|Easton's Bible Dictionary|
Exchange, a city on the north border of Naphtali (Joshua 19:33).
Int. Standard Bible Encyclopedia
he'-lef (cheleph): A place on the southern border of Naphtali (Joshua 19:33); unidentified.
Heleph (1 Occurrence)
Joshua 19:33 Their border was from Heleph, from the oak in Zaanannim, Adaminekeb, and Jabneel, to Lakkum. It ended at the Jordan. (WEB KJV JPS ASV BBE DBY WBS YLT NAS RSV NIV)