123NET, Michigan’s premier carrier hotel and data center provider, has completed a major expansion of its Southfield DC1 Data Center. The upgrade adds advanced colocation space and infrastructure designed to meet the high-performance demands of AI inference and data-intensive applications.
The project features a 4‑megawatt power expansion, enabling high-density GPU deployments with liquid and air-cooled infrastructure while offering free on-site peering. This combination is designed to reduce latency and cut network costs for tenants, supporting real-time AI workloads at scale.
A core differentiator is the data center’s on‑premises Detroit Internet Exchange (DET‑iX) switching fabric, which provides direct peering and minimizes network hops for faster data exchange across tenant networks.
“Having DET‑iX inside the data center gives our clients instant access to a powerful peering ecosystem and a more direct path to end users,” said Dan Irvin, founder and CEO of 123NET. “It’s the only place in Michigan where massive GPU power meets free peering, significantly cutting network costs compared to traditional colocation.”
DET‑iX is among the world’s largest fee‑free internet exchanges, serving 85 members and handling traffic peaks of several terabits per second with 400 Gbps port capacities. The expansion positions 123NET to support large GPU clusters and latency‑sensitive, real‑time AI workloads across Michigan and beyond.
123NET continues to operate DC1 and the DET‑iX exchange, serving more than a dozen Fortune 500 companies and thousands of Michigan businesses with leading data center, network and voice services.
