Translations
This then was the lot of the tribe of the children of Judah by their families; even to the border of Edom the wilderness of Zin southward was the uttermost part of the south coast.
The lot for the tribe of the sons of Yehudah, according to their clans, reached to the border of Edom — to the Wilderness of Tzin in the far south.
The allotted territory for the tribe of Judah, clan by clan, extended to the border of Edom — to the Wilderness of Zin at the farthest south.
Now the allotment for the clans of the tribe of Judah extended to the border of Edom, to the Wilderness of Zin at the extreme southern boundary:

