Buenos Aires · Argentina

Most of the interconnection recorded here sits in colocation rather than on the exchange fabric. The three exchanges hold 20, 15 and 10 participants, while 21 facilities account for 346 network presences. Cabase BUE lists 159 networks on its own and Cirion Buenos Aires - BUE1 another 74, with Pacheco Datacenter EZE1 at 42 and Datacenter SYT at 19. Among Argentina's mobile operators, only Personal (AS7303) appears on an exchange in the city, at PIT AR. PeeringDB lists no Claro or Movistar ASN at any of the three.

An address that a database places in Buenos Aires can sit on hardware elsewhere in Argentina. Operators receive address blocks and publish one location in the registry record, and geolocation providers copy that published location across the whole block. Mobile networks widen the gap further, because Claro, Movistar and Personal move subscriber sessions through a small number of national gateways. A phone connected in Mendoza or Rosario can leave the network on an address whose registry entry says Buenos Aires, and every database that reads the entry will say the same.

The origin ASN and the netname on the specific prefix tell you more than the city label does. A prefix originating from AS11664, AS11315, AS22185, AS262175 or AS7303 belongs to an Argentine mobile network, and its city field describes where the operator registered the block. A prefix whose netname points at a network present in Cabase BUE or Cirion Buenos Aires - BUE1 is describing equipment racked in a Buenos Aires facility, which is a different claim entirely.