.Net Tracking Shipments

I have a situtation where a user will enter in a tracking number and i need to be able to figure out which company it was shipped from (UPS, FedEX, USPS, DHL) and then pass back a 开发者_开发问答url that they can click on and send them to the right website. Any suggestions?

Thanks Erik

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Use Google:

Make a call to Google like http://www.google.com/?q=[trackingNumber] and parse the response. You may even find a JSON/XML API for this.