin.com.
sonet-common-mx.xspmail.jp resolves to two IP numbers: 2001:240:bb81:94:160:13:60:174 and 160.13.60.174.