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​​Dense Air is a subsidiary of Sidewalk Infrastructure Partners (SIP), spun out of Alphabet to build next-generation infrastructure technologies and systems.

We design, build, finance, and operate innovative shared network infrastructure to help communities, carriers, industry and enterprises realize the promise of ubiquitous cellular connectivity. ​

Delivering in a fraction of the time at a fraction of the cost an uninterrupted, constant, and powerful cellular connectivity experience. ​

​cellShare™ provides multi-carrier 4G and 5G Connectivity-as-a-Service to extend your coverage, enhance capacity, and improve your customers' overall experience, while increasing your building's financial performance.