A 198.16.16.0	255.255.240.0	4094	198.16.16.1  to  198.16.31.254	198.16.31.255
B 198.16.32.0	255.255.248.0	2046	198.16.32.1  to  198.16.39.254	198.16.39.255
  - 2046 address gap -
C 198.16.48.0	255.255.240.0	4094	198.16.48.1  to  198.16.63.254	198.16.63.255
D 198.16.64.0	255.255.224.0	8190	198.16.64.1  to  198.16.95.254	198.16.95.255