Upstream Adjacent AS list AS2828 XO-AS15 - XO Communications AS3356 LEVEL3 Level 3 Communications AS25973 PACKETEXCHANGE PacketExchange Global-AS AS3549 GBLX Global Crossing Ltd. AS4436 AS-NLAYER - nLayer Communications, Inc. AS13354 ASN-EBLGLOBAL - EBL Global Networks, Inc. AS6461 MFNX MFN - Metromedia Fiber Network Downstream Adjacent AS list AS13583 ACCESS-TECH - Access Technology, Inc.