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  3. 990 Prefixes

990 Area Code Phone Directory

Phone Prefixes in the 990 Area Code

(990) 2XX (990) 3XX (990) 4XX (990) 5XX (990) 6XX (990) 7XX (990) 8XX (990) 9XX

Information for Area Code 990

State: OH
Largest City in Area: CINCINNATI

Where is Area Code 990?

Area code (990) is in the state of OH. Below, are the major cities in the area code (990).

Area Codes Starting with 9

Major Cities in 990

CINCINNATI, OH (21)
ONTARIO, CA (17)
JACKSONVILLE, FL (14)
SAN BERNARDINO, CA (13)
FONTANA, CA (11)
RANCHO CUCAMONGA, CA (11)
RIVERSIDE, CA (11)
CORONA, CA (9)
UPLAND, CA (9)
POMONA, CA (8)