Exception in DotNetShipping .Net 4.6 about shippingrates HOT 3 OPEN

Sorry, to be clear, the exception occurs on the GetRates call:

            // Setup package and destination/origin addresses
            var packages = new List<Package>();
            // Package(length, width, height, weight, insured value)
            packages.Add(new Package(8, 8, 6, weight, 100));

            string shipToCountry = GetCountry(shipZip.Replace(" ", string.Empty));

            var origin = new Address("", "", originZip, "US");
            var destination = new Address("", "", shipZip, shipToCountry);

            // Create RateManager
            var rateManager = new RateManager();
            rateManager.AddProvider(new UPSProvider(upsLicenseNumber, upsUserId, upsPassword));

            // Call GetRates()
            var shipment = rateManager.GetRates(origin, destination, packages);

from shippingrates.

Does it work if you open the production or development URL in your browser on the development machine?
https://wwwcie.ups.com/ups.app/xml/Rate for dev
https://onlinetools.ups.com/ups.app/xml/Rate for production

from shippingrates.

When you say, "Does it work...". I entered those URL's into Firefox on my dev system and got back a response for each (see attached file). My code is just calling the library's GetRates(origin, dest, packages) method. Nothing has changed there, but it has been a long time since I've worked on this app and for whatever reason I'm seeing the timeout. I plan to publish the code to my Azure staging server and confirm things are still working in that environment, but I'd love to be able to debug locally...

Thanks for the help! I really appreciate it.
UPS URL Responses.txt

from shippingrates.