About this number
(571) 521-0198 is a landline based telephone number operated by Cavalier Telephone, LLC and is located in zip code 22070 in the city of Herndon, 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, a Network Numbering Exchange (NXX - also known as a prefix) of 521 and a subscriber number of 0198. It has an Operating Company Number (OCN) of 4725. A Common Language Location Identifier (CLLI) of HRNDVA13DS0. As well as a Local access and transport area (LATA) of 236.