Regular Expressions 101

Pro

^start of line

Negative Lookahead(?!91)

91the literal text 91

Group 1(\d{10})

\d{10}a digit, repeated exactly 10 times

$end of line

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.

25 tokens

^(?!91)(\d{10})$

9955290232
8752837492
9342832245
919485928837
917482482938
98273642733

9955290232
8752837492
9342832245
919485928837
917482482938
98273642733