rk7.jp - robtex.com
rk7.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 49.212.198.153🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST 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 | ||||||
| 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 | ||||||
| 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 | ||||||
| MX | rk7.jp ⭐ | ||||||
| A | 49.212.198.153🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| TXT | v=spf1 a:www2913.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2022-11-29 #15 | ||||||
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=1784436303 | ||||||
MX for
rk7.jp |
Same first word
Similar names
7rk.de |
kr7.biz |
r7k.top |
7kr.ru |
kr7.ru |
7kr.com |
k7r.herokuapp.com |
7kr.cn |
k7r.info |
r7k.link |
kr7.com.br |
k7r.eu |
7rk.cc |
r7k.net |
k7r.de |
7kr.buzz |
7kr.net |
kr7.com.cn |
kr7.de |
kr7.net |
r7k.info |
kr7.cc |
DNS History
5 records (5 active, 0 former)
●MXrk7.jp2026-05-15 → 2026-07-19 · 2 obs
● 2026-07-19 05:27:48
●A49.212.198.1532026-05-15 → 2026-07-19 · 2 obs
● 2026-07-19 05:27:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | h.dns.jp, a.dns.jp, d.dns.jp, c.dns.jp... | - |
| rk7.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 rk7.jp (unsigned zone)
⏱️ Timing
Total: 1020ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 49.212.198.153 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | rk7.jp (pri: 10) |
| TXT | 1 | v=spf1 a:www2913.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
rk7.jp handles its own mail, functioning as its own mail server.
IP Addresses
rk7.jp resolves to just one IP address, 49.212.198.153.
Two other host names, along with fujikoumuten.co.jp, takako-trust.co.jp and nozomi-ed.jp, also share IP numbers with rk7.jp.
Name Servers
rk7.jp is served by three name servers: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
At least some of rk7.jp's name servers are shared with other domains, for example aiwolf.sakura.ne.jp, money-navi.net, iecjapan.com and two more.
These name servers tend to be used in conjunction with the name servers dns.sakura.ad.jp.
master.dns.ne.jp has IP address 210.224.172.18, ns1.dns.ne.jp has IP address 61.211.236.1 and ns2.dns.ne.jp has IP address 133.167.21.1 — one address each.
Mail Servers
rk7.jp is served by just one mail server: rk7.jp.
rk7.jp resolves to 49.212.198.153 and no other IP number.