Level 3 was also the largest competitive local exchange carrier (CLEC) and the 3rd largest provider of fiber-optic internet access (based on coverage) in the United States.
Level 3 同时也是美国市场上最大的竞争性本地交换运营商（英文：Competitive Local Exchange Carrier）以及第三大的光纤网络提供商（基于覆盖地区而言）。