About this number
(571) 557 is a landline based telephone number operated by McI Worldcom Communications, I and is located in zip code 22304 in the city of Alexandria, Virginia, which is in Fairfax County, and is in the South. It has a Number Planning Area (NPA - also known as an Area Code) of 571 and Network Numbering Exchange (NXX - also known as a prefix) of 557. It has an Operating Company Number (OCN) of 7238. A Common Language Location Identifier (CLLI) of ALXNVACNDS0. As well as a Local access and transport area (LATA) of 236. It was first assigned for usage on 02/03/2010. Zip code 22304 has a population of 44,300 as of the 2010 census.