regex101: PCRE (Legacy) Match Workspace

^start of line

Non-Capturing Group(?:(?:(?:[A-F0-9]{1,4}:){6}|(?=(?:[A-F0-9]{0,4}:){0,6}(?:[0-9]{1,3}\.){3}[0-9]{1,3}$)(([0-9A-F]{1,4}:){0,5}|:)((:[0-9A-F]{1,4}){1,5}:|:)|::(?:[A-F0-9]{1,4}:){5})(?:(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])\.){3}(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])|(?:[A-F0-9]{1,4}:){7}[A-F0-9]{1,4}|(?=(?:[A-F0-9]{0,4}:){0,7}[A-F0-9]{0,4}$)(([0-9A-F]{1,4}:){1,7}|:)((:[0-9A-F]{1,4}){1,7}|:)|(?:[A-F0-9]{1,4}:){7}:|:(:[A-F0-9]{1,4}){7})

1st Alternative(?:(?:[A-F0-9]{1,4}:){6}|(?=(?:[A-F0-9]{0,4}:){0,6}(?:[0-9]{1,3}\.){3}[0-9]{1,3}$)(([0-9A-F]{1,4}:){0,5}|:)((:[0-9A-F]{1,4}){1,5}:|:)|::(?:[A-F0-9]{1,4}:){5})(?:(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])\.){3}(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])

Non-Capturing Group(?:(?:[A-F0-9]{1,4}:){6}|(?=(?:[A-F0-9]{0,4}:){0,6}(?:[0-9]{1,3}\.){3}[0-9]{1,3}$)(([0-9A-F]{1,4}:){0,5}|:)((:[0-9A-F]{1,4}){1,5}:|:)|::(?:[A-F0-9]{1,4}:){5})

1st Alternative(?:[A-F0-9]{1,4}:){6}

Non-Capturing Group(?:[A-F0-9]{1,4}:){6}

{6}repeats the group contents below exactly 6 times:

Character Class[A-F0-9]{1,4}

{1,4}matches between 1 and 4 characters from the set below:

A-Fone character from A (65₁₀) to F (70₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

2nd Alternative(?=(?:[A-F0-9]{0,4}:){0,6}(?:[0-9]{1,3}\.){3}[0-9]{1,3}$)(([0-9A-F]{1,4}:){0,5}|:)((:[0-9A-F]{1,4}){1,5}:|:)

Positive Lookahead(?=(?:[A-F0-9]{0,4}:){0,6}(?:[0-9]{1,3}\.){3}[0-9]{1,3}$)

Non-Capturing Group(?:[A-F0-9]{0,4}:){0,6}

{0,6}repeats the group contents below between 0 and 6 times:

Character Class[A-F0-9]{0,4}

{0,4}matches between 0 and 4 characters from the set below:

A-Fone character from A (65₁₀) to F (70₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Non-Capturing Group(?:[0-9]{1,3}\.){3}

{3}repeats the group contents below exactly 3 times:

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

$end of line

Group 1(([0-9A-F]{1,4}:){0,5}|:)

1st Alternative([0-9A-F]{1,4}:){0,5}

Group 2([0-9A-F]{1,4}:){0,5}

{0,5}repeats the group contents below between 0 and 5 times:

Character Class[0-9A-F]{1,4}

{1,4}matches between 1 and 4 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

A-Fone character from A (65₁₀) to F (70₁₀) (case sensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

2nd Alternative:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group 3((:[0-9A-F]{1,4}){1,5}:|:)

1st Alternative(:[0-9A-F]{1,4}){1,5}:

Group 4(:[0-9A-F]{1,4}){1,5}

{1,5}repeats the group contents below between 1 and 5 times:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Character Class[0-9A-F]{1,4}

{1,4}matches between 1 and 4 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

A-Fone character from A (65₁₀) to F (70₁₀) (case sensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

2nd Alternative:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

3rd Alternative::(?:[A-F0-9]{1,4}:){5}

::the literal text ::

Non-Capturing Group(?:[A-F0-9]{1,4}:){5}

{5}repeats the group contents below exactly 5 times:

Character Class[A-F0-9]{1,4}

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Non-Capturing Group(?:(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])\.){3}

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

2nd Alternative(?:[A-F0-9]{1,4}:){7}[A-F0-9]{1,4}

3rd Alternative(?=(?:[A-F0-9]{0,4}:){0,7}[A-F0-9]{0,4}$)(([0-9A-F]{1,4}:){1,7}|:)((:[0-9A-F]{1,4}){1,7}|:)

4th Alternative(?:[A-F0-9]{1,4}:){7}:

5th Alternative:(:[A-F0-9]{1,4}){7}

$end of line

Global pattern flags

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

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Search reference

Regular Expression

^(?:(?:(?:[A-F0-9]{1,4}:){6}|(?=(?:[A-F0-9]{0,4}:){0,6}(?:[0-9]{1,3}\.){3}[0-9]{1,3}$)(([0-9A-F]{1,4}:){0,5}|:)((:[0-9A-F]{1,4}){1,5}:|:)|::(?:[A-F0-9]{1,4}:){5})(?:(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])\.){3}(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])|(?:[A-F0-9]{1,4}:){7}[A-F0-9]{1,4}|(?=(?:[A-F0-9]{0,4}:){0,7}[A-F0-9]{0,4}$)(([0-9A-F]{1,4}:){1,7}|:)((:[0-9A-F]{1,4}){1,7}|:)|(?:[A-F0-9]{1,4}:){7}:|:(:[A-F0-9]{1,4}){7})$

New

1762:0:0:0:0:B03:1:AF18
1762:0:0:0:0:B03:127.32.67.15
1762::B03:1:AF18
1762::B03::1:AF18
1762::B03:127.32.67.15
1762::B03::127.32.67.15