f28.jp - robtex.com
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f28.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 219.94.128.90🇯🇵 SAKURA-C | ||||||
| PTR | www880.sakura.ne.jp | ||||||
| NS | master.dns.ne.jp ⭐ | ||||||
| A | 210.224.172.18🇯🇵 SAKURA-C | ||||||
| PTR | master.dns.ne.jp | ||||||
| NS | ns1.dns.ne.jp | ||||||
| A | 61.211.236.1🇯🇵 SAKURA-B | ||||||
| PTR | ns1.dns.ne.jp | ||||||
| NS | ns2.dns.ne.jp | ||||||
| A | 133.167.21.1🇯🇵 SAKURA-C | ||||||
| PTR | ns2.dns.ne.jp | ||||||
| MX | f28.jp ⭐ | ||||||
| A | 219.94.128.90🇯🇵 SAKURA-C | ||||||
| PTR | www880.sakura.ne.jp | ||||||
| TXT | v=spf1 a:www880.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2025-10-12 #2 | ||||||
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=1771290902 | ||||||
MX for
f28.jp |
Same first word
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DNS History
5 records (5 active, 0 former)
●MXf28.jp2015-07-09 → 2026-02-17 · 2 obs
● 2026-02-17 20:05:54
●A219.94.128.902015-07-09 → 2026-02-17 · 2 obs
● 2026-02-17 20:05:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| f28.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 f28.jp (unsigned zone)
⏱️ Timing
Total: 1174ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 219.94.128.90 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | f28.jp (pri: 10) |
| TXT | 1 | v=spf1 a:www880.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)
AI analysis
f28.jp serves as the mail server for f28.jp.
f28.jp points to a single IP address: 219.94.128.90.
Other host names such as craftokei.sakura.ne.jp, mail.and--c.com, satomi-makoto.sakura.ne.jp, mcs-web.jp and okesitamari.sakura.ne.jp share IP numbers with f28.jp.
f28.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 f28.jp are shared with other domains, for instance kawabata-osteopathy.com, ohashi-c.com, kensetsu-assist.com, sa-ri.org and nakaigumi.sakura.ne.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 for f28.jp is handled by a single mail server, f28.jp.
Host f28.jp points to IP 219.94.128.90.