Quote:
They are what determine if a packet stays on the LAN or is passed to the WAN. Given the list of static addresses earlier the mask should have been 255.255.255.216 216 is 39 after it was converted to binary, had all the digits inverted and then converted back to decimal.

Hope someone else will correct this if wrong.

You are wrong. I'm not entirely sure what you're saying, but you're wrong. The .248 netmask fits the address he gave (.33 to .38) perfectly.
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Bitt Faulk