single or multiple range statement

[VKR V]

Hello Everyone,
  In my network I have to define a network of 10.10.0.0 255.255.224.0. When I specify statement like -
   
  pool {
     range 10.10.16.0   10.10.31.254
  }
   
  ISC DHCP server throw error and doesn't allow me to configure that range. However, when I specify multiple ranges like -
   
  pool {
     range 10.10.16.0  10.10.16.255
     range 10.10.24.0  10.10.24.255
     range 10.10.28.0  10.10.28.255
     range 10.10.30.0  10.10.30.255
     range 10.10.31.0  10.10.31.254
  }
   
  there is no problem. But if this is the only way to configure it then it is weird. I am missing something?
   
  -VRK
 		
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