199.27.0.0 - 199.27.5.0 Lear Astronics Corp. (NETBLK-TBLK-LEARASTRONICS) 199.27.8.0 - 199.27.15.0 Oklahoma Department of Transportation (NETBLK-TBLK-OKLADOT) 199.27.16.0 - 199.27.29.0 The NPD Group (NETBLK-TBLK-NPDGROUP) 199.27.32.0 - 199.27.63.0 Bowater Communications Papers Inc. (NETBLK-TBLK-BCPI)