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) 925-307

NPA/Area Code:	925	NXX Use Type:	LANDLINE
NXX/Prefix:	307	NXX Intro Version:	1999-05-10
City:	SAN RAMON	New NPA:
State:	CA	Latitude:	37.7393
County:	CONTRA COSTA	Longitude:	-121.9417
County Population:	1049025	LATA:	722
ZIP Code:	94583	Overlay:
ZIP Code Pop:	34859	Rate Center:	DUBLN-SNRM
ZIP Code Freq:	0	OCN:	7718
Time Zone:	Pacific (GMT -08:00)	FIPS:	06013
Observes DST:	Unknown	CBSA Code:	41860
CBSA Name:	San Francisco-Oakland-Fremont, CA
Prefix Status:	Active
Carrier/Company:	LEVEL 3 TELECOM OF CALIFORNIA, LP - CA

ZIP Code	Pop	Freq	City	State	County	Type
94583	34859	0	SAN RAMON	CA	CONTRA COSTA	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.