Upstream Adjacent AS list AS3356 LEVEL3 - Level 3 Communications, Inc., US AS6461 ZAYO-6461 - Zayo Bandwidth, US AS2828 XO-AS15 - MCI Communications Services, Inc. d/b/a Verizon Business, US AS2914 NTT-COMMUNICATIONS-2914 - NTT America, Inc., US AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc., US