Given a Calling Card number it will return any associated Fastway label numbers
cclNumber - The Calling number to query
{ 'result': { 'cclnumber': 'CCL0000000857', 'labelnumbers': [ 'VW0000046929' ] }, 'generated_in': '107ms' }
https://ie.api.fastway.org/v1/tracktrace/ccllookup/CCL0000000857?api_key=YOUR_API_KEY