Lookup any area code or prefix (NPA/NXX) in our database using our FREE Area Code Finder Below:

For more info
support@area-codes.com
1-800-425-1169

AreaCode/Prefix (Exchange) 301-685

NPA/Area Code:	301	NXX Use Type:	LANDLINE
NXX/Prefix:	685	NXX Intro Version:	1998-08-14
City:	CLARKSBURG	New NPA:
State:	MD	Latitude:	39.2904
County:	MONTGOMERY	Longitude:	-77.2083
County Population:	971777	LATA:	236
ZIP Code:	20871	Overlay:
ZIP Code Pop:	13130	Rate Center:	DAMASCS236
ZIP Code Freq:	-1	OCN:	7529
Time Zone:	Eastern (GMT -05:00)	FIPS:	24031
Observes DST:	Unknown	CBSA Code:	47900
CBSA Name:	Washington-Arlington-Alexandria, DC-VA-MD-WV
Prefix Status:	Active
Carrier/Company:	TELEPORT COMMUNICATIONS AMERICA, LLC - DC

ZIP Code	Pop	Freq	City	State	County	Type
20871	13130	-1	CLARKSBURG	MD	MONTGOMERY	LANDLINE
21770	5164	-2	MONROVIA	MD	FREDERICK	LANDLINE
20872	13104	0	DAMASCUS	MD	MONTGOMERY	LANDLINE

Learn more on how to use the ZIP Code Information.

Get all NPA NXX records in one easy to use database. Read More.

Only online source to include ZIP Code info, provider company listings, and landline/wireless differentiation.
Instantly download NPANXX data covering the entire US for immediate use (Canada and American Territories included for reference only.)
Easily assign NPANXX codes to each of your sites for automated call routing.
NEW - Additional lat/lon info provided for the center of the serving area - only online source of this valuable information.
Includes inputs from the major telecommunications providers.