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Subnet Mask Question

From: Pat McCormick
Date: Sunday, August 23, 1998
Time: 3:57:00 pm

I have a customer with a subnet mask of 255.255.255.128 His current Internic
domain lists a primary NS at xxx.xxx.xxx.130 and it works.

His QuickDNS data includes addresses both above and below .128 He has
machines currently addressed both above and below xxx.xxx.xxx.128. I
thought that this mask restricted available addresses to either those above
or below 128 (I can't remember which).

What address range should he be using with his mask? What happens to
addresses within the same class C, but on 'the other side' of the mask?

-Pat



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