Networking

Subnet, IP, DNS, and port reference tools

What Is My IP Address

What is my IP Address? Check your IP address, location, ISP, and network details instantly on a map. Free IP lookup - no signup, runs in your browser.

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Subnet Calculator

Calculate CIDR, subnet mask, host range, and network details.

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IP Address Converter

Convert IP addresses between decimal, binary, and hex formats.

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IPv4 / IPv6 Validator

Validate IPv4 and IPv6 address formats.

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MAC Address Generator

Generate random MAC addresses with format options.

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MAC Address Vendor Lookup

Look up manufacturer from MAC address OUI prefix.

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Port Number Reference

Reference guide for well-known TCP/UDP port numbers.

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TCP / UDP Protocol Reference

Reference guide for common TCP and UDP protocols.

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DNS Record Type Reference

Reference guide for DNS record types and their purposes.

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HTTP Method Reference

Reference for HTTP methods with descriptions and use cases.

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HTTP Status Code Quick Reference

Quick reference for all HTTP status codes by category.

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SSL/TLS Version Reference

Reference for SSL/TLS protocol versions and security status.

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Network Bandwidth Calculator

Calculate transfer time from file size and bandwidth.

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Download Time Calculator

Estimate download time for a file at a given speed.

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Latency / Ping Estimator

Estimate network latency based on distance between locations.

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MTU Size Reference

Reference for Maximum Transmission Unit sizes by network type.

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