Regular Expressions 101

Explanation

Pro

^start of line

Group srcNet(?<srcNet>\d{1,3}\.\d{1,3}\.\d{1,3}|[0-9a-f]{1,4}:[0-9a-f]{1,4}:[0-9a-f]{1,4}:[0-9a-f]{1,4})

1st Alternative\d{1,3}\.\d{1,3}\.\d{1,3}

\d{1,3}a digit, repeated between 1 and 3 times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{1,3}a digit, repeated between 1 and 3 times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{1,3}a digit, repeated between 1 and 3 times

2nd Alternative[0-9a-f]{1,4}:[0-9a-f]{1,4}:[0-9a-f]{1,4}:[0-9a-f]{1,4}

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 (97₁₀) to f (102₁₀) (case insensitive)

: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 (97₁₀) to f (102₁₀) (case insensitive)

: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 (97₁₀) to f (102₁₀) (case insensitive)

: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 (97₁₀) to f (102₁₀) (case insensitive)

Character Class[.:]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Global pattern flags

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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

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

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

^(?<srcNet>\d{1,3}\.\d{1,3}\.\d{1,3}|[0-9a-f]{1,4}:[0-9a-f]{1,4}:[0-9a-f]{1,4}:[0-9a-f]{1,4})[.:]

New

218.65.30.30
218.65.30.107
58.218.198.172
2001:468:1900::34
2001:468:4043:6343:1011:6604:3200:2883
::1
2001:0468:1900:1010:4030:3898:3021:aabC
103.3022.349.349
.1

Extraction

218.65.30.30
218.65.30.107
58.218.198.172
2001:468:1900::34
2001:468:4043:6343:1011:6604:3200:2883
::1
2001:0468:1900:1010:4030:3898:3021:aabC
103.3022.349.349
.1