Regular Expressions 101

1st Alternative^[0-7]\.

^start of line

Character Class[0-7]

0-7one character from 0 (48₁₀) to 7 (55₁₀)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

2nd Alternative^8.([0-3][0-9]|4[0-3]|44.0.([0-3][0-9]))

^start of line

8the literal 8 (56₁₀ / 70₈ / 38₁₆)

.any character (except for line terminators)

Group 1([0-3][0-9]|4[0-3]|44.0.([0-3][0-9]))

1st Alternative[0-3][0-9]

Character Class[0-3]

0-3one character from 0 (48₁₀) to 3 (51₁₀)

Character Class[0-9]

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

2nd Alternative4[0-3]

4the literal 4 (52₁₀ / 64₈ / 34₁₆)

Character Class[0-3]

0-3one character from 0 (48₁₀) to 3 (51₁₀)

3rd Alternative44.0.([0-3][0-9])

44the literal text 44

.any character (except for line terminators)

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

.any character (except for line terminators)

Group 2([0-3][0-9])

Character Class[0-3]

0-3one character from 0 (48₁₀) to 3 (51₁₀)

Character Class[0-9]

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

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^[0-7]\.|^8.([0-3][0-9]|4[0-3]|44.0.([0-3][0-9]))

New

8.44.0.39
8.43.0.56
8.44.0.55