o2-system.com - robtex.com
o2-system.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=1778627796 | ||||||
MX for
o2-system.com |
Same first word
o2-system.com |
DNS History
7 records (7 active, 0 former)
●NSns1.xserver.jp2026-02-26 → 2026-05-12 · 2 obs
● 2026-05-12 23:40:38
●NSns2.xserver.jp2026-02-26 → 2026-05-12 · 2 obs
● 2026-05-12 23:40:38
●NSns3.xserver.jp2026-02-26 → 2026-05-12 · 2 obs
● 2026-05-12 23:40:38
●NSns4.xserver.jp2026-02-26 → 2026-05-12 · 2 obs
● 2026-05-12 23:40:38
●NSns5.xserver.jp2026-02-26 → 2026-05-12 · 2 obs
● 2026-05-12 23:40:38
●MXo2-system.com2026-02-26 → 2026-05-12 · 2 obs
● 2026-05-12 23:40:38
●A162.43.122.1332026-02-26 → 2026-05-12 · 2 obs
● 2026-05-12 23:40:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| o2-system.com | ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp... | - |
✅ Authoritative Response
Server:202.226.36.164
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 o2-system.com (unsigned zone)
⏱️ Timing
Total: 4772ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 162.43.122.133 |
| NS | 5 | ns3.xserver.jp, ns4.xserver.jp... |
| MX | 1 | o2-system.com (pri: 0) |
| TXT | 1 | v=spf1 +a:sv14532.xserver.jp +a:o2-syste |
| SOA | 1 | ns1.xserver.jp root.xserver.jp |
Analysis
Mail Server Role
o2-system.com serves as a mail server for o2-system.com.
IP Addresses
o2-system.com points to a single IP: 162.43.122.133.
Other host names, for instance sv14532.xserver.jp, dental-sugimoto.jp, sxp.jp, abeshika-clinic.com and takasaki-whitening.com share IP numbers with o2-system.com.
Name Servers
o2-system.com is delegated to five name servers: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp and ns5.xserver.jp.
o2-system.com partially shares name servers with other domains; examples include bowwow01.com, mama-in-bloom.com, ixchelsendai.com, suzu-kodomo-cl.com and morisei.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
o2-system.com is handled by a single mail server, o2-system.com.
o2-system.com points to a single IP: 162.43.122.133.