Why is this virtualearth REST Url failing?

See more:

C#

REST

bing-maps

Based on code on p. 255 of Wrox's Pro Windows 8 Programming[http://p2p.wrox.com/book-professional-windows-8-programming-application-development-c-xaml-703/], I am trying to call virtualearth's REST API like so:

async internal static Task<CivicAddress> GetCivicAddress(Location location)
{
    HttpClient http = new HttpClient();
    StringBuilder sb = new StringBuilder("http://deb/virtualearth.net/REST/v1/Locations/");
    sb.Append(location.Latitude.ToString());
    sb.Append(",");
    sb.Append(location.Longitude.ToString());
    sb.Append("?o=xml&key=");
    sb.Append(App.BingMapsKey);

    HttpResponseMessage resp = await http.GetAsync(sb.ToString());
    resp.EnsureSuccessStatusCode();
    Stream strom = await resp.Content.ReadAsStreamAsync();

    XDocument xdoc = XDocument.Load(strom);

    XNamespace bmn = App.BingMapsNamespace;
    String addressLine = (from l in xdoc.Descendants(bmn + "AddressLine") select l).First().Value;
    String municipality = (from l in xdoc.Descendants(bmn + "Locality") select l).First().Value;
	. . .

...which (sb.ToString()) ends up being (if the latitude is 44 and the longitude is -122):

http://dev/virtualearth.net/REST/v1/Locations/44,-122?o=xml&key=[my bing maps key]

However, the code is bombing out, and never getting past the "*HttpResponseMessage resp = await http.GetAsync(sb.ToString());*" line.

I wondered if the URL was bogus, and checked the book's site for errate, but found nothing. I entered the URL directly into a browser. It tells me, **ERR_NAME_NOT_RESOLVED**

I added a catch block to the code:

catch (HttpRequestException hre)
{
    Debug.WriteLine("Exception in GetCivicAddress(): {0} Inner Ex = {1}, Stack Trace = {2}",
        hre.Message, hre.InnerException.ToString(), hre.StackTrace);
}

...and get, "Exception in GetCivicAddress(): An error occurred while sending the request.
Inner Ex = System.Net.WebException: The remote name could not be resolved: 'dev'
at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
at System.Net.Http.HttpClientHandler.GetResponseCallback(IAsyncResult ar),
Stack Trace = at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at Photrax.PhotraxUtils.<getcivicaddress>d__f.MoveNext()
A first chance exception of type 'System.NullReferenceException' occurred in Photrax.exe

Has virtualearth been hit by a mass injection of Corona, or what is going on here?