AS270200

UPSTREAMS2

ASN	DESCRIPTION	IPv4	IPv6	OBSERVATIONS
AS23520	Columbus Networks USA, Inc.	✓	✓	28
AS11172	Alestra, S. de R.L. de C.V.	✗	✓	12

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 4 hours ago.