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AreaCode/Prefix (Exchange) 301-584

NPA/Area Code:	301	NXX Use Type:	LANDLINE
NXX/Prefix:	584	NXX Intro Version:	2000-06-13
City:	ROCKVILLE	New NPA:
State:	MD	Latitude:	39.0827
County:	MONTGOMERY	Longitude:	-77.0487
County Population:	971777	LATA:	236
ZIP Code:	20853	Overlay:
ZIP Code Pop:	29673	Rate Center:	WSNGTNZN12
ZIP Code Freq:	-1	OCN:	8697
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:	BALTIMORE-WASHINGTON TELEPHONE (BWT)

ZIP Code	Pop	Freq	City	State	County	Type
20853	29673	-1	ROCKVILLE	MD	MONTGOMERY	LANDLINE
20902	48841	-2	SILVER SPRING	MD	MONTGOMERY	LANDLINE
20906	64696	0	SILVER SPRING	MD	MONTGOMERY	LANDLINE

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