\(?optionally matches the literal ( (4010 / 508 / 2816)
\d{2}a digit, repeated exactly 2 times
\)?optionally matches the literal ) (4110 / 518 / 2916)
\s?optionally matches any whitespace character
\d{5}a digit, repeated exactly 5 times
\-?optionally matches the literal - (4510 / 558 / 2D16)
\d{4}a digit, repeated exactly 4 times
g modifier: global. Finds all matches instead of stopping after the first