Kitto's Popular Cyclopedia of Biblial Literature
Ach´shaph, a royal city of the Canaanites (Joshua 11:1), has been supposed by many to be the same as Achzib, both being in the tribe of Asher. But a careful consideration of Joshua 19:25; Joshua 19:29, will make it probable that the places were different. There is more reason in the conjecture that Achshaph was another name for Accho or Acre, seeing that Accho otherwise does not occur in the list of towns in the lot of Asher, although it is certain, from Judges 1:31, that Accho was in the portion of that tribe.
Kitto, John, ed. Entry for 'Achshaph'. "Kitto's Popular Cyclopedia of Biblial Literature". https://www.studylight.org/encyclopedias/eng/kbe/a/achshaph.html.