About this number
There is 1 OK rating for this phone number. (443) 620-6577 is a landline based telephone number operated by Level 3 Communications, LLC - and is located in zip code 21045 in the city of Columbia, Maryland, which is in Howard County, and is in the South. It has a Number Planning Area (NPA - also known as an Area Code) of 443, a Network Numbering Exchange (NXX - also known as a prefix) of 620 and a subscriber number of 6577. It has an Operating Company Number (OCN) of 6119. A Common Language Location Identifier (CLLI) of NOCLLIKNOWN. As well as a Local access and transport area (LATA) of 238. It was first assigned for usage on 11/07/2012. Zip code 21045 has a population of 38,288 as of the 2010 census.