199.186.0.0 - 199.186.255.0 AT&T InterSpan Data Communications Services (NETBLK-TBLK-ATTICO-BLK1) 199.186.25.0 - 199.186.34.255 CTC Mundo (NETBLK-CTC-MUNDO-DOM1) 199.186.136.0 Wilson Hein Network (NET-WHEIN-NET) 199.186.169.0 Afro American Newspaper (NET-AFRO-NEWSPAPER) 199.186.194.0 - 199.186.194.255 C.H. Heist Corporation (NETBLK-HEIST-194)