Frankfurt · Germany
PeeringDB lists 18 exchanges in Frankfurt, Germany, and 36 colocation facilities holding 2,246 network presences. DE-CIX Frankfurt is the best connected with 1,018 participants, ahead of KleyReX at 276. An address that geolocates to Frankfurt shows where a network registered or routes address space, not where a device sits.
Internet exchanges in Frankfurt
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 |
|---|---|---|
DE-CIX Frankfurt | 1,018 | Nova AS1241Tele2 Eesti AS1257WindTre AS1267AT&T AS2686Vodafone AS3209TDC AS3292Swisscom AS3303Deutsche Telekom AS3320China Telecom AS4134Claro AS4230Telstra AS4637China Unicom AS4837Bouygues Telecom AS5410Elisa AS6667Sunrise AS6730O2 AS6805A1 Telekom Austria AS8447WE AS8452A1 Bulgaria AS8717Telia Lietuva AS8764Vivacom AS8866Unité AS8926e& AS8966Orange Romania AS9050T-Mobile Polska AS12912Movistar AS12956Bitė Lietuva AS13194SFR AS15557Salt AS15796du AS15802Kyivstar AS15895Vodafone Ukraine AS21497Orange Polska AS29535Silknet AS35805AIS AS45430Yettel Bulgaria AS50020 |
KleyReX KleyReX Internet Exchange | 276 | none in the registry |
BGP.Exchange - Frankfurt | 241 | none in the registry |
PITER-IX Frankfurt | 161 | none in the registry |
MegaIX Frankfurt Megaport MegaIX Frankfurt | 110 | none in the registry |
Equinix Frankfurt Equinix Internet Exchange Frankfurt | 79 | none in the registry |
ERA-IX Frankfurt | 78 | none in the registry |
FogIXP Frankfurt FogIXP Regional IXP Frankfurt | 63 | none in the registry |
Giganet IXN Frankfurt | 49 | none in the registry |
1-DE FREE 1-DE Internet Exchange Germany | 22 | none in the registry |
STACIX Staclar Internet Exchange | 8 | none in the registry |
City-IX Frankfurt | 7 | none in the registry |
NEXTIX | 7 | none in the registry |
TievoluIX Tievolu Internet Exchange | 5 | none in the registry |
SmartIX SmartIX Frankfurt Internet Exchange | 2 | none in the registry |
Pfcloud IX | 1 | none in the registry |
VexIX | 1 | none in the registry |
Electron 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 |
|---|---|---|
| Digital Realty Frankfurt FRA1-27 | 614 | Hanauer Landstrasse 298 |
| Equinix FR5 - Frankfurt, KleyerStrasse | 548 | Kleyerstrasse 90 |
| Equinix FR7 - Frankfurt, Gutleutstrasse | 153 | Gutleutstrasse 310 Frankfurt am Main |
| NTT Frankfurt 1 Data Center (FRA1) | 141 | Eschborner Landstrasse 100 |
| Equinix FR4 - Frankfurt, West | 111 | Lärchenstrasse 110 |
| Telehouse - Frankfurt | 78 | Kleyerstrasse 75-87 |
| NewTelco Frankfurt | 76 | Rebstöckerstrasse 25-31 |
| Equinix FR2 - Frankfurt, North | 71 | Kruppstrasse 121-127 |
| Equinix FR6 - Frankfurt, West | 70 | Lärchenstrasse 110 |
| firstcolo - FRA4 | 67 | Kruppstrasse 105 |
| ITENOS Frankfurt (FRA1) | 64 | Kleyerstrasse 90 / Rebstoeckerstrasse 25-31 |
| iNTERWERK Rechenzentrum | 47 | Dieselstraße 37 |
Showing the 12 facilities with the most networks, of 36 recorded.
What a Frankfurt IP address tells you
Frankfurt's routing weight sits in its exchanges. DE-CIX Frankfurt carries 1,018 participants; KleyReX adds 276, BGP.Exchange - Frankfurt 241 and PITER-IX Frankfurt 161. Colocation is dense too, with 2,246 network presences across 36 facilities, headed by Digital Realty Frankfurt FRA1-27 at 614 networks and Equinix FR5 at 548. All three German mobile operators peer at DE-CIX Frankfurt, Deutsche Telekom on AS3320, Vodafone on AS3209 and O2 on AS6805.
An address that geolocates to Frankfurt is not evidence of a device in Frankfurt. An operator announces a block from a registry record whose address may be a head office or a national allocation, and mobile traffic in Germany leaves through a small number of gateways, so a phone in another city can appear on a Frankfurt-registered prefix. Geolocation databases read the operator's published location for the block, which means the city label follows paperwork and routing design rather than the handset's position.
Someone checking a Frankfurt address gets more from the routing data than from the city string. The origin ASN says which network announces the prefix, and in Germany that separates Deutsche Telekom, Vodafone and O2 mobile ranges from the hosting networks that make up most of the 2,246 presences in Frankfurt facilities. The netname and the registry record on the specific prefix, rather than the city field in a database, show what the block was allocated for.
Mobile carriers in Germany
A mobile address in Frankfurt 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 Frankfurt?
PeeringDB records 18 exchanges in Frankfurt. DE-CIX Frankfurt is the best connected at 1,018 participants, followed by KleyReX with 276, BGP.Exchange - Frankfurt with 241, PITER-IX Frankfurt with 161 and MegaIX Frankfurt with 110. Several smaller exchanges list fewer than ten participants each.
Do German mobile carriers peer in Frankfurt?
Yes. DE-CIX Frankfurt lists Deutsche Telekom (AS3320), Vodafone (AS3209) and O2 (AS6805) among its participants. Peering there tells you the operator exchanges traffic in Frankfurt; it does not tell you where that operator's subscribers or their devices are.
Does an IP that geolocates to Frankfurt mean the device is there?
No. The city label comes from the operator's registry record and published location for the block, and mobile networks route subscribers through a few gateways. A Frankfurt result is consistent with a device elsewhere in Germany, so check the origin ASN and the prefix netname.
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