CODE EXAMPLE FOR JAVASCRIPT

js phone number validation

^(?!.*911.*d{4})((+?1[/ ]?)?(?![(. -]?555.*)( ?[2-9][0-9]{2} ?) ?|(+?1[./ -])?[2-9][0-9]{2}[./ -]?)(?!555.?01..)([2-9][0-9]{2})[./ -]?([0-9]{4})$