Ultra-fast scanning of large networks and IP ranges
Masscan can scan the entire internet in less than an hour. Create a free account and get access to the world's fastest port scanner.
Create Free AccountMasscan is the world's fastest port scanner, capable of transmitting packets at a rate of 10 million per second. It can scan the entire internet (all IPv4 addresses) for a single port in less than an hour, making it an indispensable tool for security researchers and network administrators.
Mass internet scanning for security research and service distribution analytics
Rapid discovery of open ports in large corporate networks and IP ranges
Detection of services vulnerable to known vulnerabilities at internet scale
Regular scanning to track the appearance of new services in the network
Search for attacker infrastructure and command server analysis
Load testing of network infrastructure and intrusion detection systems
Masscan is a powerful tool capable of creating significant load on network infrastructure. Use it only on your own networks or with explicit written permission. Uncontrolled scanning can disrupt network operations and violate cybersecurity laws.