title: How to Get FedEx & UPS Zone numbers if I know the from and to Zip Codes?
body: <p>Other than studying and working with their full APIs...</p>
  
  <p>Is there an easy way to get the shipping zone number from FedEx and UPS if I know the "from" and "to" zip codes? </p>
  
  <p>For example, is there a simple web service that I can use? </p>