Zurich · Switzerland
PeeringDB records eight internet exchanges in Zurich with 702 participant entries between them, and eight colocation facilities holding 256 network presences. 4b42 Internet Exchange Point has the most participants at 287, ahead of SwissIX at 236. An address that geolocates to Zurich reflects where an operator registered the block, not where a device sits.
Internet exchanges in Zurich
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 |
|---|---|---|
4b42 Internet Exchange Point | 287 | none in the registry |
SwissIX SwissIX Internet Exchange | 236 | |
BGP.Exchange - Zurich | 100 | none in the registry |
Equinix Zurich Equinix Internet Exchange Zurich | 40 | |
Community-IX.ch | 18 | none in the registry |
AKIX Akaere Internet Exchange Point | 12 | none in the registry |
FogIXP Zurich | 9 | none in the registry |
GE-CIX Global Internet Exchange & Peering Network | 0 | 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 |
|---|---|---|
| Equinix ZH4 - Zurich | 84 | Josefstrasse 225 |
| colozueri.ch Zurich | 60 | Badenerstrasse 569 |
| Equinix ZH5 - Zurich, South | 54 | Allmendstrasse 13 Oberengstringen |
| Equinix ZH2 - Zurich | 50 | Josefstrasse 225 |
| Templus DC Zurich ZRH01 | 4 | Badenerstr. 820 |
| nLighten Zurich ZRH1 | 4 | Josefstrasse 225 8005 Zürich |
| RZZH | 0 | Zuercherstrasse |
| aspectra Zürich | 0 | Werbestrasse 4 |
What a Zurich IP address tells you
Zurich holds most of the Swiss peering recorded in PeeringDB. Eight exchanges are listed, and participation falls steeply down that list, from 4b42 Internet Exchange Point at 287 participants and SwissIX at 236 to BGP.Exchange - Zurich at 100 and Equinix Zurich at 40, with Community-IX.ch, AKIX and FogIXP Zurich under 20 each. Colocation carries similar weight, with 256 network presences across eight facilities, 84 of them in Equinix ZH4 and 60 in colozueri.ch. Swisscom (AS3303), Sunrise (AS6730) and Salt (AS15796) all appear on the SwissIX participant list, and Swisscom and Salt also peer at Equinix Zurich.
An address that geolocates to Zurich need not belong to a device in Zurich. An operator announces address blocks against a registry record that usually carries one address for the whole company, so a national block registered to a Zurich office reads as Zurich everywhere it is queried. Swiss mobile traffic leaves through a small number of gateways, and a handset connected in another canton can exit through equipment here. Geolocation databases follow the operator's own published location, which is why an entire mobile pool can resolve to a single city.
The origin ASN on the specific prefix tells you more than the city label does. A prefix originated by AS3303, AS6730 or AS15796 is mobile access wherever the database places it, while one originated by a network that peers at 4b42 or holds space in Equinix ZH4 is hosting. Read the netname and the registry record on that prefix rather than the city string, and check the participant lists of the exchanges named here to see which networks actually keep equipment in Zurich.
Mobile carriers in Switzerland
A mobile address in Zurich 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 Zurich?
PeeringDB lists eight: 4b42 Internet Exchange Point with 287 participants, SwissIX with 236, BGP.Exchange - Zurich with 100, Equinix Zurich with 40, Community-IX.ch with 18, AKIX with 12, FogIXP Zurich with 9, and GE-CIX with no participants recorded.
Do Swiss mobile carriers peer in Zurich?
Yes. SwissIX shows the mobile ASNs of Swisscom (AS3303), Sunrise (AS6730) and Salt (AS15796) among its participants, and Equinix Zurich shows Swisscom and Salt. The other Zurich exchanges list no mobile carrier ASNs in this snapshot.
Does an IP that geolocates to Zurich mean the device is there?
No. The city label comes from the operator's registry record and its published location, not from the device. Mobile blocks in particular cover a whole network and exit through a few gateways, so a Zurich label can cover a subscriber anywhere in the country.
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