Dulles | VA


SummitIG provides the dominant dark fiber network platform interconnecting the most critical digital infrastructure in Northern Virginia, the world’s largest data center hub. A majority of the Company was acquired by SDC Capital Partners in 2019.


Digital Infrastructure

Our Portfolio

Over the past thirty years, Columbia Capital has invested in a portfolio of industry leaders in the communications, media, and enterprise technology industries. Our goal is to build a sector focused portfolio of companies at all stages of growth.