Nmap Online Scanner

Professional network port scanning with Nmap. Discover open ports, services, and versions on any target.

Free Tool No Installation Required

Scan Configuration

Enter an IP address or domain name to scan
Specific ports or ranges (e.g., 80,443,22 or 1-1000)

Scan Types

Quick Scan

Fast scan of the top 100 most common ports

TCP Connect

Complete TCP connection to each port

SYN Stealth

Half-open scan, more stealthy

UDP Scan

Scan UDP ports (slower)

Version Detection

Detect service versions

Legal Notice

Only scan systems you own or have explicit permission to test. Unauthorized scanning may violate laws and terms of service.