chuo-u.org - robtex.com
chuo-u.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 210.224.185.34🇯🇵 SAKURA-C210.224.160.0/19 (1/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www2424.sakura.ne.jp | ||||||
| NS | master.dns.ne.jp ⭐ | ||||||
| A | 210.224.172.18🇯🇵 SAKURA-C210.224.160.0/19 (1/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | master.dns.ne.jp | ||||||
| NS | ns1.dns.ne.jp | ||||||
| A | 61.211.236.1🇯🇵 SAKURA-B61.211.236.0/24 (4/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | ns1.dns.ne.jp | ||||||
| NS | ns2.dns.ne.jp | ||||||
| A | 133.167.21.1🇯🇵 SAKURA-C133.167.21.0/24 (OSAKA) SAKURA Internet // WEST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka, Osaka 530-0011, Japan | ||||||
| PTR | ns2.dns.ne.jp | ||||||
| MX | chuo-u.org ⭐ | ||||||
| A | 210.224.185.34🇯🇵 SAKURA-C210.224.160.0/19 (1/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www2424.sakura.ne.jp | ||||||
| TXT | v=spf1 a:www2424.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2026-02-12 #1 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1776033533 | ||||||
MX for
chuo-u.org |
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●MXchuo-u.org2015-07-08 → 2026-04-12 · 2 obs
● 2026-04-12 22:57:20
●A210.224.185.342015-07-08 → 2026-04-12 · 2 obs
● 2026-04-12 22:57:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | d0.org.afilias-nst.org, b0.org.afilias-nst.org, b2.org.afilias-nst.org | - |
| chuo-u.org | ns1.dns.ne.jp, ns2.dns.ne.jp | - |
✅ Authoritative Response
Server:61.211.236.1
NS records: ns1.dns.ne.jp, ns2.dns.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for chuo-u.org (unsigned zone)
⏱️ Timing
Total: 642ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 210.224.185.34 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | chuo-u.org (pri: 10) |
| TXT | 1 | v=spf1 a:www2424.sakura.ne.jp mx ~all |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
Analysis
Mail Server Role
chuo-u.org serves as the mail server for chuo-u.org.
IP Addresses
chuo-u.org points to a single IP number: 210.224.185.34.
Other host names, for instance pinkflamingo.jp, shibata-naika.com, hdco.jp, iwaihome.jp and doubaken.com share IP numbers with chuo-u.org.
Name Servers
The domain chuo-u.org is delegated to three name servers: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
chuo-u.org shares name servers with other domains at least partially, for instance alpha-land.net, brinike.com, sunday-pm.com, mail.fukudafarm.jp and atcgolf.com.
Host names with a single IP number:
master.dns.ne.jp points to 210.224.172.18.
ns1.dns.ne.jp points to 61.211.236.1.
ns2.dns.ne.jp points to 133.167.21.1.
Mail Servers
A single mail server handles chuo-u.org and chuo-u.org.
Host name chuo-u.org resolves to IP 210.224.185.34.