London · United Kingdom
PeeringDB records 14 internet exchanges in London and 45 colocation facilities holding 2,039 network presences. LINX LON1 is the best connected, with 837 participants, ahead of LINX LON2 at 319 and LONAP at 310. A London IP address tells you where an operator registered the block, not where a device sits.
Internet exchanges in London
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 |
|---|---|---|
LINX LON1 London Internet Exchange Ltd. | 837 | Tele2 Eesti AS1257WindTre AS1267Vodafone AS1273AT&T AS2686EE AS2856TDC AS3292Swisscom AS3303Deutsche Telekom AS3320China Telecom AS4134Telstra AS4637China Unicom AS4837Vodafone AS5378Eir AS5466Orange AS5511Elisa AS6667Sunrise AS6730Gibtelecom AS8301WE AS8452e& AS8966Orange Romania AS9050Movistar AS12956SFR AS15557Salt AS15796du AS15802 |
LINX LON2 London Internet Exchange Ltd. | 319 | |
LONAP London Access Point | 310 | |
BGP.Exchange - London | 133 | none in the registry |
Equinix London Equinix Internet Exchange London | 55 | |
IXP UK LON Internet Exchange Point - London | 19 | none in the registry |
RapidIX LON1 Rapid Internet Exchange | 7 | none in the registry |
BBIX London BroadBand Internet eXchange London | 3 | none in the registry |
SBIX London Securebit Internet Exchange London | 1 | none in the registry |
BGPHaus | 1 | none in the registry |
LONIX UK London IX Limited | 1 | none in the registry |
LONAP Multicast | 0 | none in the registry |
Stelia IX | 0 | none in the registry |
European Edge IX European Edge Internet Exchange (EE-IX) | 0 | 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 |
|---|---|---|
| Telehouse - London (Docklands North) | 496 | 14 Coriander Avenue |
| Equinix LD8 - London, Docklands | 313 | 6-9 Harbour Exchange Square |
| Telehouse - London (Docklands East) | 224 | 14 Coriander Avenue |
| Telehouse - London (Docklands West) | 196 | 14 Coriander Avenue |
| Digital Realty London LON1-3 | 119 | 11 Hanbury Street |
| Telehouse - London (Docklands North Two) | 113 | 14 Coriander Avenue |
| Digital Realty London LHR20 | 92 | Sovereign House 227 Marsh Wall |
| Telehouse - London (Docklands South) | 40 | 1 Blackwall Way Paul Julius Close |
| Verne London | 39 | 36-43 Great Sutton Street |
| Redcentric London Data Centre | 37 | 80 Clifton Street |
| Digital Realty London LHR19 | 36 | Cloud House Millharbour 47 |
| Global Switch London North | 32 | 240 East India Dock Road |
Showing the 12 facilities with the most networks, of 45 recorded.
What a London IP address tells you
London's peering weight sits in a handful of fabrics. LINX LON1 carries 837 participants, more than LINX LON2 at 319 and LONAP at 310 put together, and 1,686 distinct networks appear across the 14 exchanges PeeringDB lists here. Colocation carries a similar load. Telehouse London Docklands North holds 496 networks and Equinix LD8 holds 313, part of 2,039 network presences spread over 45 facilities. Of the UK mobile operators in the carrier registry, EE is the one with an exchange record in the city, appearing under AS2856 at both LINX LON1 and LINX LON2.
An address that geolocates to London may not be a device in London. Operators announce address blocks from a registry record, and that record carries one administrative address, often an office rather than the site the traffic leaves from. Mobile traffic reaches the internet through a small number of gateways, so a single EE or Vodafone block can cover subscribers across the country while resolving to London. Geolocation databases read the operator's own published location and inherit whatever it says.
Someone checking a London address gets more from the origin ASN and the netname on the specific prefix than from the city label. The carrier registry gives AS2856 and AS12576 to EE, AS29180 to O2 and AS25135 to Vodafone, and a prefix originating from one of those is a mobile block whichever city a database prints. A prefix announced by a network that peers at LINX LON1 or sits in a Docklands building is a different kind of address, and the route object says which one you have.
Mobile carriers in the United Kingdom
A mobile address in London 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 London?
PeeringDB lists 14. LINX LON1 is the best connected at 837 participants, followed by LINX LON2 with 319, LONAP with 310, BGP.Exchange - London with 133 and Equinix London with 55. The rest, among them BBIX London and SBIX London, sit in single digits or record no participants at all.
Do UK mobile carriers peer in London?
One of them does in this data. EE appears at LINX LON1 and LINX LON2 under AS2856. O2's AS29180 and Vodafone's AS25135 are not in the participant lists for any London exchange, which says what PeeringDB records rather than what the operators run.
Does an IP that geolocates to London mean the device is there?
No. The city label comes from the address block's registry record and the operator's published location, not from any measurement of the device. Mobile addresses route through few gateways, so a block registered in London can carry subscribers anywhere in the United Kingdom.
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