Cell towers in Cormontreuil (Marne)

Masts stand at Terrain de Sport Municipal, Les Blancs Monts, Rue Simon Dauphinot, 42 rue du Commerce, Chemin de la Sentelle and 3 avenue du Roussillon.

Over the past 12 months ANFR recorded 8 new systems here. ANFR has approved 2 new sites that are not live yet, plus additions on one existing mast. New: Free Mobile (4G and 5G, including 5G at 3.5 GHz) at Les Goisses and SFR (4G and 5G, including 5G at 3.5 GHz) at Avenue des Goisses. 5 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

Systems from 1999 are still on the register. Local 5G started with Orange in January 2021; Free Mobile followed in March 2022, Bouygues Telecom followed in June 2022. 2022 was the busiest year, with 15 new systems, most of them 5G.

ANFR lists a 34 m pylon at Chemin de la Sentelle as the tallest structure. The median height of measured supports is 28 m.

3 supports carry only Orange.

On 3.5 GHz, the fastest 5G band: Orange on all 4 masts, Free Mobile on 3 of its 4 masts, Bouygues Telecom on 2 of its 3 masts and SFR on 2 of its 3 masts.

Reims lies 5.6 km to the north and has 105 masts, more than here.

6,534 residents over 5 km²: supports are mostly pylons, not rooftops.

Supports split between 6 pylons, 1 building and 1 mast.

Figures above cover installations declared to ANFR as in service or technically operational, as of October 2026; approved projects are not counted.