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Tools

Interactive utilities for network engineers and security practitioners.

What's My IP
Public IP and network details
Throughput Calculator
Estimate maximum theoretical throughput from a TCP window size and round-trip latency.
TCP Throughput is limited by how much unacknowledged data can be in transit at once. Larger window sizes allow more data to fill high-latency pipes before waiting for an ACK, maximizing your network link.
Subnet Calculator
Compute network, broadcast, and usable host ranges for an IPv4 CIDR block.
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# Network Broadcast Usable Range Hosts