\s*any whitespace character, repeated any number of times
\(?optionally matches the literal ( (4010 / 508 / 2816)
0the literal 0 (4810 / 608 / 3016)
\+the literal + (4310 / 538 / 2B16)
\s*any whitespace character, repeated any number of times
-the literal - (4510 / 558 / 2D16)
\d{4}a digit, repeated exactly 4 times
\)?optionally matches the literal ) (4110 / 518 / 2916)
\s*any whitespace character, repeated any number of times
-the literal - (4510 / 558 / 2D16)
\d{3}a digit, repeated exactly 3 times
\s*any whitespace character, repeated any number of times
-the literal - (4510 / 558 / 2D16)
\d{3}a digit, repeated exactly 3 times
\s*any whitespace character, repeated any number of times