Regular Expressions 101

\ban ASCII word boundary

Non-Capturing Group(?:\d{2}[-.\s]?){5}

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

\d{2}a digit, repeated exactly 2 times

Character Class[-.\s]?

?matches at most one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\sany whitespace character

\ban ASCII word boundary

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

\b(?:\d{2}[-.\s]?){5}\b

New

0231000000
02 31 00 00 00
02.31.00.00.00
02-31-00-00-00
0231123456789
02:31:00:00:00