The very first PRISM slides from the beginning of June detail a collection program where the data is collected from service providers, and they actually go and name the service providers they have access to.
从六月初 第一个PRISM的幻灯片开始 它详细描述了 一个从服务提供商收集数据的项目 而且他们还对那些被使用的 服务商进行了命名