COMMON LANGUAGE®
Location Codes:
CLLI™ Codes
COMMON LANGUAGE Location Codes (CLLI Codes) are essential to the quick and precise exchange of information that enables you to interconnect with customers and carriers.
This tool for identifying and describing network sites, network support sites, equipment locations and related job functions features a design flexible enough to support your growing network needs.
You may be interested in a more technical description of CLLI codes, answers to frequently asked questions, or information on the global database known as CLONES.
We also encourage Standard licensees to take advantage of CLLI codes classroom and self-paced training options.
There are three ways to obtain CLLI codes:
- The entire code set is available to Standard and Restricted licensees. Each plan offers a different level of benefits.
- CLLI Codes Online, the newest addition to The Information SuperStore, was created for non-licensees who must identify switches for NPA/NXX requests or establish points of interface (POI) with other carriers.
This service answers the needs of customers whose growing businesses do not yet require the greater value offered by our Standard and Restricted licenses.
You'll find that placing an order is easier than ever. Just provide us with basic customer and code-assignment information for one or more codes, accept the online agreement terms, and pay by credit card.
- Members of the National Telephone Cooperative Association may acquire CLLI codes through the NTCA.
For questions about a specific CLLI code, contact our Customer Support Center at 1-877-699-5577.