Regular Expressions 101

Community Patterns

Community Library Entry

1

Regular Expression
PCRE2 (PHP >=7.3)

/
^((10|127)(\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?))|169\.254|192\.168|172\.(2[0-9]|1[6-9]|3[0-1]))(\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){2}$
/
gm

Description

Match only Private IPv4

Does not match Public IPv4 and test Nets

Submitted by NozZy - 7 months ago (Last modified 7 months ago)