Network Tools

Freshness

Last updated: 2026-06-10.

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What This Tool Does

A utility for IP address manipulation, subnet calculations, and network-related operations commonly needed in network administration, security analysis, and infrastructure automation. IP address conversion functions translate between IPv4 dotted decimal notation, 32-bit binary representation, and integer formats for low-level network programming and analysis. The subnet calculator takes CIDR notation and returns comprehensive network information including network address, broadcast address, netmask, wildcard mask, first and last usable addresses, total and usable host counts, and IP class classification. CIDR to range conversion lists all IP addresses within a subnet block with sample addresses for large ranges. IP range membership checking determines whether a specific address falls within a given CIDR block. MAC address formatting converts hardware addresses between colon-separated, dash-separated, Cisco dot notation, and plain formats. Port validation identifies well-known service associations for common ports and classifies numbers as well-known, registered, or dynamic ranges. DNS lookup resolves hostnames to IP addresses with support for multiple A records, while reverse DNS finds hostnames associated with IP addresses. IP information analysis identifies address class, private versus public status, loopback, multicast, and reserved designations. Additional utilities include random IPv6 generation, private IP range detection with specific range identification, and CIDR notation validation with automatic correction suggestions.

Product Instructions

Network Tools

Perform IP address conversions, subnet calculations, MAC address formatting, port validation, DNS lookups, and other networking utilities.

Actions

network-ipv4-to-binary

Convert an IPv4 address to its binary representation.