This calculator returns a variety of information regarding Internet Protocol version 4 (IPv4) and IPv6 subnets including possible network addresses, usable host ranges, subnet mask, and IP class, among others.

Feb 12, 2021 · For Class C IP addresses, the first three octets (24 bits / 3 bytes) represent the network ID and the last octet (8 bits / 1 bytes) is the host ID. Class C IP Addresses range from 192.0.0.0 to 223.255.255.255, with a default subnet mask of 255.255.255.0 (or /24 in CIDR).

Some large / 8 blocks of IPv4 addresses, the former Class A network blocks, are assigned in whole to single organizations or related groups of organizations, either by the Internet Corporation for Assigned Names and Numbers (ICANN), through the Internet Assigned Numbers Authority (IANA), or a regional Internet registry.

Sep 3, 2024 · In this Subnetting Cheat Sheet, you’ll learn all the basic to advanced subnetting concepts, including CIDR notation, and IPv4 subnet masks ranging from XX.XX.XX.XX/0 to XX.XX.XX.XX/32, IPv4 wildcard mask values, classification of IPv4 addresses from Class A to Class E, and more.

Jun 27, 2023 · IP subnet cheat sheets allow administrators to take any given IP address and subnet mask and quickly determine where that IP address falls within a particular subnet.

This IPv4 Subnet Chart can assist you in looking up how a network is broken up into subnets. Class address ranges: Class A = 1.0.0.0 to 126.0.0.0; Class B = 128.0.0.0 to 191.255.0.0; Class C = 192.0.1.0 to 223.255.255.0; Reserved address ranges for private (non-routed) use: 10.0.0.0 -> 10.255.255.255; 172.16.0.0 -> 172.31.255.255; 192.168.0.0 ...

Feb 6, 2025 · How do I calculate the number of subnets with a custom subnet mask? The number of subnets is determined by the number of bits you borrow from the host portion. For example, borrowing 3 bits gives you 8 subnets (2 3 = 8).

Mar 1, 2025 · The above network is using class C network mask and /29 subnet mask means network IP can be divided into 8 subnets. Each router has a unique IP address for each linked subnetwork. There is an important point to be noticed that the more the bits we carry from the subnet mask for host ID then the more will be the subnets obtainable for the network.

A comprehensive guide to subnet masks, including detailed information on different subnet sizes and their corresponding subnet masks.