function subnet-table(){
echo "--------------------------------------------------------------------------"
echo "| Bit Length |  Max Hosts  |   Subnet Mask   | Binary Mask | Mask Length |"
echo "--------------------------------------------------------------------------"
echo "|     0      |     1       | 255.255.255.255 |  11111111   |      32     |"
echo "|     0      |     2       | 255.255.255.254 |  11111110   |      31     |"
echo "|     0      |     4       | 255.255.255.252 |  11111100   |      30     |"
echo "|     0      |     8       | 255.255.255.248 |  11111000   |      29     |"
echo "|     0      |     16      | 255.255.255.240 |  11110000   |      28     |"
echo "|     0      |     32      | 255.255.255.224 |  11100000   |      27     |"
echo "|     0      |     64      | 255.255.255.192 |  11000000   |      26     |"
echo "|     0      |     128     | 255.255.255.128 |  10000000   |      25     |"
echo "|     0      |     256     | 255.255.255.0   |  11111111   |      24     |"
echo "|     0      |     512     | 255.255.254.0   |  11111110   |      23     |"
echo "|     0      |     1024    | 255.255.252.0   |  11111100   |      22     |"
echo "|     0      |     2048    | 255.255.248.0   |  11111000   |      21     |"
echo "|     0      |     4096    | 255.255.240.0   |  11110000   |      20     |"
echo "|     0      |     8192    | 255.255.224.0   |  11100000   |      19     |"
echo "|     0      |     16384   | 255.255.192.0   |  11000000   |      18     |"
echo "|     0      |     32768   | 255.255.128.0   |  10000000   |      17     |"
echo "|     0      |     65536   | 255.255.0.0     |  11111111   |      16     |"
echo "|     0      |     131072  | 255.255.0.0     |  11111110   |      15     |"
echo "|     0      |     262144  | 255.254.0.0     |  11111100   |      14     |"
echo "|     0      |     524288  | 255.252.0.0     |  11111000   |      13     |"
echo "|     0      |     1048576 | 255.240.0.0     |  11110000   |      12     |"
echo "|     0      |     2097152 | 255.224.0.0     |  11100000   |      11     |"
echo "|     0      |     4194304 | 255.192.0.0     |  11000000   |      10     |"
echo "|     0      |     8388608 | 255.128.0.0     |  10000000   |      9      |"
echo "|     0      |     16777216| 255.0.0.0       |  11111111   |      8      |"
echo "--------------------------------------------------------------------------"
}