TeleGeography Logo

Dense Air sold to Sidewalk Infrastructure Partners

15 Dec 2021

Dense Air has reached a definitive agreement to be acquired by Sidewalk Infrastructure Partners (SIP). SIP is backed by Google parent company Alphabet and the Ontario Teachers’ Pension Plan (OTPP). Post-acquisition, Dense Air will operate within SIP’s CoFi innovation platform, which aims to make connectivity more open, shared, and inclusive through public-private partnerships.

SIP and Dense Air say they are poised to announce an inaugural US-based project that will involve partnering with cities to increase wireless broadband availability, with a focus on expanding access for typically underserved communities, such as students without connectivity at home.

Announcing the transaction, the companies noted: ‘With Dense Air’s spectrum assets, public-private partnerships, and track record of expanding connectivity, this acquisition will accelerate Dense Air’s mission of providing cost-effective 4G and 5G solutions and densifying and extending mobile networks to support a range of use cases, including enhanced mobile broadband, IoT, public safety, first responder networks, and remote learning.’

TeleGeography notes that Dense Air’s subsidiaries currently hold 5G-suitable spectrum in markets such as Australia, Belgium, Ireland, New Zealand and Portugal.

GlobalComms Database

Want more? Peruse the GlobalComms Database—the most complete source of intel about mobile, fixed broadband, and fixed voice markets.


TeleGeography is the definitive source for telecom news, numbers, and analysis. Explore the full research catalog.