Simplify management and monitoring with NetworkCalc Pro

Network Tools and Calculators

Online Subnet Calculator

Use CIDR notation to quickly look up details of IPv4 subnets and CIDR blocks.

DNS Tools

Look up DNS records for a hostname like ''.
DNS Tools

Security Tools

Look up security of websites, including SSL and TLS certificates.
DNS Tools

Binary Converter

Convert between binary, octal, decimal, and hexadecimal.
DNS Tools

Domain Management Made Simple

NetworkCalc has everything you need to build, manage, and monitor your domains and websites.

We help you simplify domain management with a wide range of easy-to-use tools.

Get access to network APIs that you can integrate into your environment to supercharge your network.

About NetworkCalc

NetworkCalc is a suite of online tools and APIs for building, managing, and monitoring your networks. With our easy-to-use tools and account features, you can keep your domains up-to-date in a just few clicks.

By leveraging our powerful APIs, you can quickly calculate subnets directly from the command line. With built-in capabilities, integrate domain management and monitoring into your own applications or use our streamlined web interface.

Use your favorite command-line tools or programming languages to interface with NetworkCalc:

  • Bash
  • PowerShell
  • Command Prompt
  • Terminal
  • Python
  • JavaScript

The Subnet API is an essential tool for network engineers. It allows you perform subnet calculations on the fly or from a web service or application. This makes building subnets and troubleshooting network issues easy! See how it works with Command Prompt in the video below:

NetworkCalc's tools allow for easy management of your networks and domains, whether you are an experienced network expert or just getting started. NetworkCalc is perfect for:

  • Network Engineers
  • Network Administrators
  • System Administrators
  • Email Administrators
  • Students
  • Home Lab Enthusiasts
  • Developers
  • Product Managers

See what NetworkCalc has to offer and remember to share and bookmark your favorite tools: