508-318 Exchange Data

The following carriers administer the 508-318 exchange:

  • XO Massachusetts, Inc.
  • Level 3 Communications, LLC - MA
  • Bandwidth.com CLEC, LLC - MA

These carriers direct calls through a CLLI identified as CMBRMAMQDS0 in the NATICK rate center.

The 508-318 exchange has 4 functioning thousands blocks: