MySQL : Miscellaneous Functions

`INET_ATON()`	Return the numeric value of an IP address
`INET_NTOA()`	Return the IP address from a numeric value

INET_ATON(expr)Given the dotted-quad representation of a network address as a string, returns an integer that represents the numeric value of the address. Addresses may be 4- or 8-byte addresses.
```
mysql> SELECT INET_ATON('209.207.224.40');
        -> 3520061480
```
The generated number is always in network byte order. For the example just shown, the number is calculated as 209×256³ + 207×256² + 224×256 + 40.

INET_ATON() also understands short-form IP addresses:
```
mysql> SELECT INET_ATON('127.0.0.1'), INET_ATON('127.1');
        -> 2130706433, 2130706433
```
Note

When storing values generated by INET_ATON(), it is recommended that you use an INT UNSIGNED column. If you use a (signed) INT column, values corresponding to IP addresses for which the first octet is greater than 127 cannot be stored correctly. See Section 10.2, “Numeric Types”.
INET_NTOA(expr)Given a numeric network address in network byte order (4 or 8 byte), returns the dotted-quad representation of the address as a string.
```
mysql> SELECT INET_NTOA(3520061480);
        -> '209.207.224.40'
```