AS1218

UPSTREAMS3

ASN	DESCRIPTION	IPv4	IPv6	OBSERVATIONS
AS1299	Arelion Sweden AB	✓	✗	59
AS8220	COLT Technology Services Group Limited	✓	✓	51
AS3356	Level 3 Parent, LLC	✗	✓	20

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 days ago.