3on.co.jp - robtex.com
3on.co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 163.43.102.84🇯🇵 SAKURA-B163.43.0.0/16 (TOKYO) SAKURA Internet // EAST JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan | ||||||
| PTR | www3874.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 | 3on.co.jp ⭐ | ||||||
| A | 163.43.102.84🇯🇵 SAKURA-B163.43.0.0/16 (TOKYO) SAKURA Internet // EAST JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan | ||||||
| PTR | www3874.sakura.ne.jp | ||||||
| TXT | v=spf1 a:www3874.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2023-12-22 #1 | ||||||
co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| TXT | co.jp. | ||||||
MX for
3on.co.jp |
Same first word
Similar names
DNS History
9 records (5 active, 4 former)
●NSmaster.dns.ne.jp2026-03-26 → 2026-04-14 · 3 obs
● 2026-03-26 12:37:10
● 2026-04-14 04:08:20
●NSns1.dns.ne.jp2026-03-26 → 2026-04-14 · 3 obs
● 2026-03-26 12:37:10
● 2026-04-14 04:08:20
●NSns2.dns.ne.jp2026-03-26 → 2026-04-14 · 3 obs
● 2026-03-26 12:37:10
● 2026-04-14 04:08:20
○NSns4.wixdns.net2019-12-13 → 2019-12-13 · 3 obs
○ 2026-03-26 12:37:10
○ 2026-04-14 04:08:20
○NSns5.wixdns.net2019-12-13 → 2019-12-13 · 3 obs
○ 2026-03-26 12:37:10
○ 2026-04-14 04:08:20
●MX3on.co.jp2026-03-26 → 2026-04-14 · 3 obs
● 2026-03-26 12:37:10
● 2026-04-14 04:08:20
○MXmail.3on.co.jp2019-12-13 → 2019-12-13 · 3 obs
○ 2026-03-26 12:37:10
○ 2026-04-14 04:08:20
●A163.43.102.842026-03-26 → 2026-04-14 · 3 obs
● 2026-03-26 12:37:10
● 2026-04-14 04:08:20
○A23.236.62.1472019-12-13 → 2019-12-13 · 3 obs
○ 2026-03-26 12:37:10
○ 2026-04-14 04:08:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| 3on.co.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 3on.co.jp (unsigned zone)
⏱️ Timing
Total: 873ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 163.43.102.84 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | 3on.co.jp (pri: 10) |
| TXT | 1 | v=spf1 a:www3874.sakura.ne.jp mx ~all |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.dns.ne.jp, ns2.dns.ne.jp)
Analysis
Mail Server Role
The mail server for 3on.co.jp is 3on.co.jp.
IP Addresses
3on.co.jp maps to IP address 163.43.102.84.
Other host names, for instance beru-petclinic.com, sarogom.com, sinkoushoukai.com, www3874.sakura.ne.jp and lei-park.com share IP numbers with 3on.co.jp.
Name Servers
3on.co.jp is delegated to name servers master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
3on.co.jp at least partially shares name servers with other domains such as hayashi-shipping.com, madzmori.net, tomonoki.net, e-maeda.info and 2blueline.jp.
these name servers are commonly used with the name servers dns.sakura.ad.jp.
Host names with a single IP:
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
One mail server serves 3on.co.jp.
3on.co.jp points to one IP number: 163.43.102.84.