AS54201

UPSTREAMS17

ASN	DESCRIPTION	IPv4	IPv6	OBSERVATIONS
AS9318	SK Broadband Co Ltd	✓	✗	24
AS8220	COLT Technology Services Group Limited	✓	✓	18
AS3356	Level 3 Parent, LLC	✓	✓	17
AS701	Verizon Business	✗	✓	8
AS3786	LG DACOM Corporation	✓	✗	4
AS6461	Zayo Bandwidth	✗	✓	4
AS33491	Comcast Cable Communications, LLC	✗	✓	4
AS174	Cogent Communications, LLC	✓	✗	2
AS3257	GTT Communications Inc.	✗	✓	2
AS4826	Vocus Connect International Backbone	✗	✓	2
AS11427	Charter Communications Inc	✗	✓	2
AS20001	Charter Communications Inc	✗	✓	2
AS22909	Comcast Cable Communications, LLC	✗	✓	2
AS33657	Comcast Cable Communications, LLC	✗	✓	2
AS33667	Comcast Cable Communications, LLC	✗	✓	2
AS46887	Crown Castle Fiber LLC	✗	✓	2
AS3491	PCCW Global (HK) Ltd.	✓	✗	1

The figures come from the routing tables our peers give us. This number is seen from 6 separate vantage points. A peer that shares an internet exchange with this network and carries only a small share of its paths is not counted as an upstream: a transit provider carries the whole table, an IX peer only its own announcements. Internet exchange data comes from PeeringDB. Figures are from a dump taken 5 hours ago.