Regular Expressions 101

1st Alternative[+]\d{12}

Character Class[+]

+the literal + (43₁₀ / 53₈ / 2B₁₆)

\d{12}a digit, repeated exactly 12 times

2nd Alternative\b(\d{11}|(\d{3}[ ])?\d{4}[- ]?\d{4})\b

\ban ASCII word boundary

Group 1(\d{11}|(\d{3}[ ])?\d{4}[- ]?\d{4})

1st Alternative\d{11}

\d{11}a digit, repeated exactly 11 times

2nd Alternative(\d{3}[ ])?\d{4}[- ]?\d{4}

Group 2(\d{3}[ ])?

?repeats the group contents below at most once:

\d{3}a digit, repeated exactly 3 times

Character Class[ ]

the literal (32₁₀ / 40₈ / 20₁₆)

\d{4}a digit, repeated exactly 4 times

Character Class[- ]?

?matches at most one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

\d{4}a digit, repeated exactly 4 times

\ban ASCII word boundary

Global pattern flags

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

[+]\d{12}|\b(\d{11}|(\d{3}[ ])?\d{4}[- ]?\d{4})\b

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97845448
9784-5448
04197845448
+554197845448
041 9784 5448