A subnet mask is a crucial tool used to partition a large network into smaller subnetworks, allowing each to function independently as a broadcast domain. This aids in efficient IP address management, preventing the waste of IP addresses in smaller networks. Each subnet mask corresponds to a range of IP addresses. At times, you might
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Subnet Mask Cheat Sheet Subnet Mask Cheat Sheet For Class C network Note: In the number of subnets column, the value outside “()” denotes the total number of subnets, while the value inside “()” denotes the number of usable subnets after two subnets have been subtracted according to RFC guidelines. Subnet Mask Cheat Sheet For
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The /16 subnet mask is a subnet mask commonly used for class A networks. It consists of IP addresses ranging from 10.0.0.0 to 10.255.255.255. /16 subnet mask is the default subnet mask for Class B networks. The dotted decimal notation for a /16 subnet mask is 255.255.0.0, which is derived from the binary representation 11111111.11111111.00000000.00000000.
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The /17 subnet mask is a subnet mask with a dotted decimal notation of 255.255.128.0 and a wildcard mask of 0.0.127.255. /17 subnet mask divides a large network into a smaller network (subnetworks). Each of the subnetworks has a range of 32768 IP addresses. The first IP in this range is the network ID, and
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The /18 subnet mask is a subnet mask with a dotted decimal notation of 255.255.192.0 and a wildcard mask of 0.0.63.255. The 18 subnet mask divides larger networks like class A and class B networks into smaller networks (subnetworks). Each of these subnetworks has a range of 16384 IP addresses. The first IP address in
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The /19 prefix length is a prefix length with a subnet mask of 255.255.224.0 and a wildcard mask of 0.0.31.255. The 19 subnet mask helps divide larger networks, like Class A and Class B networks, into smaller networks (subnetworks). Each of the subnetworks has a range of 8192 IP addresses. The first IP address in
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The /20 subnet mask is the subnet mask with dotted decimal notation of 255.255.240.0 and the wildcard mask of 0.0.15.255. /20 subnet mask divides larger networks like class A and class B networks into smaller networks (subnetworks). Each of these subnetworks has a range of 4096 IP addresses. The first IP address in this range is
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The /21 subnet mask is a subnet mask with dotted decimal notation of 255.255.248.0 and a wildcard mask of 0.0.7.255. 21 subnet masks divide larger networks, like class A networks and class B networks, into smaller networks (subnetworks). Each of the subnetworks has a range of 2048 IP addresses. The first IP address in this
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/22 A subnet mask is a subnet mask with a dotted decimal notation of 255.255.252.0 and a wildcard mask of 0.0.3.255. /22 subnet masks divide larger networks, like class A and class B networks, into smaller networks (subnetworks). Each of the subnetworks has a range of 1024 IP addresses. The first IP address in this
/23 subnet mask is a subnet mask with 255.255.254.0 as the dotted decimal notation and 0.0.1.255 as the wildcard mask. /23 subnet mask divide larger network like class B network and Class A networks into a smaller networks(subnetworks). Each of the subnetworks has 512 range of IP addresses. The first IP address in this range
