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The 2nd does not make sense, the first means all the subnets that are not in the range from 217.220.32.0/24 to 217.220.47.0/24.
Also it's better to include the IPs inside ^ and $ so they are not ambiguous. So in your case, use:
My Client has provided me with: 217.220.32.120/27?
Are you sure about that, because according to the subnet calculator the valid ips are 217.220.32.97 to 217.220.32.126.
If that's the case use either one of the following:
Are you sure it's working?
Because your condition will match for IPs not in the range 217.72.112.320 to 217.72.112.3227. Since these IPs do not exist actually, it will match any other host!!!
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