Networking Articles
Use these articles when you need a stronger grasp of subnetting, address planning, and IP notation before applying changes to live systems.
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Calculate network range, usable hosts, subnet mask, broadcast address, and more.
CIDR ↔ Subnet Mask Converter
Convert between CIDR notation and dotted-decimal subnet masks.
Private vs Public IP Checker
Check whether an IPv4 address is private, public, or special-use.
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Private vs Public IP Addresses Explained
Learn the difference between private and public IP addresses, how special-use ranges fit in, and why correct IP classification matters in troubleshooting.
CIDR Cheat Sheet for Common Subnet Sizes
Use this CIDR cheat sheet to quickly compare common subnet sizes, masks, block sizes, and usable host counts during subnet planning and troubleshooting.
How to Calculate a Subnet Range Step by Step
A practical guide to calculating network address, broadcast address, and usable host range from an IP address and subnet size.
What Is a Subnet Mask? Explained Clearly
Learn what a subnet mask does, how it separates network and host portions of an IPv4 address, and how it relates to CIDR and usable ranges.
What Is CIDR Notation? Explained with Examples
Learn what CIDR notation means, how slash prefixes like /24 and /27 define IP ranges, and how CIDR relates to subnet masks and routing.