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  1. Why isn't 255.255.249.0 a valid subnet mask? - Super User

    Mar 30, 2021 · I was just wondering about this question above and I would greatly appreciate it if someone can explain why 255.255.249.0 isn't a valid subnet mask.

  2. Networking Question - What is a VALID Subnet Address?

    D is the broadcast address for the subnet "101" E is a valid address for the subnet "110" whcih is a valid subnet. I see this way: B and E are valid IP address and I think it's what they mean as …

  3. Is 225.225.225.128 a valid subnet mask? - Super User

    The Subnet you are working with is: 10.40.225.128/25 Your usable address range is from: 10.40.225.129 - 10.40.225.254 The network ID is: 10.40.225.128 The broadcast ID is: …

  4. What is a subnet mask, and the difference between a subnet mask …

    In more technical terms, the subnet mask helps machines identify the network number associated with a given IP address. The 255 represents all 1's for that byte of the address and when you …

  5. Why my subnet mask is not matching with my IP address?

    Feb 11, 2014 · The subnet mask determines where we make this split. IP addresses and subnet masks are written in decimal for human readability, but the computer processes them in binary.

  6. networking - Is X.Y.Z.0 a valid IP address? - Server Fault

    It depends on the subnet of the IP address in question. In general, the first and last addresses in a subnet are used as the network identifier and broadcast address, respectively. All other …

  7. networking - Non-contiguous Subnet Mask - Super User

    Is 225.225.225.128 a valid subnet mask? The accepted answer states that the subnet mask must be contiguous. A few comments reference RFCs stating that this is the case. However, I'm …

  8. networking - Unable to assign Subnet mask 255.255.255.255. The ...

    Mar 18, 2019 · Under normal circumstances, 255.255.255.255 (/32) is not a valid subnet mask. There are situations where that is a valid subnet mask, which is when you have a peer to peer …

  9. What is the diference between IP subnet mask 255.255.254 .0 ... or …

    Jul 2, 2015 · That is the ip of the subnet itself. 192.168.1.1-192.168.1.254 are all valid IPs That can be assigned to client devices. Finally, 192.168.1.255 would be the broadcast address. …

  10. networking - How does IPv4 Subnetting Work? - Server Fault

    Aug 4, 2009 · This is a Canonical Question about IPv4 Subnets. Related: How does IPv6 subnetting work and how does it differ from IPv4 subnetting? How does Subnetting Work, and …