These AS numbers names were collected from 346 days of continuous recording of Windows 10 telemetry traffic. Virtual machine and traffic recording software was configured as explained here. Raw traffic dumps were processed as explained here.

First list of AS numbers has 38 entries, sorted in descending order by total outgoing traffic transmitted by Windows 10. Second list of AS numbers has 54 entries, sorted in descending order by total incoming traffic received by Windows 10. We did not include autonomous systems which had less than 128 Kb of transmitted/received data. Windows 10 had default settings and had no any third party software installed.

Outgoing Windows 10 traffic (breakdown by AS)

Incoming Windows 10 traffic (breakdown by AS)