Regular Expressions 101

Library entries

IP4 Address Checker

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1

Regular Expression
python

"
(?:\b|^)((?:(?:(?:\d)|(?:\d{2})|(?:1\d{2})|(?:2[0-4]\d)|(?:25[0-5]))\.){3}(?:(?:(?:\d)|(?:\d{2})|(?:1\d{2})|(?:2[0-4]\d)|(?:25[0-5]))))(?:\b|$)
"
g

Description

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Submitted by Steve (Gadget) Barnes - 5 years ago