Verizon Communications in Waltham, MA
These numbers are located in the city of Waltham part of Middlesex county. There are a few other subcodes that cover this area as well so take care not to confuse them.
Middlesex county is situated in Massachusetts and operates ET (UTC -05:00) time. This number group covers the 2451, 2453, 2454, & 2452 zip codes.