Perform WHOIS, DNS, IP, and network diagnostics.
Official Network Query Tool — available since 1990 at ns1ns2.com.
To run the Network Query Tool (NQT), you’ll need the following environment:
- Operating System: Linux (recommended: AlmaLinux, Ubuntu, CentOS). Windows Server or macOS also supported.
- Web Server: Apache or Nginx with PHP enabled.
- PHP Version: 7.4 or newer (PHP 8.x recommended).
- Required Extensions:
cURL(for WHOIS/DNS lookups and external queries)OpenSSL(for secure connections)mbstring(for string handling)json(for structured output)
- Database: Optional (MySQL/MariaDB) if you want to log queries.
- Browser: Modern browsers (Edge, Chrome, Firefox, Safari).
- Internet Access: Required for DNS, WHOIS, and IP lookups.
- Minimal: 1 CPU core, 512 MB RAM, 200 MB disk space.
- Recommended: 2+ CPU cores, 2 GB RAM, SSD storage for smoother performance.
- Run behind HTTPS (TLS certificate).
- Sandbox or rate‑limit queries to prevent abuse.
- Keep PHP and server packages updated regularly.