j-cloud.co.jp - robtex.com
j-cloud.co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2403:3a00:101:22:49:212:235:206🇯🇵 SAKURA-C2403:3a00::/32 SAKURA Internet // OSAKA BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan | ||||||
| PTR | www3466.sakura.ne.jp | ||||||
| A | 49.212.235.206🇯🇵 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 | ||||||
| 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 | j-cloud.co.jp ⭐ | ||||||
| A | 2403:3a00:101:22:49:212:235:206🇯🇵 SAKURA-C2403:3a00::/32 SAKURA Internet // OSAKA BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan | ||||||
| PTR | www3466.sakura.ne.jp | ||||||
| A | 49.212.235.206🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www3466.sakura.ne.jp | ||||||
| TXT | v=spf1 a:www3466.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2018-01-23 #0 | ||||||
co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| TXT | co.jp. | ||||||
MX for
j-cloud.co.jp |
Same first word
DNS History
6 records (6 active, 0 former)
●MXj-cloud.co.jp2020-01-14 → 2026-04-13 · 2 obs
● 2026-04-13 18:46:20
●A2403:3a00:101:22:49:212:235:2062020-01-14 → 2026-04-13 · 2 obs
● 2026-04-13 18:46:20
●A49.212.235.2062020-01-14 → 2026-04-13 · 2 obs
● 2026-04-13 18:46:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| j-cloud.co.jp | ns2.dns.ne.jp, ns1.dns.ne.jp | 2 records |
✅ Authoritative Response
Server:133.167.21.1
NS records: ns2.dns.ne.jp, ns1.dns.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for j-cloud.co.jp (unsigned zone)
⏱️ Timing
Total: 711ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 49.212.235.206 |
| AAAA | 1 | 2403:3a00:101:22:49:212:235:206 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | j-cloud.co.jp (pri: 10) |
| TXT | 1 | v=spf1 a:www3466.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
j-cloud.co.jp serves as the mail server for j-cloud.co.jp.
IP Addresses
j-cloud.co.jp points to two IP numbers: 2403:3a00:101:22:49:212:235:206 and 49.212.235.206.
Other host names such as niseko-tabi.com, mail.genuine-corporation.com, fukufu.jp, isp-will.com and u-big.sakura.ne.jp share IP numbers with j-cloud.co.jp.
Name Servers
j-cloud.co.jp is delegated to three name servers: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
At least part of the name servers for j-cloud.co.jp are shared with other domains, for instance kapatid.sakura.ne.jp, rikushinkai.net, yonao.sakura.ne.jp, hbs.gr.jp and umeda-electric.com.
These name servers are commonly used alongside 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
Mail for j-cloud.co.jp is handled by a single mail server, j-cloud.co.jp.
Hostname j-cloud.co.jp resolves to two IPs: 2403:3a00:101:22:49:212:235:206 and 49.212.235.206.