Network Service Scanner

Network Service Scanner is a fast and precise tool for detecting active network services by sending real protocol requests—not just checking whether ports are open.

It supports 70+ well-known services over TCP, UDP, and TLS and validates each service by interpreting the actual response, ensuring accurate results even in complex or filtered networks.

You can scan any IP range, whether inside your LAN or across remote segments, as long as the devices are reachable. Enter the IP range, and the tool will automatically send relevant requests for each service (e.g., DNS queries, HTTP requests, and SSH handshakes) and validate their responses.

Results are displayed in a clear summary view, showing the total services scanned, validated responses, and scan duration. Interactive filters allow you to instantly group hosts by detected services, making it easy to spot vulnerable or legacy systems exposing protocols like FTP or Telnet.

Typical scans check tens of thousands of services in under 20 seconds. It’s ideal for service discovery, pre-deployment audits, and network hygiene checks.

This tool is part of the NetCrunch Admin Toolset, a free collection of no-install Windows utilities for IT teams.

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Features

• Scans any IP range — local or remote — for 70+ known services
• Sends real protocol requests (DNS, HTTP, FTP, TLS, etc.)
• Verifies service availability with accurate response validation
• Includes summary view with scan time, host count, and service filters
• Fast, standalone, and 100% free for network professionals

Requires Windows 10 x64 or later.
Uses AdRem Application Engine (Chromium-based runtime), downloaded automatically if missing.