Columbus Networks USA, Inc. COLUMBUS-NETWORKS-3 (NET-72-252-0-0-1) 72.252.0.0 - 72.252.255.255 Union Fenosa Redes de Telecomunicacion Guatemala S.A. CN-72-252-0-0 (NET-72-252-0-0-2) 72.252.0.0 - 72.252.3.255