Equipment box in the backyard

The house I moved in has an equipment box in the backyard. The cover does not sit properly because there is a black cable coming into it. The cable goes to my neighbour. Is this normal? Am I supposed to call someone?

The house I moved in has an equipment box in the backyard. The cover does not sit properly because there is a black cable coming into it. The cable goes to my neighbour. Is this normal? Am I supposed to call someone?