Regular Expressions 101

Explanation
Pro

\ban ASCII word boundary

Negated Character Class[^2\n]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

\na line-feed (newline) character (ASCII 10)

\d{6,12}a digit, repeated between 6 and 12 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.

25 tokens

\b[^2\n]\d{6,12}\b