Brussels · Belgium

BNIX is the only exchange PeeringDB lists in Brussels, and 78 networks participate in it. More of the city's recorded connectivity sits in colocation than at the exchange. Seven facilities hold 182 network presences, with Digital Realty BRU1 at 103, LCL Brussels (Diegem) at 47 and Level(3) Brussels at 21, while KevlinX Brussels and the MCI/Verizon site in Diegem have none recorded. BNIX lists three carrier ASNs, 1273, 2686 and 3303. The carrier registry names no Belgian mobile operator, so nothing in this data shows a mobile network peering in the city.

An address that geolocates to Brussels can sit on hardware anywhere in the operator's network. Operators announce address blocks from a registry record, and that record carries a single address, often a head office or a national administrative entry, for a prefix used across the whole country. Mobile traffic widens the gap, because a national operator routes its subscribers out through a small number of gateways, so a phone in another province leaves the network on a Brussels-registered block. Geolocation databases read the operator's own published location and repeat it.

Anyone checking an address learns more from the routing data than from the city label. The origin ASN says which network announces the prefix, and the netname on that exact prefix says how the holder describes the block, including whether it covers one city or a national footprint. Weigh that against what the registry actually records here. The 78 networks at BNIX and the 182 presences across seven facilities are operators with equipment in Brussels, which is a different set from the addresses that point to it.