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4. Regex to validate IPv4 addresses. Regex to validate IPv4 addresses.

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   # Regex: Validate IPv4 Addresses

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     Regular expressions, or regex, are a series of special characters that define a search pattern. Unlike direct matches, regular expressions can be used to create more encompassing and dynamic string searches. They are useful for manipulating strings that may require flexible formatting or special text rules.

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     For example, an Internet Protocol Version 4, or IPv4, address consists of a network address and a host address expressed as four numbers separated by dots ranging from 0-255. These addresses cannot be hardcoded because each one is unique for identification purposes. This post will analyze a regex responsible for validating IPv4 addresses.

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