From Longman Dictionary of Contemporary Englishout of boundsout of boundsFORBIDif a place is out of bounds, you are not allowed to go there SYN off-limits American Englishout of bounds to/for The path by the railway line is officially out of bounds to both cyclists and walkers. → bound
Examples from the Corpus
bound to/for• By midnight on the seventh, downtown Los Angeles had been declared out of bounds for military personnel. 