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what does it mean when a network admin says to use the first # in the address block of 226? And he gives me the below information:

IP’s: 204.68.134.226-.231
Mask: 255.255.255.0
GW: 204.68.134.254

Does it mean that I should use 204.68.134.227 to put into my computer?

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With a 255.255.255.0 subnet mask, any address 204.68.134.1 - 204.68.134.254 are valid addresses, 204.68.134.0 will be the network address and 204.68.135.255 will be the broadcast address, so I'm guessing he means to use 204.68.134.226 although I would go back to him because if that's what he meant he should have just said so.

Edit: He may mean to check if any of the addresses in the range you specified are already in use, and if so to then use the next one.

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  • I was thinking that he meant to use .227, but this would not be the case?
    – Joe
    Jan 11, 2012 at 20:15
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    @Joe Not with a mask of 255.255.255.0, no. Jan 11, 2012 at 20:30
  • @Joe Why would you skip .226? Jan 11, 2012 at 21:28
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    @Joe's admin is being obtuse and Joe made an innocent mistake. Joe is probably thinking of the rule "Don't use the first or last IP address in an IP range", but that rule doesn't apply to this scenario, since he has been allocated a subset of addresses within the 204.68.134.0/24 subnet. An easy mistake for someone who isn't a network administrator. The admin could have been more clear. Jan 11, 2012 at 22:28

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