“Adjoining the territory of Dan,
From the east side
To the west side,
Was one portion.”
Although it is not mentioned, the Mediterranean Sea might have been Asher’s western border. Here it seems to be on both sides of Dan. Asher in Joshua, chapter 19, was west of Naphtali and Zebulun, but here it is mentioned before them. The Israelites never had control of the seacoast towns anyway.