Lyon · France
PeeringDB records one internet exchange in Lyon, BGP.Exchange - Lyon, with 31 participants, and three colocation facilities holding 51 network presences between them. ETIX Lyon #1 accounts for 27 of those and Free Pro - Lyon - Rock for 23. A Lyon IP address reports an operator's registry entry, not a device position.
Internet exchanges in Lyon
An exchange is a shared switch where networks hand traffic to each other directly. Participant counts come from PeeringDB, where each network maintains its own record.
| Exchange | Participants | Registry carriers peering |
|---|---|---|
BGP.Exchange - Lyon | 31 | none in the registry |
Exchange records: PeeringDB.
Colocation facilities
Buildings where networks put equipment. The network count is how many PeeringDB members list a presence there, which shows where capacity in the city sits.
| Facility | Networks present | Address |
|---|---|---|
| ETIX Lyon #1 | 27 | 81 Boulevard du Parc d Artillerie |
| Free Pro - Lyon - Rock | 23 | 60 avenue Rockefeller |
| Fiducial Cloud LYO1 | 1 | 19 Rue Cottin |
What a Lyon IP address tells you
Lyon's peering is modest next to its colocation count. BGP.Exchange - Lyon, the city's only exchange in PeeringDB, has 31 participants, which is also the city's whole peer count. Three facilities hold 51 network presences, split almost evenly between ETIX Lyon #1 with 27 and Free Pro - Lyon - Rock with 23, while Fiducial Cloud LYO1 records one. No mobile ASN for Bouygues Telecom, Orange or SFR appears on the exchange participant list, so the registry shows no public peering by French mobile carriers in the city.
An address that geolocates to Lyon need not have a device in Lyon behind it. Operators announce blocks from a registry record that carries one address for the whole allocation, and mobile traffic exits through a small number of gateways that need not be near the handset. Geolocation databases take the operator's published location at face value, so a Lyon result describes how an allocation was registered and not where the connection physically began.
Checking the origin ASN gives a better answer than the city name does. Find the ASN announcing the specific prefix, then read the netname on the narrowest inetnum that covers the address rather than on the parent block. A prefix originated by a French mobile ASN (3215, 5410, 15557) marks mobile traffic. A prefix originated by a network with space in one of Lyon's three facilities is one of the 51 presences PeeringDB counts across ETIX Lyon #1, Free Pro - Lyon - Rock and Fiducial Cloud LYO1.
Mobile carriers in France
A mobile address in Lyon is routed by one of the country's operators. Each entry lists the operator's ASNs, so you can check which network an address belongs to.
Questions
Which internet exchanges are in Lyon?
One is in PeeringDB. BGP.Exchange - Lyon has 31 participants, and that figure is the city's entire peer count. Colocation adds three facilities with 51 network presences, most of them in ETIX Lyon #1 with 27 and Free Pro - Lyon - Rock with 23.
Do French mobile carriers peer in Lyon?
Not according to the registry. BGP.Exchange - Lyon lists no mobile ASN for Bouygues Telecom, Orange or SFR among its 31 participants. PeeringDB records public peering, so a carrier can still interconnect privately in a Lyon facility without showing up on the exchange list.
Does an IP that geolocates to Lyon mean the device is there?
No. The city label comes from the registry record for the address block rather than from the device. Mobile operators route subscribers through a few gateways, so a Lyon address can serve a handset elsewhere in France. Check the origin ASN on the specific prefix.
Sources
- PeeringDB - exchanges, participant counts, facilities and network presence, snapshot 2026-09-07
- PROXIES.SX carrier and ASN registry - operator ASNs used to match peering participants