Error in Advanced IP Calculator


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  Views: 8215Topic:: «Error in Advanced IP Calculator» on forum: Free Network Utilities by Famatech
For Network types Class A and Class B allright.
For Network type Class C - Subnets - for all "Mask" all "Mask bits" are on 1 unit bigger:
Mask - Mask bits 9 (must be 8).
I'm about to network from England to the UK since I update websites and want to be able to work on my USA machine from the UK. Can anyone give me any pointers on doing this. I am a networking mature student and build web sites for a living in the States.
Heidi :?:
There is no such mask as "" for class C network. Please, describe detailed what input value do you enter and there is wrong value - i can fix it in no time.

You can also contact me via

Best regards, Gregor Petrov, Famatech Support Team
Gregor Famatech Support!,
I have also come across the originally reported issue... maybe I can explain it a little better:

When you choose Class C network, it is not possible to choose a subnet mask of, thus using all 8 bits of the last octet for hosts. The best you can do is which reserves 1 bit for subnet and only 7 bits for hosts. In other words, the calculator does not provide the option for zero subnet bits.

Can you fix? Thanks,

This is done due to IP subnetting RFC (i.e., it's a standard). "IP Address Calculator" is used to calculate subnets and other parameters of IP using standards defined in RFC.

Best regards, Gregor Petrov, Famatech Support Team
Best regards, Gregor Petrov, Famatech
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