Regular Expressions 101

Group 1(0[0-9]{3}(\-|)[0-9]{4}(\-|)[0-9]{4}(\-|)[0-9]{4})

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Character Class[0-9]{3}

{3}matches exactly 3 characters from the set below:

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

Group 2(\-|)

1st Alternative\-

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative — matches an empty string

Character Class[0-9]{4}

{4}matches exactly 4 characters from the set below:

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

Group 3(\-|)

1st Alternative\-

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative — matches an empty string

Character Class[0-9]{4}

{4}matches exactly 4 characters from the set below:

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

Group 4(\-|)

1st Alternative\-

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative — matches an empty string

Character Class[0-9]{4}

{4}matches exactly 4 characters from the set below:

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(0[0-9]{3}(\-|)[0-9]{4}(\-|)[0-9]{4}(\-|)[0-9]{4})

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1234-5678-1234-5678
0548-1489-5845-7452