123-456-7890 is not a valid US/Canadian telephone number. 2-654-06547 is not a valid US/Canadian telephone number. sf34-asdf- is not a valid US/Canadian telephone number. abc-def-ghij is not a valid US/Canadian telephone number. 555_555_5555 is not a valid US/Canadian telephone number. 000-000-0000 is not a valid US/Canadian telephone number. 8007396325 is not a valid US/Canadian telephone number. 241-555-2091 is a valid US/Canadian telephone number. 900-976-739 is not a valid US/Canadian telephone number. 5352-342=452 is not a valid US/Canadian telephone number. 200-200-2000 is a valid US/Canadian telephone number. 8000-555-0129 is not a valid US/Canadian telephone number. 800-5555-0129 is not a valid US/Canadian telephone number. 800-555-123456 is not a valid US/Canadian telephone number.