The Lost Tribe of Asher is modern Austria and all other affiliated countries.
Moses' prophecy about Asher:
5 Deuteronomy 33:24
24¶And of Asher he said, Let Asher be blessed with children; let him be acceptable to his brethren, and let him dip his foot in oil.
The key prophecy that identifies Asher is the oil.
For anyone wishing to purchase a supertanker of oil, the place to go is OPEC, located in Vienna, the capital of Austria.
Note there are attempts to drill for oil in the historical locations of Asher in modern Israel. That drilling is based on the same passage in scripture as quoted here. So far nothing in Israel compares to all of the oil known to the OPEC member nations, which is located in modern Asher.