1-only.jp - robtex.com
1-only.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2001:e42:101:1:202:181:97:71🇯🇵 SAKURA-B2001:e40::/30 SAKURA Internet Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka 530-0011, JAPAN | ||||||
| PTR | www261.sakura.ne.jp | ||||||
| A | 202.181.97.71🇯🇵 SAKURA-B202.181.96.0/20 (6/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| 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 | 1-only.jp ⭐ | ||||||
| A | 2001:e42:101:1:202:181:97:71🇯🇵 SAKURA-B2001:e40::/30 SAKURA Internet Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka 530-0011, JAPAN | ||||||
| PTR | www261.sakura.ne.jp | ||||||
| A | 202.181.97.71🇯🇵 SAKURA-B202.181.96.0/20 (6/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www261.sakura.ne.jp | ||||||
| TXT | v=spf1 a:www261.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2015-12-24 #0 | ||||||
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=1773558003 | ||||||
MX for
1-only.jp |
Same first word
Similar names
DNS History
6 records (6 active, 0 former)
●MX1-only.jp2015-06-27 → 2026-03-24 · 2 obs
● 2026-03-24 05:29:44
●A2001:e42:101:1:202:181:97:712016-02-02 → 2026-03-24 · 3 obs
● 2016-02-02 00:48:42
● 2026-03-24 05:29:44
●A202.181.97.712015-06-27 → 2026-03-24 · 2 obs
● 2026-03-24 05:29:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| 1-only.jp | ns1.dns.ne.jp, ns2.dns.ne.jp | 2 records |
✅ 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 1-only.jp (unsigned zone)
⏱️ Timing
Total: 1148ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 202.181.97.71 |
| AAAA | 1 | 2001:e42:101:1:202:181:97:71 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | 1-only.jp (pri: 10) |
| TXT | 1 | v=spf1 a:www261.sakura.ne.jp mx ~all |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns2.dns.ne.jp, ns1.dns.ne.jp)
Analysis
Mail Server Role
1-only.jp serves as the mail server for 1-only.jp.
IP Addresses
1-only.jp points to two IP numbers: 2001:e42:101:1:202:181:97:71 and 202.181.97.71.
Other host names, for instance amat.sakura.ne.jp, www261.sakura.ne.jp, nakatani-instruments.com, masatoki.jp and sputnicks.net share IP numbers with 1-only.jp.
Name Servers
The domain 1-only.jp is delegated to three name servers: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
1-only.jp shares name servers with other domains at least partially, for instance seibo-y.ed.jp, yokoishida.com, lifemetrics.jp, adultgoodsr-1.com and eijisuzuki.sakura.ne.jp.
these name servers are often used together with the name servers dns.sakura.ad.jp.
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 1-only.jp and 1-only.jp.
Host name 1-only.jp resolves to two IPs: 2001:e42:101:1:202:181:97:71 and 202.181.97.71.