Turin · Italy
PeeringDB records one exchange in Turin, TOP-IX (Consorzio Top-IX), with 103 participants, plus seven colocation facilities holding 45 network presences. ITGate PdF (TRN1/TRN2) is the busiest of them at 25 networks. An IP that geolocates to Turin reflects where an operator registered the address block rather than where a device connects.
Internet exchanges in Turin
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 |
|---|---|---|
TOP-IX Consorzio Top-IX | 103 |
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 |
|---|---|---|
| ITGate PdF (TRN1/TRN2) | 25 | Corso Svizzera 185 Building 3 |
| CSI Piemonte | 6 | 216 Corso Unione Sovietica |
| Host.it DC1 | 5 | Corso Svizzera 185 |
| Retelit S.p.A. Torino | 5 | Corso Svizzera 185 |
| COLT Datacenter Turin | 3 | Via Livorno, 60 |
| BBBell Torino | 1 | BUILDING 1 Corso Svizzera 185 |
| DnsHosting Torino PdF | 0 | Corso Svizzera 185 |
What a Turin IP address tells you
TOP-IX is all of Turin's public peering in this data, and its 103 participants equal the city's peer count. Colocation is smaller than that number suggests, with 45 network presences spread over seven facilities. ITGate PdF (TRN1/TRN2) holds 25, CSI Piemonte 6, and Host.it DC1 and Retelit S.p.A. Torino 5 each. WindTre's AS1267 appears in TOP-IX's carrier records. Vodafone's AS30722 and TIM's AS16232 do not, which leaves their interconnection around Turin outside the public exchange record.
An address that geolocates to Turin may sit on a device far from it. An operator announces blocks from a registry entry giving a single location for a whole allocation, and geolocation providers follow that entry. With mobile addresses the distance runs to the size of the country, because a carrier assigns subscribers from pools that break out at a handful of gateways. The city a lookup returns then describes the operator's paperwork rather than the handset in someone's hand.
Reading the origin ASN and the netname on the exact prefix gives a firmer answer. AS1267 or AS24608 on a block points at WindTre, and AS30722 or AS16232 points at Vodafone or TIM; each of them can announce a mobile range from anywhere on its network. An ASN registered to a network inside ITGate PdF (TRN1/TRN2) or CSI Piemonte points instead at fixed equipment in the city, which is a different claim about where a machine sits.
Mobile carriers in Italy
A mobile address in Turin 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 Turin?
One. PeeringDB lists TOP-IX, run by Consorzio Top-IX, with 103 participants, and those 103 are also the city's total unique peers. Seven colocation facilities add 45 network presences, the biggest count being 25 at ITGate PdF (TRN1/TRN2).
Do Italian mobile carriers peer in Turin?
WindTre's AS1267 is in TOP-IX's carrier records. Vodafone's AS30722 and TIM's mobile AS16232 are not recorded at the exchange, so the registry shows no public peering for them in Turin, though it cannot see private links between networks.
Does an IP that geolocates to Turin mean the device is there?
No. The label reflects the location an operator entered for the address block in a registry, and mobile ranges are announced nationally. The origin ASN and the netname on the prefix tell you whether the address belongs to a subscriber pool or to a network hosted in Turin.
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