Oulu · Finland
PeeringDB records two exchange listings in Oulu, FICIX 3 (Oulu) with 11 participants and an IPv6 MTU 9000 LAN with two, plus four colocation facilities holding 16 networks. FICIX 3 (Oulu) carries the mobile ASNs of all three Finnish carriers, Elisa, Telia and DNA. An address geolocating here reflects an operator's registration, not a device's position.
Internet exchanges in Oulu
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 |
|---|---|---|
FICIX 3 (Oulu) FICIX 3 Oulu | 11 | |
FICIX 3 (Oulu) IPv6 MTU 9000 | 2 |
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 |
|---|---|---|
| DNA Oulu Torikatu | 10 | Torikatu 18 |
| Glesys Oulu 1 | 2 | Elektroniikkatie 13-15 90590 Oulu |
| Glesys Oulu 2 | 2 | Elektroniikkatie 5 90590 Oulu |
| Glesys Oulu 3 | 2 | Yrttipellontie 1 |
What a Oulu IP address tells you
FICIX 3 (Oulu) accounts for 11 of the 13 exchange participants PeeringDB records in the city, and a second listing for the same exchange, an IPv6 LAN with MTU 9000, holds the other two. Finland's three mobile carriers all appear on the main LAN, Elisa as AS719, Telia as AS1759 and DNA as AS16086, while only Telia is attached to the IPv6 listing. Colocation holds more networks than the exchange does. Four buildings report 16 networks between them, DNA Oulu Torikatu with 10 and each of the three Glesys Oulu sites with two.
An address that a lookup places in Oulu need not belong to a device in Oulu. Elisa, Telia and DNA announce address blocks from a registry record that carries one location for an allocation covering many towns, and mobile traffic leaves each network through a small number of gateways that can sit well away from the handset. Geolocation databases read the operator's own published location and repeat it, so a subscriber elsewhere in Finland can resolve to Oulu without any packet touching FICIX 3 or the four facilities on record.
The origin ASN and the netname on the specific prefix tell you more than the city field does. The ASN names the network that announced the block, and the netname says how that network described the range, including whether it is set aside for mobile subscribers. Seeing AS16086 or AS719 on a prefix identifies the carrier, not the town the handset sits in. Oulu's 11 participants and 16 facility networks describe where peering is documented, not where any single address sits.
Mobile carriers in Finland
A mobile address in Oulu 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 Oulu?
PeeringDB lists FICIX 3 (Oulu) with 11 participants and a separate IPv6 MTU 9000 listing for the same exchange with two. Networks that peer privately inside one of the four colocation facilities rather than at the exchange are not counted in those figures.
Do Finnish mobile carriers peer in Oulu?
Yes. FICIX 3 (Oulu) has the mobile ASNs of all three Finnish carriers attached, Elisa (AS719), Telia (AS1759) and DNA (AS16086), and Telia also appears on the exchange's IPv6 MTU 9000 listing. That records peering presence at the exchange rather than where subscribers connect.
Does an IP that geolocates to Oulu mean the device is there?
No. The city label comes from the address block's registration and the operator's published location rather than from the device. A handset connecting through Elisa, Telia or DNA can sit elsewhere in Finland and still resolve to Oulu. Check the origin ASN and the prefix netname instead.
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