Krakow · Poland
PeeringDB records one internet exchange in Krakow, Poland. CIX - Cracow Internet Exchange has 8 participants, while seven colocation facilities in the city hold 37 network presences between them. Interconnection here sits mostly in the buildings rather than on the exchange. A Krakow IP address shows where an operator registered a block, not where a device sits.
Internet exchanges in Krakow
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 |
|---|---|---|
CIX KR CIX - Cracow Internet Exchange | 8 | 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 |
|---|---|---|
| S-NET KRAKOW DATA CENTER KRDC-2 | 8 | Krolewska 57 |
| Netia Data Center SOUL | 8 | Frassati-Gawrońskiej 3 |
| Orange Polska // Kraków | 7 | ul. Rakowicka 51 |
| Connected Krakow | 7 | Królewska 57 |
| S-NET KRAKOW DATA CENTER KRDC-1 | 6 | J. Lea 114 |
| WNET DC Krakow | 1 | Krolewska 65 |
| Dabka Data Center | 0 | Płk. Dąbka 2 |
What a Krakow IP address tells you
CIX - Cracow Internet Exchange carries 8 participants, a small fabric beside what the city's colocation floors hold. Seven facilities record 37 network presences. S-NET KRAKOW DATA CENTER KRDC-2 and Netia Data Center SOUL have 8 networks each, Orange Polska // Kraków and Connected Krakow 7 apiece, S-NET KRAKOW DATA CENTER KRDC-1 6, WNET DC Krakow one and Dabka Data Center none. PeeringDB records no mobile ASN from Orange Polska, Play or T-Mobile Polska on the exchange, so their Krakow traffic reaches other networks somewhere the registry does not show.
An address that geolocates to Krakow need not be a device in Krakow. Orange Polska, Play and T-Mobile Polska hold their address blocks against a company registry record and announce them from AS5617, AS39603, AS201019 and AS12912 regardless of which cell a handset uses. Mobile traffic leaves through a small number of gateways, so subscribers far apart share one prefix. Geolocation databases copy the location the operator published for the block, which for a national carrier is usually an administrative address rather than a cell site.
Reading the origin ASN and the netname on the exact prefix says more than a city label. AS5617, AS12912, AS39603 and AS201019 mark Polish mobile networks, while an origin belonging to one of the 37 networks colocated in Krakow points at a hosted machine on a fixed line. The size of the registered block and the name of its holder narrow it further. PeeringDB records where networks connect to each other and never where a subscriber is sitting.
Mobile carriers in Poland
A mobile address in Krakow 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 Krakow?
PeeringDB lists one, CIX - Cracow Internet Exchange, with 8 participants. The city's seven colocation facilities hold more networks between them, 37 in total, so a network reachable in Krakow is more often in a building such as Netia Data Center SOUL than on the exchange itself.
Do Polish mobile carriers peer in Krakow?
Not on the exchange. PeeringDB records no mobile ASN from Orange Polska (AS5617), Play (AS39603, AS201019) or T-Mobile Polska (AS12912) at CIX - Cracow Internet Exchange. Orange Polska does run a Krakow facility carrying 7 networks, and private interconnection never appears in the registry.
Does an IP that geolocates to Krakow mean the device is there?
No. It means a database ties that address block to Krakow, usually because the operator published the location itself. A handset on a mobile prefix can be anywhere the carrier covers, since its traffic exits through a few gateways rather than locally.
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