ryuoffice.com - robtex.com
ryuoffice.com
com
| 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=1771291435 | ||||||
MX for
ryuoffice.com |
Subdomains
www.ryuoffice.com |
Same first word
ryuoffice.com |
DNS History
7 records (7 active, 0 former)
●NSns1.xserver.jp2026-03-21 → 2026-03-23 · 2 obs
● 2026-03-23 08:55:14
●NSns2.xserver.jp2026-03-21 → 2026-03-23 · 2 obs
● 2026-03-23 08:55:14
●NSns3.xserver.jp2026-03-21 → 2026-03-23 · 2 obs
● 2026-03-23 08:55:14
●NSns4.xserver.jp2026-03-21 → 2026-03-23 · 2 obs
● 2026-03-23 08:55:14
●NSns5.xserver.jp2026-03-21 → 2026-03-23 · 2 obs
● 2026-03-23 08:55:14
●MXryuoffice.com2026-03-21 → 2026-03-23 · 2 obs
● 2026-03-23 08:55:14
●A85.131.209.1542026-03-21 → 2026-03-23 · 2 obs
● 2026-03-23 08:55:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | f.gtld-servers.net, k.gtld-servers.net, i.gtld-servers.net, e.gtld-servers.net... | - |
| ryuoffice.com | ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp... | - |
✅ Authoritative Response
Server:157.112.182.218
NS records: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp, ns5.xserver.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ryuoffice.com (unsigned zone)
⏱️ Timing
Total: 1075ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 85.131.209.154 |
| NS | 5 | ns5.xserver.jp, ns3.xserver.jp... |
| MX | 1 | ryuoffice.com (pri: 0) |
| TXT | 1 | v=spf1 +a:sv16613.xserver.jp +a:ryuoffic |
| SOA | 1 | ns1.xserver.jp root.xserver.jp |
Analysis
Hierarchy
The parent of www.ryuoffice.com is ryuoffice.com.
Mail Server Role
ryuoffice.com serves as the mail server for ryuoffice.com.
IP Addresses
ryuoffice.com points to a single IP number: 85.131.209.154.
Other host names, for instance wakosiki.co.jp, www.ryuoffice.com, bubublog.com, mx.iso-net.co.jp and saeki-sc.com share IP numbers with ryuoffice.com.
Name Servers
ryuoffice.com is delegated to five name servers: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp and ns5.xserver.jp.
ryuoffice.com shares name servers with other domains at least partially, for instance bestsan.co.jp, agency.ne.jp, kafche.com, iino-furusatomura.com and skitop.jp.
Host names with three IP numbers:
ns1.xserver.jp points to: 202.226.36.164, 202.226.36.170 and 202.226.36.246.
ns4.xserver.jp points to: 183.90.224.226, 183.90.224.230 and 202.226.39.247.
ns5.xserver.jp points to: 157.112.182.218, 157.112.182.220 and 202.226.37.247.
Host names with one IP number:
ns2.xserver.jp points to: 35.72.43.26.
ns3.xserver.jp points to: 202.226.36.247.
Mail Servers
A single mail server handles ryuoffice.com and ryuoffice.com.
Host name ryuoffice.com resolves to IP 85.131.209.154.