T-Mobile US fibre joint venture Metronet expanded its reach across 3 million additional locations, which it claimed marks a significant achievement among dedicated fibre providers.

The fibre network now serves over 300 communities across 19 states, with more launches planned. The milestone follows Metronet’s acquisition by a JV between T-Mobile and KKR in July.

Under the new ownership, Metronet now operates as a wholesale builder and operator of fibre-optic networks. It serves residential customers multi-gigabit network speeds through a wholesale model and supports T-Mobile US’ Fiber business customers.

To support growth, T-Mobile and Metronet are acquiring other companies, closing the purchase of Minneapolis-based fibre ISP US Internet in September, which marked Metronet’s seventh acquisition in seven years.

Former T-Mobile CEO Mike Sievert touted the JV as a “capital light” approach for growing its fixed wireless internet service through deals to buy Metronet and FTTH provider Lumos Networks, the latter of which is also a joint venture.

During the company’s Q3 earnings call in October, former COO Srini Gopalan did not rule out M&A for additional fibre deals or joint ventures before taking over as CEO on 1 November.

As of Q3, T-Mobile is targeting 12 million FWA customers by 2028 and 12 million to 15 million homes passed through the fibre JVs.