Area Code:

301637

State Area Code:

301

City Prefix:

637

City:

ROCKVILLE

State:

Maryland

Zipcode:

20850, 20851, 20855

County (FIPS Code):

MONTGOMERY ( 24031 )

Country:

United States of America

Carrier:

LEVEL 3 COMMUNICATIONS, LLC -

Latitude & Longitude:

39.0867 -77.16

Type of Service:

Land Line

Time Zone:

Eastern

Businesses in Prefix:

22