Regular Expressions 101

^start of line

Non-Capturing Group(?:\d{2})?

?repeats the group contents below at most once:

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

Non-Capturing Group(?:[6-9]\d{7}|9\d{8})

1st Alternative[6-9]\d{7}

Character Class[6-9]

6-9one character from 6 (54₁₀) to 9 (57₁₀)

\d{7}a digit, repeated exactly 7 times

2nd Alternative9\d{8}

9the literal 9 (57₁₀ / 71₈ / 39₁₆)

\d{8}a digit, repeated exactly 8 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.

Search reference

Regular Expression

^(?:\d{2})?(?:[6-9]\d{7}|9\d{8})$

Test String
New

4133333321
85430897
90761345
1990461345
5544444444
24505678
41987456876
97644356
99991111
58753201
67890431
999999999
78906542
83567031
5568795527
4559853212
45678901
23456790
5140041000
5535489574
7899504526

Regular Expression

Test StringNew

Test String
New