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) 571-421

NPA/Area Code:	571	NXX Use Type:	LANDLINE
NXX/Prefix:	421	NXX Intro Version:	2010-12-21
City:	FALLS CHURCH	New NPA:
State:	VA	Latitude:	38.9212
County:	FAIRFAX	Longitude:	-77.2141
County Population:	1081726	LATA:	236
ZIP Code:	22043	Overlay:	L
ZIP Code Pop:	24302	Rate Center:	WSNGTNZN17
ZIP Code Freq:	-1	OCN:	8825
Time Zone:	Eastern (GMT -05:00)	FIPS:	51059
Observes DST:	Unknown	CBSA Code:	47900
CBSA Name:	Washington-Arlington-Alexandria, DC-VA-MD-WV
Prefix Status:	Active
Carrier/Company:	LEVEL 3 COMMUNICATIONS, LLC - VA

ZIP Code	Pop	Freq	City	State	County	Type
22043	24302	-1	FALLS CHURCH	VA	FAIRFAX	LANDLINE
22027	2362	-2	DUNN LORING	VA	FAIRFAX	LANDLINE
22102	21985	0	MC LEAN	VA	FAIRFAX	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.