ColoMap

T-Mobile USA (AS21928)

42 colocation facilities on-net · across 12+ metros

T-Mobile USA (AS21928) is the backbone of the Un-carrier's nationwide network, headquartered in Bellevue, Washington and operating the largest 5G network in the United States. AS21928 hauls traffic for T-Mobile's mobile core, its fast-growing 5G fixed-wireless home and business internet service, and wholesale IoT and MVNO partners, peering broadly at major US exchanges and interconnecting in carrier hotels across the country. T-Mobile has also pushed into wireline fiber through joint ventures with EQT (Lumos) and KKR (Metronet), both closed in 2025, extending its broadband reach beyond the wireless footprint.

T-Mobile USA (AS21928) is on-net at 42 colocation facilities in the ColoMap directory.

Top metros where T-Mobile USA (AS21928) is reachable: Santa Clara, CA, US, Washington, DC, US, Chicago, IL, US, Louisville, CO, US, Newark, NJ, US.

Use the directory below to find a facility on-net with T-Mobile USA (AS21928), or request a quote tailored to your connectivity requirements.

Top metros where T-Mobile USA (AS21928) is on-net

Operators co-located with T-Mobile USA (AS21928)

  • Equinix 18
  • Digital Realty 7
  • CoreSite 2
  • DataBank 2
  • 165 Halsey Street 1
  • EdgeConneX 1
  • Hivelocity 1
  • IPXON Networks 1

Facilities on-net with T-Mobile USA (AS21928)