MySQLdata validation

Validate IP Address in MySQL with REGEXP

Use MySQL REGEXP to validate IPv4 addresses in your database. SQL query examples to filter valid and invalid IP records.

The Regex Pattern

Regex pattern

^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$

Use this pattern with MySQL's REGEXP operator.

MySQL SQL Example

-- Filter a logs or sessions table in MySQL to find rows where ip_address column contains valid IPv4 addresses
SELECT *
FROM your_table
WHERE your_column REGEXP '^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$';

How This Works

Filter a logs or sessions table in MySQL to find rows where ip_address column contains valid IPv4 addresses. The regex pattern is used with MySQL's REGEXP operator to filter rows at the database level.

Using regex directly in SQL is efficient for use cases like data validation — it avoids loading data into application memory just to filter it with a regex.

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