Upstream Adjacent AS list AS7385 INTEGRATELECOM - Integra Telecom, Inc., US AS174 COGENT-174 - Cogent Communications, US AS3257 GTT-BACKBONE GTT, DE AS3356 LEVEL3 - Level 3 Communications, Inc., US AS3549 LVLT-3549 - Level 3 Communications, Inc., US AS6453 AS6453 - TATA COMMUNICATIONS (AMERICA) INC, US AS209 CENTURYLINK-US-LEGACY-QWEST - Qwest Communications Company, LLC, US