Android :: Lookup Contact Name Of Existing Phone Number

I'm using a Android Wildfire and I used the following code to lookup the contact name of an existing phone number.

private String getContactNameFromNumber(String number) { String[] projection = new String[] { Contacts.Phones.DISPLAY_NAME, Contacts.Phones.NUMBER };
Uri contactUri = Uri.withAppendedPath(Contacts.Phones.CONTENT_FILTER_URL, Uri.encode(number));
Log.d(TAG, contactUri.toString());
// query time
Cursor c = context.getContentResolver().query(contactUri, projection, null, null, null);
// if the query returns 1 or more results
// return the first result
if (c.moveToFirst()) {
String name = c.getString(c.getColumnIndex(Contacts.Phones.DISPLAY_NAME));
Log.d(TAG, name);
return name;
}

// return null if no match was found return null;
}

I am unable to resolve the contact name. The logcat output shows the following
11-14 13:45:35.879: DEBUG/Test(3342): content://contacts/phones/filter/%2B919773653345