regex101: Python Match Workspace

\ba Unicode word boundary

Group 1((?:25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d)\.(?:25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d)\.(?:25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d)\.(?:25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d))

Non-Capturing Group(?:25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d)

1st Alternative25[0-5]

25the literal text 25

Character Class[0-5]

0-5one character from 0 (48₁₀) to 5 (53₁₀)

2nd Alternative2[0-4]\d

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[0-4]

0-4one character from 0 (48₁₀) to 4 (52₁₀)

\da Unicode decimal digit

3rd Alternative1\d\d

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

\da Unicode decimal digit

4th Alternative[1-9]\d

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

\da Unicode decimal digit

5th Alternative\d

\da Unicode decimal digit

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d)

1st Alternative25[0-5]

25the literal text 25

Character Class[0-5]

0-5one character from 0 (48₁₀) to 5 (53₁₀)

2nd Alternative2[0-4]\d

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[0-4]

0-4one character from 0 (48₁₀) to 4 (52₁₀)

\da Unicode decimal digit

3rd Alternative1\d\d

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

\da Unicode decimal digit

4th Alternative[1-9]\d

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

\da Unicode decimal digit

5th Alternative\d

\da Unicode decimal digit

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d)

1st Alternative25[0-5]

25the literal text 25

Character Class[0-5]

0-5one character from 0 (48₁₀) to 5 (53₁₀)

2nd Alternative2[0-4]\d

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[0-4]

0-4one character from 0 (48₁₀) to 4 (52₁₀)

\da Unicode decimal digit

3rd Alternative1\d\d

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

\da Unicode decimal digit

4th Alternative[1-9]\d

5th Alternative\d

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d)

\ba Unicode word boundary

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

25 tokens

Regular Expression

\b((?:25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d)\.(?:25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d)\.(?:25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d)\.(?:25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d))\b

New

127.0.0.1 12.12.12 3.1.2.5 23.52.121.25 23.12.155.255 255.255.255.256 255.255.255.255 01.12.14.54 1.12.14.54

Extraction

127.0.0.1 12.12.12 3.1.2.5 23.52.121.25 23.12.155.255 255.255.255.256 255.255.255.255 01.12.14.54 1.12.14.54