While that module does work with ranges of addresses ('20.34.101.207 - 201.3.9.99' is the example in its documentation), doesn't look to deal with the syntax the OP is dealing with (with embedded ranges for the separate octets).

  DB<1> x Net::IP->new( "10.0.2.3-5" )
  empty array
                                                                      
+            
  DB<2> x Net::IP->new( "10.0.2.3-10.0.2.5" )
0  Net::IP=HASH(0x198db00)
   'binip' => 00001010000000000000001000000011
   'ip' => '10.0.2.3'
   'ipversion' => 4
   'is_prefix' => 0
   'last_bin' => 00001010000000000000001000000101
   'last_ip' => '10.0.2.5'
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True, and perhaps I should have elaborated as did grinder in the tentative solution presented below.