Rotterdam · Netherlands
PeeringDB records ten colocation facilities in Rotterdam holding 110 networks, against a single exchange, R_iX, with 10 participants. Capacity here sits in buildings rather than on exchange fabric, and Eurofiber Datacenter Rotterdam 2 holds 39 networks. A Rotterdam IP address shows where a network registered its block, not where a device is.
Internet exchanges in Rotterdam
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 |
|---|---|---|
R_iX Rotterdam Internet Exchange | 10 | 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 |
|---|---|---|
| Eurofiber Datacenter Rotterdam 2 | 39 | Schuttevaerweg 48 |
| Smartdc Rotterdam | 30 | Van Nelleweg 1 |
| Spaanse Kubus Rotterdam | 16 | Vlaardingweg 62 - 415 |
| NorthC Rotterdam Zestienhoven 1 | 11 | Tempelhof 5-11 |
| NorthC Rotterdam Waalhaven | 8 | Anthony Fokkerweg 40 |
| Cellnex Datacenter Rotterdam | 2 | Anthony Fokkerweg 40 |
| Intermax Schouwburgplein Rotterdam | 1 | Schouwburgplein 30-34 |
| Luna.nl Rotterdam Puntegale | 1 | Eendrachtsplein 4 3012 LA Rotterdam |
| EXA Edge DC Rotterdam | 1 | Vlaardingweg 62 3044 CK Rotterdam |
| NorthC Rotterdam Zestienhoven 2 | 1 | Tempelhof 5-11 |
What a Rotterdam IP address tells you
Rotterdam's weight is in colocation rather than peering. R_iX, the Rotterdam Internet Exchange, has 10 participants, while ten facilities hold 110 networks between them. Eurofiber Datacenter Rotterdam 2 has 39 networks and Smartdc Rotterdam has 30, with Spaanse Kubus Rotterdam at 16 and the two NorthC sites at Zestienhoven and Waalhaven adding 11 and 8. Five further buildings carry one or two networks each. No participant ASN at R_iX matches a network the carrier registry recognises as a mobile operator, and no Dutch mobile operators are listed.
An address that geolocates to Rotterdam may sit anywhere its operator reaches. Address blocks are announced from a registry record that lists one administrative location for a range used across many sites, and a network with equipment in a Rotterdam facility can announce that space from elsewhere. Mobile traffic leaves through a small number of gateways, so subscribers across a region share exit addresses. Geolocation databases take the operator's published location as given, which keeps a city label attached long after the traffic has moved.
The origin ASN and the netname on the specific prefix answer more than a city name does. The origin ASN says which network announces the range, and the netname with its registry record says who holds it and how they describe it. In a city where 110 networks sit in buildings but only 10 join the local exchange, a Rotterdam result more often reflects a hosting arrangement than a person connecting from the city.
Questions
Which internet exchange is in Rotterdam?
R_iX, the Rotterdam Internet Exchange, is the only one recorded, and it has 10 participants. The city's ten colocation facilities hold 110 networks between them, so most networks present in Rotterdam are in buildings rather than on the local exchange.
Which data centres in Rotterdam hold the most networks?
Eurofiber Datacenter Rotterdam 2 has the most, 39 networks, then Smartdc Rotterdam with 30 and Spaanse Kubus Rotterdam with 16. NorthC Rotterdam Zestienhoven 1 has 11 and NorthC Rotterdam Waalhaven has 8, while five further sites hold one or two each.
Does an IP that geolocates to Rotterdam mean the device is there?
No. The city comes from the location an operator registered for the address block. Rotterdam holds 110 networks across ten facilities, so much of the address space seen here is announced by hosting and transit networks whose customers connect from anywhere.
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