Telecom Routing Administration

The industry recognized source for routing and rating data

About Us

Telecom Routing Administration (TRA) is an organiztaion within iconectiv that supports the telecommunications industry by providing essential data services and products for completion of Public Switched Telephone Network (PSTN) calls and proper rating of these calls. Since 1984, TRA has served as a focal point for the process of inter-company exchange of pertinent rating and routing data and has been the industry recognized source of routing and rating information products. By performing the information collection, validation and dissemination processes for its data providers and data product customers, TRA meets the industry's needs to share numbering and networking information concerning access to the local exchange environment in a cost effective, accurate, and timely manner.

TRA data products provide the most up-to-date snapshot of the PSTN in the North American Numbering Plan (NANP). Several industry committees, associations, etc., provide regular input into the TRA data products' formats and content. These bodies represent a wide cross section of companies, interests, and technologies. In addition, TRA and its products are referenced by and are an essential component of numerous industry, state, and federal guidelines, procedures, and policies. Through this process, TRA is able to reflect the ever-changing nature of the industry and its related data exchange needs (e.g. thousands block pooling, next generation equipment, VoIP, etc.). The TRA web site, www.trainfo.com, provides information on the data products available from TRA and permits downloading, at no charge, of sample product data files and several documents pertaining to TRA products and industry processes. 

The data collection process employed by TRA permits local service providers (wireline local carriers, cellular carriers, Personal Communication Services (PCS) providers, etc.) the ability to report data on NXXs (also known as Central Office Codes, prefixes, and exchanges), as well as information on the 1000 level line assignments made within an NXX, switch-to-switch homing, switch services, and other related routing data in a cost effective and timely manner. It also provides an effective means to report data used in rating a call (although actual rates are not provided). Rating data includes identifying the time zone a prefix is in, whether the area covered observes daylight savings time, the basic "place" (e.g. town and state) served by the prefix, etc. Vertical and Horizontal (V&H) coordinates (derived from longitude and latitude) are provided for switch locations and used for access billing, and also for the "rate center" used in certain call rating processes.  Geographical data, rate centers, localities, postal data, are also available in various products and can be used to associate numbering to the areas the numbers are rated and assigned.

The area defined by the NANP currently comprises the United States (including The Commonwealth of the Northern Mariana Islands, Guam, Puerto Rico, American Samoa, and the US Virgin Islands), Canada, Bermuda, and several island countries in the Caribbean. All these areas utilize a telephone number format of a 3 digit Area Code + 3 digit Prefix + 4 digit line number, and are all administered under the umbrella of the NANP.