> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/inet_aton.md).

# INET\_ATON

## Syntax

```bnf
INET_ATON(expr)
```

## Description

Given the dotted-quad representation of an IPv4 network address as a string, returns an integer that represents the numeric value of the address. Addresses may be 4- or 8-byte addresses.

Returns `NULL` if the argument is not understood.

## Examples

```sql
SELECT INET_ATON('192.168.1.1');
+--------------------------+
| INET_ATON('192.168.1.1') |
+--------------------------+
|               3232235777 |
+--------------------------+
```

This is calculated as follows: 192 x 2563 + 168 x 256 2 + 1 x 256 + 1.

## See Also

* [INET6\_ATON()](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/inet6_aton.md)
* [INET\_NTOA()](/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/inet_ntoa.md)

<sub>*This page is licensed: GPLv2, originally from*</sub> [<sub>*fill\_help\_tables.sql*</sub>](https://github.com/MariaDB/server/blob/main/scripts/fill_help_tables.sql)

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