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  2. Feb 12, 2021 · As a developer or network engineer, you may need to occasionally look up subnet mask values and figure out what they mean. To make your life easier, the freeCodeCamp community has made this simple cheat sheet. Just scroll or use Ctrl/Cmd + f to find the value you're looking for.

  3. www.calculator.net › ip-subnet-calculatorIP Subnet Calculator

    This IP subnet calculator covers both IPv4 and IPv6 protocols, providing information such as IP address, network address, subnet mask, IP range, and more.

    Prefix Size
    Network Mask
    Usable Hosts Per Subnet
    /1
    128.0.0.0
    2,147,483,646
    /2
    192.0.0.0
    1,073,741,822
    /3
    224.0.0.0
    536,870,910
    /4
    240.0.0.0
    268,435,454
  4. Aug 19, 2022 · The CIDR number comes from the number of ones in the subnet mask when converted to binary. The subnet mask 255.255.255.0 is 11111111.11111111.11111111.00000000 in binary. This adds up to 24 consecutive ones, or /24 (pronounced “slash twenty four”).

  5. Jul 7, 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.

  6. Apr 22, 2024 · A subnet mask helps you define and identify different network segments while a subnet is a specific instance of one of those segments. Examples of how you might see a subnet mask represented are 255.255.255.0 (dotted decimal), /24 (CIDR), 11111111111111111111100000000 (binary), or 0xffffff00 (hexadecimal).

  7. May 12, 2022 · A class C network would have a subnet mask of 255.255.255.0 which means that 24 bits are used for the network. In CIDR notation this is designated by a /24 following the IP address. So: IP address 192.168.1.168 subnet mask 255.255.255.0 is written as: 192.168.1.168/24 in CIDR notation.

  8. What is a subnet mask? A subnet mask is like an IP address, but for only internal usage within a network. Routers use subnet masks to route data packets to the right place. Subnet masks are not indicated within data packets traversing the Internet — those packets only indicate the destination IP address, which a router will match with a subnet.