Below I will translate from decimal to binary just for the second octet

The theory says the IP range is: with addresses ranging between

that translates to:
172.00001110.0.0 with mask on the next line

So the base address for this range is:

172.00000000.0.0 which is and not

where is the mistake here ? ☺


1 Answer 1


You didn't convert correct from decimal to binary. 172.16 = 10101100.00010000

  • Thanks...to early in the morning for me :-) Some times we fail to observe the most basic things
    – MiniMe
    Commented Jan 26, 2014 at 17:50

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