Graz · Austria
PeeringDB records one exchange in Graz, GraX, the Grazer Internet eXchange, with 4 participants, and three facilities holding 12 network presences, most of those at Citycom Datacenter Graz with 6. GraX is the only exchange in the city and its best connected one. An IP that geolocates to Graz identifies the operator that registered the block, not the location of a device.
Internet exchanges in Graz
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 |
|---|---|---|
GraX Grazer Internet eXchange | 4 | 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 |
|---|---|---|
| Citycom Datacenter Graz | 6 | Neufeldweg 162 |
| XINON Graz | 5 | Neufeldweg 162 |
| EXA Edge DC Graz | 1 | Neufeldweg 162 8041 Graz |
What a Graz IP address tells you
Graz holds more of its recorded network presence in buildings than at its exchange. GraX has 4 participants, and since PeeringDB lists no other exchange in the city, that is the whole exchange peer count. Three facilities hold 12 network presences between them, Citycom Datacenter Graz with 6, XINON Graz with 5 and EXA Edge DC Graz with 1. The mobile ASNs registered to A1 Telekom Austria, Drei and Magenta Telekom do not appear in the GraX participant list, so the registry shows no mobile peering in the city.
An address that geolocates to Graz may sit on a device elsewhere. Operators announce address blocks from registry records that carry one location, and geolocation databases take that location as the answer for the whole range. Mobile traffic widens the distance, since sessions from across a network leave through a small number of gateways. With 4 participants at GraX and 12 network presences in local facilities, a Graz label in a lookup describes a registry entry rather than a street.
The useful check is the origin ASN on the exact prefix, together with the netname on the registry object. A block originated by AS8447, AS8562, AS8437, AS25255 or AS8412 is an Austrian mobile range whichever city a lookup prints. A block that traces back to one of the city's three facilities or to a GraX participant sits with a hosting or regional network instead, and the registry record says which one holds it.
Mobile carriers in Austria
A mobile address in Graz 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 exchange is in Graz?
GraX, the Grazer Internet eXchange, with 4 participants, is the only exchange PeeringDB records in Graz. The registry adds three facilities in the city holding 12 network presences, Citycom Datacenter Graz with 6, XINON Graz with 5 and EXA Edge DC Graz with 1.
Do Austrian mobile carriers peer in Graz?
Not according to PeeringDB. The four ASNs at GraX include none of the mobile numbers listed for A1 Telekom Austria, Drei or Magenta Telekom. The registry therefore records no such peering, which is a weaker statement than saying none exists.
Does an IP that geolocates to Graz mean the device is there?
No. A city label comes from the location an operator published for the address block, and mobile networks route subscriber sessions out through a small number of gateways. Check the origin ASN and the netname on the prefix to see which network holds the address.
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