Regular Expressions 101

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Community Patterns

35

IP Address validator

ECMAScript (JavaScript)
Validates IPv4 IP Address
Submitted by krzysp - 10 years ago
15

IPv4

PCRE (PHP <7.3)
no description available
Submitted by robwa - 9 years ago
9

IPv4 Validator

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 5 years ago (Last modified 2 years ago)
1

IPv4&IPv6 URL validation regular expression

PCRE (PHP <7.3)
no description available
Submitted by Henry Li - 11 years ago
4

IPV4 address validation using recursion

PCRE (PHP <7.3)
Validate IPv4 addresses using PCRE's recursion patterns. A shorter but less efficient alternative to https://regex101.com/r/wZ6oY5/1
Submitted by Captain Haddock - 10 years ago
1

IPv4 extraction

Python
no description available
Submitted by Jacob - 11 years ago
2

Dotted Decimal IPv4 Adress (for programming languages)

PCRE (PHP <7.3)
Searches for dotted decimal IPv4 Adresses and saves the numbers in match groups.
Submitted by anonymous - 10 years ago
3

IPv4 validation

ECMAScript (JavaScript)
validate an IP v4
Submitted by harimambura - 9 years ago
2

IPv4

PCRE (PHP <7.3)
no description available
Submitted by Jorge C. - 11 years ago
3

Match a valid IPv4 or IPv6 address

PCRE (PHP <7.3)
This regular expression will match an IPv4 address as well as both compressed or uncompressed IPv6 address.
Submitted by Tom Groeneveld, SevOne.com - 9 years ago
-2

Find a IPV4

ECMAScript (JavaScript)
no description available
Submitted by Jon Dotsoy - 10 years ago
2

IPv4 Validator

Python
no description available
Submitted by dannyo - 10 years ago
-2

IPv4

Python
allows for all legal IPv4 addresses
Submitted by anonymous - 10 years ago
1

ipv4 IP addressses, capturing private ranges

PCRE (PHP <7.3)
Capture 0.0.0.0-255.255.255.255 IP address octets. Capture private ranges, such as '169.254.' and '10.'
Submitted by OnlineCop - 10 years ago
1

ipv4 and ipv6

PCRE (PHP <7.3)
no description available
Submitted by shri - 10 years ago
2

IPv4 strict

PCRE (PHP <7.3)
Valid: 000.01.249.255 1.199.200.0 0.0.0.0 Invalid:...
Submitted by MaxusR - 9 years ago
2

Find IP

PCRE (PHP <7.3)
Regex to match an IPv4 address at beginning
Submitted by edoz90 - 9 years ago
2

IP Address

PCRE (PHP <7.3)
IPv4 Address Input
Submitted by anonymous - 9 years ago
2

IPv4 dotted decimal

ECMAScript (JavaScript)
This regexp was written for Regex Tuesday Challenge - Week Six.
Submitted by anonymous - 8 years ago
2

IPv4 with an undefined amount of 0 before every number

PCRE (PHP <7.3)
This regex matches every IPv4 address with or without 0s before every number. For example: 192.168.1.1 00000000000192.168.00000000000001.01
Submitted by anonymous - 5 years ago
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