This is the 4420th most frequent Japanese word.
圏内
"圏内" means "within the range" or "inside the sphere/zone."
Here, '圏内' (within the sphere/range) is used to demonstrate spatial and contextual proximity to activities.
この施設は私たちの活動圏内にあるためよく利用しています。
We frequently use this facility as it is within the range of our activities.
In this sentence, '圏内' (within the scope/boundary) indicates inclusion within a geographically or conceptually assigned area.
対象地域圏内の学校がこのプロジェクトに参加しています。
Schools within the target region are participating in this project.
Here, '圏内' (within the range/boundary) shows coverage or operational range, applied to signal reach or availability.