cortexusa.com - robtex.com
cortexusa.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=1778349401 | ||||||
MX for
cortexusa.com |
Same first word
cortexusa.com |
Similar names
DNS History
7 records (7 active, 0 former)
●NSns1.xserver.jp2015-07-07 → 2026-05-09 · 2 obs
● 2026-05-09 18:08:50
●NSns2.xserver.jp2015-07-07 → 2026-05-09 · 2 obs
● 2026-05-09 18:08:50
●NSns3.xserver.jp2015-07-07 → 2026-05-09 · 2 obs
● 2026-05-09 18:08:50
●NSns4.xserver.jp2015-07-07 → 2026-05-09 · 2 obs
● 2026-05-09 18:08:50
●NSns5.xserver.jp2015-07-07 → 2026-05-09 · 2 obs
● 2026-05-09 18:08:50
●MXcortexusa.com2015-07-07 → 2026-05-09 · 2 obs
● 2026-05-09 18:08:50
●A157.112.189.232015-07-07 → 2026-05-09 · 2 obs
● 2026-05-09 18:08:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | j.gtld-servers.net, l.gtld-servers.net, k.gtld-servers.net, h.gtld-servers.net... | - |
| cortexusa.com | ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp... | - |
✅ Authoritative Response
Server:35.72.43.26
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 cortexusa.com (unsigned zone)
⏱️ Timing
Total: 1123ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 157.112.189.23 |
| NS | 5 | ns5.xserver.jp, ns2.xserver.jp... |
| MX | 1 | cortexusa.com (pri: 0) |
| TXT | 1 | v=spf1 +a:sv1022.xserver.jp +a:cortexusa |
| SOA | 1 | ns1.xserver.jp root.sv0.xserver.jp |
Analysis
Mail Server Role
cortexusa.com serves as a mail server for cortexusa.com.
IP Addresses
cortexusa.com points to a single IP: 157.112.189.23.
Other host names, for instance iwataseal.com, hokkaido-jingisukan.com, souzoku-nagoyashi.com, saito-k.com and nekolob.com share IP numbers with cortexusa.com.
Name Servers
cortexusa.com is delegated to five name servers: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp and ns5.xserver.jp.
cortexusa.com at least partially shares its name servers with other domains, for instance peacering.net, syuukyakubu.com, tamuranaika-polaris.com, rod-design.co.jp and nanacoro.net.
Host names with three IP numbers:
The host name ns1.xserver.jp points to: 202.226.36.164, 202.226.36.170 and 202.226.36.246.
The host name ns4.xserver.jp points to: 183.90.224.226, 183.90.224.230 and 202.226.39.247.
The host name ns5.xserver.jp points to: 157.112.182.218, 157.112.182.220 and 202.226.37.247.
Host names with one IP number:
The host name ns2.xserver.jp points to: 35.72.43.26.
The host name ns3.xserver.jp points to: 202.226.36.247.
Mail Servers
cortexusa.com is handled by a single mail server.
cortexusa.com points to IP number 157.112.189.23.