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Is 0.0.0.0 a valid subnet mask

2020 Archive

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Answer to What is the 2nd octet of of the subnet mask that creates 1024 subnets for 70.0.0.0 0 64 128 255

30 Jan 2017 The following are all valid, and used, bit numbering conventions for describing an 8 Since the advent of CIDR the term subnetmask is rarely used. Every IP address when BITWISE ANDed with 0.0.0.0 gives a 0.0.0.0 result, 

24 Oct 2018 Technically, 0.0.0.0 and 255.255.255.255 fits the rules but you would never Due to this, the only real valid numbers for a subnet mask are: