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IP Address Regex Generator and Validator

Generate Regex and Validate IP Address using regular expression

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IP Address Regex Generator and Validator

Enter your regular expression and use validator below to verify different ip address inputs

IP Regex Pattern

   
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Valid IP Address Checker

You can enter different ip address to validate for above generated Regular expression. You can also copy other ip address regex patterns and use as validator

Validate IP Address
      
ipv4 :   194.10.22.146ipv6 :    2001:0000:3238:DFE1:0063:0000:0000:FEFB

An overview of IP address regular expression generators and validators

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IP Address Regular Expressions

Regular expressions, also known as regex, are powerful tools for pattern matching and data validation. In the context of IP addresses, regular expressions can be used to validate whether a given string represents a valid IPv4 or IPv6 address.

IPv4 Regular Expression

The most common regular expression for validating IPv4 addresses is:
(?:^|\s)([a-z]{3,6}(?=://))?(://)?((?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.
(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.
(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.
(?:25[0-5]|2[0-4]\d|[01]?\d\d?))
(?::(\d{2,5}))?(?:\s|$)
This regex breaks down into the following components:
  • ^: Matches the beginning of the string
  • (?:25[0-5]|2[0-4]\d|[01]?\d\d?) Matches the octets
  • \.: Matches a literal period
  • $: Matches the end of the string
Example of a valid IPv4 address - 194.10.22.146

IPv6 Regular Expression

Validating IPv6 addresses requires a more complex regular expression due to their hexadecimal representation and colons. A common IPv6 regex is:
(?<[!:.\w])(?:[A-Fa-z0-9]{1,4}:){7}[A-Fa-z0-9]{1,4}(?![:.\w])
Example of a valid IPV6 address - 2001:0000:3238:DFE1:0063:0000:0000:FEFB

Advantages of Using Regular Expressions for IP Address Validation

Regular expressions offer several advantages for IP address validation:
  • Accuracy: Regex can precisely identify valid IP addresses based on strict formatting rules.
  • Flexibility: Regex can handle various IP address formats, including IPv4, IPv6, and CIDR ranges.
  • Efficiency: Regex can validate IP addresses quickly and efficiently, making them suitable for large datasets.
Integration with Programming Languages
Regular expressions can be integrated into various programming languages, enabling developers to validate IP addresses within their applications.

IP Address Regular Expression Reference Table

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Input

Expression

Valid IP Address Example

Valid IPv4 Address

(?:^|\s)([a-z]{3,6}(?=://))?(://)?((?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.(?:25[0-5]|2[0-4]\d|[01]?\d\d?))(?::(\d{2,5}))?(?:\s|$)

194.10.22.146

Valid IPV6 Address

(?<![:.\w])(?:[A-Fa-z0-9]{1,4}:){7}[A-Fa-z0-9]{1,4}(?![:.\w])

2001:0000:3238:DFE1:0063:0000:0000:FEFB

Valid IPv4 and IPv6

(^(((([1]?\d)?\d|2[0-4]\d|25[0-5])\.){3}(([1]?\d)?\d|2[0-4]\d|25[0-5]))|([\da-fA-F]{1,4}(\:[\da-fA-F]{1,4}){7})|(([\da-fA-F]{1,4}:){0,5}::([\da-fA-F]{1,4}:){0,5}[\da-fA-F]{1,4})$)

a760:ab34:c468:9672:999d:1564:1d69:b226, 181.34.55.149

Frequently Asked Questions on IP Address Regex Generator

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  • Regex stands for Regular Expression and it's a pattern of characters in a specific format that can act as a rule and can be used to check adherence or match of an input text to the rules. A ip address regex is a pattern for matching ip address. The validator matches this input with any ip address of ipv4 or ipv6 (ip validation)

  • This regex pattern finds the match for ipv4 with optional match of protocol and port. regex ipv4 - (?:^|\s)([a-z]{3,6}(?=://))?(://)?((?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.(?:25[0-5]|2[0-4]\d|[01]?\d\d?))(?::(\d{2,5}))?(?:\s|$)

  • regex ipv6 (?<![:.\w])(?:[A-Fa-z0-9]{1,4}:){7}[A-Fa-z0-9]{1,4}(?![:.\w]) . This regex pattern finds the match for ipv6.