Class Of ip address...

   * A = 00000001 - 01111111      1 - 127

 * B = 10000000 - 10000000      128 - 191

 * C = 11000000 - 11000000      192 - 223

 * D = 11100000 - 11100000      224 - 239

 * E = 11110000 - 11110000      240 - 247

kelas D = reserve
kelas E = experiment