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Snippets for yer computer needs

IPv4 - subnetting

IPv4 - subnetting

Natural mask ————

First bits of address default mask Decimal
0 x x x 8 bits long < 128
1 0 x x 16 bits long 128-191
1 1 0 x 24 bits long 192-223
1 1 1 0 multicast 224-239

Greater than 239 the address is reserved