fu-u.net - robtex.com
fu-u.net
| DNSSEC | ⚠️ Not signed | ||||||
| A | 219.94.192.75🇯🇵 SAKURA-C219.94.128.0/17 (3/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www1665.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 | fu-u.net ⭐ | ||||||
| A | 219.94.192.75🇯🇵 SAKURA-C219.94.128.0/17 (3/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan | ||||||
| PTR | www1665.sakura.ne.jp | ||||||
| TXT | v=spf1 a:www1665.sakura.ne.jp mx ~all | ||||||
| SOA | master.dns.ne.jptech@sakura.ad.jp 2017-10-20 #21 | ||||||
net
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1771291465 | ||||||
MX for
fu-u.net |
Same first word
DNS History
5 records (5 active, 0 former)
●MXfu-u.net2017-10-21 → 2026-03-23 · 2 obs
● 2026-03-23 15:20:14
●A219.94.192.752017-10-21 → 2026-03-23 · 2 obs
● 2026-03-23 15:20:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| fu-u.net | ns1.dns.ne.jp, ns2.dns.ne.jp | - |
✅ Authoritative Response
Server:133.167.21.1
NS records: ns1.dns.ne.jp, ns2.dns.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for fu-u.net (unsigned zone)
⏱️ Timing
Total: 976ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 219.94.192.75 |
| NS | 2 | ns1.dns.ne.jp, ns2.dns.ne.jp |
| MX | 1 | fu-u.net (pri: 10) |
| TXT | 1 | v=spf1 a:www1665.sakura.ne.jp mx ~all |
| SOA | 1 | master.dns.ne.jp tech.sakura.ad.jp |
Analysis
Mail Server Role
The mail server for fu-u.net is fu-u.net.
IP Addresses
fu-u.net maps to IP address 219.94.192.75.
Other host names, for instance takayanagi-einou.com, kato904.sakura.ne.jp, tohruru.com, edoakari.com and obkaken.com share IP numbers with fu-u.net.
Name Servers
fu-u.net is delegated to name servers master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.
fu-u.net at least partially shares name servers with other domains such as dycoc.jp, hikonejc.sakura.ne.jp, kachikachi.jp, ueno-jibika.com and aitana.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 fu-u.net.
fu-u.net points to one IP number: 219.94.192.75.