Dublin · Ireland
PeeringDB records four exchanges in Dublin. INEX LAN1 has 107 participants, ahead of INEX LAN2 at 66, Equinix Dublin at 15 and MegaIX Dublin at 4, while 20 colocation facilities hold 276 network presences. An IP that geolocates to Dublin shows where an operator registered the block, not where a device sits.
Internet exchanges in Dublin
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 |
|---|---|---|
INEX LAN1 Internet Neutral Exchange Association CLG | 107 | none in the registry |
INEX LAN2 Internet Neutral Exchange Association CLG | 66 | |
Equinix Dublin Equinix Internet Exchange Dublin | 15 | |
MegaIX Dublin | 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 |
|---|---|---|
| Equinix DB1 - Dublin, CityWest | 64 | Unit 4027, Kingswood Road City West Business Campus, Saggart |
| Digital Realty Dublin DUB1-2 | 60 | Unit 35 Lavery Avenue Park West Business Park |
| Equinix DB2 - Dublin, Kilcarbery | 52 | Kilcarbery Business Park Nangor Road |
| Equinix DB3 - Dublin, Ballycoolin | 30 | Unit 2, North West Business Park Ballycoolin |
| Equinix DB4 - Dublin, Ballycoolin | 16 | Unit 14, Northwest Business Park Ballycoolin |
| Keppel Data Centres | Keppel DC Dublin 1 | 9 | Unit 4033-4035 Citywest Business Campus, Naas Road, Dublin 24, Ireland Citywest Business Park |
| Digital Realty Dublin DUB3 | 8 | Grange Castle Business Park Old Nangor Road |
| Digital Realty Dublin DUB10 | 7 | Unit 9 Blanchardstown Corporate Park Blanchardstown |
| Hibernia Atlantic Dublin International Exchange Center | 5 | International Exchange Center Clonshaugh Industrial Estate |
| Eircom Dublin (Citywest) | 4 | Unit 4050, Kingswood Avenue CityWest Business Park |
| euNetworks (Global Voice) | 4 | Unit 4033, Citywest Avenue Citywest Business Park |
| Digital Realty Dublin DUB13-14 | 4 | Profile Park Nangor Road |
Showing the 12 facilities with the most networks, of 20 recorded.
What a Dublin IP address tells you
Dublin's public peering concentrates on INEX, whose two LANs carry 107 and 66 participants. The city's other two exchange records, Equinix Dublin and MegaIX Dublin, list 15 and 4. Colocation weighs more than the exchange count suggests, with 20 facilities holding 276 network presences between them; Equinix DB1 in CityWest records 64 networks and Digital Realty Dublin DUB1-2 records 60. Of Ireland's mobile operators, Three Ireland (AS13280) and Vodafone Ireland (AS15502) appear on the INEX LAN2 participant list, and Eir's mobile ASN 15751 appears on none of the four exchanges.
An address that geolocates to Dublin need not belong to a device in Dublin. An operator announces address blocks against a registry record, and that record carries one address for an allocation that can cover subscribers anywhere in the country. Irish mobile traffic leaves through a small number of gateways, so a handset far from the city can still exit on a prefix whose registry entry names Dublin. Geolocation databases copy the location the operator publishes, and a block keeps its Dublin label until the operator edits that record.
Anyone checking an address learns more from the routing data than from the city name. The origin ASN says which network announces the prefix, and a mobile ASN such as 13280 or 15502 points to a mobile pool rather than to one of the 276 network presences sitting in Dublin colocation. The netname and the registry entry on the specific prefix, rather than on the parent allocation, show how narrowly the operator described that range and whether the city label rests on anything more than a head office address.
Mobile carriers in Ireland
A mobile address in Dublin 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 Dublin?
PeeringDB lists four. INEX LAN1 carries 107 participants and INEX LAN2 carries 66, with Equinix Dublin at 15 and MegaIX Dublin at 4. INEX LAN1 has the most participants of the four. The registry also records 20 colocation facilities in the city holding 276 network presences.
Do Irish mobile carriers peer in Dublin?
Two of the three do on the public record. Three Ireland (AS13280) and Vodafone Ireland (AS15502) sit on the INEX LAN2 participant list. Eir's mobile ASN 15751 appears on none of the city's four exchange records, which says nothing about private interconnection PeeringDB does not publish.
Does an IP that geolocates to Dublin mean the device is there?
No. The city label comes from the location an operator publishes for the block, and mobile traffic exits through a few gateways rather than from wherever the subscriber stands. Read the origin ASN and the netname on the specific prefix before you treat Dublin as a position.
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