chuo-c.jp - robtex.com
chuo-c.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 140.227.144.80🇯🇵 InfoSphere140.227.0.0/16 INFOSPHERE | ||||||
| PTR | chuo-c.jp | ||||||
| NS | asns1.customer.ne.jp ⭐ | ||||||
| A | 210.150.254.86🇯🇵 InfoSphere210.150.0.0/16 INFOSPHERE | ||||||
| PTR | asns1.customer.ne.jp | ||||||
| NS | asns2.customer.ne.jp | ||||||
| A | 210.150.254.94🇯🇵 InfoSphere210.150.0.0/16 INFOSPHERE | ||||||
| PTR | asns2.customer.ne.jp | ||||||
| MX | mail.chuo-c.jp ⭐ | ||||||
| A | 140.227.144.80🇯🇵 InfoSphere140.227.0.0/16 INFOSPHERE | ||||||
| PTR | chuo-c.jp | ||||||
| TXT | v=spf1 +ip4:202.130.61.128/25 +ip4:218.40.15.192/26 +ip4:140.227.144.80/32 +i... | ||||||
| SOA | asns1.customer.ne.jpdns@sphere.ad.jp 2006-09-25 #58 | ||||||
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=1774697402 | ||||||
PTR for
Previously MX for
chuo-c.jp |
Subdomains
mail.chuo-c.jp |
Same first word
chuo-c.jp |
DNS History
7 records (4 active, 3 former)
●NSasns1.customer.ne.jp2015-07-22 → 2026-03-28 · 2 obs
● 2026-03-28 11:41:24
●NSasns2.customer.ne.jp2015-07-22 → 2026-03-28 · 2 obs
● 2026-03-28 11:41:24
○MXchuo-c.jp2015-07-22 → 2020-03-05 · 4 obs
● 2020-03-05 07:21:56
○ 2026-02-15 13:20:34
○ 2026-03-28 11:41:24
●MXmail.chuo-c.jp2026-02-15 → 2026-03-28 · 3 obs
● 2026-02-15 13:20:34
● 2026-03-28 11:41:24
○MXsmtp3.beat-fx.com2015-07-22 → 2020-03-05 · 4 obs
● 2020-03-05 07:21:56
○ 2026-02-15 13:20:34
○ 2026-03-28 11:41:24
●A140.227.144.802026-02-15 → 2026-03-28 · 3 obs
● 2026-02-15 13:20:34
● 2026-03-28 11:41:24
○A202.130.61.1422015-07-22 → 2020-03-05 · 4 obs
● 2020-03-05 07:21:56
○ 2026-02-15 13:20:34
○ 2026-03-28 11:41:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| chuo-c.jp | asns1.customer.ne.jp, asns2.customer.ne.jp | - |
✅ Authoritative Response
Server:210.150.254.86
NS records: asns1.customer.ne.jp, asns2.customer.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for chuo-c.jp (unsigned zone)
⏱️ Timing
Total: 1844ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 140.227.144.80 |
| NS | 2 | asns1.customer.ne.jp, asns2.customer.ne.jp |
| MX | 1 | mail.chuo-c.jp (pri: 10) |
| TXT | 1 | v=spf1 +ip4:202.130.61.128/25 +ip4:218.4 |
| SOA | 1 | asns1.customer.ne.jp dns.sphere.ad.jp |
Analysis
Hierarchy
The parent of mail.chuo-c.jp is chuo-c.jp.
IP Addresses
chuo-c.jp points to a single IP: 140.227.144.80.
Other host names, such as mail.chuo-c.jp, share IP numbers with chuo-c.jp.
Name Servers
Two name servers asns1.customer.ne.jp and asns2.customer.ne.jp handle delegation for chuo-c.jp.
chuo-c.jp uses the same name server setup as other domains, for example sub128.83.136.210.in-addr.arpa, v1800-048.mailsecure.jp, tokei-tec.co.jp, seibu-shobou.co.jp and bols.co.jp.
Host names with one IP number: The host name asns1.customer.ne.jp points to 210.150.254.86 and the host name asns2.customer.ne.jp points to 210.150.254.94.
Mail Servers
chuo-c.jp is handled by a single mail server, mail.chuo-c.jp.
mail.chuo-c.jp points to a single IP: 140.227.144.80.