within range; within the limits
Typically used in the pattern ～の範囲内 to indicate something is inside a specified scope, limit, or range.
This price is within the budget.
The investigation was conducted within the limits of the law.
範囲内 is a more general word for 'within a scope or limit', while 圏内 specifically evokes a radius, zone, or sphere of influence.
out of range; outside the scope
Compound of 範囲 (range, scope) + 内 (inside, within).