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Area Code Lookup

Area Code 203 Phone Lookup

Connecticut, United States. Explore phone prefixes, caller activity, exchange details, and community reports connected to this area code.

782prefix records
66lookup pages
203area code

Phone Prefixes in This Area Code

Each prefix groups related phone numbers by exchange, location, carrier, and line type.

Landline

(203) 603

CityNew Haven
CountyNew Haven
CarrierSouthern New England Telephone Co.
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Landline

(203) 604

CityHartford
CountyHartford
CarrierBroadwing Communications Llc - Ct
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Wireless

(203) 605

CityWallingford
CountyNew Haven
CarrierCellco Partnership Dba Verizon Wireless - Ct
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Wireless

(203) 606

CityBloomfield
CountyHartford
CarrierOmnipoint Communications Inc. - Ct
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Landline

(203) 607

CityStamford
CountyFairfield
CarrierBrooks Fiber Communications Of Connecticut Inc-ct
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Landline

(203) 609

CityStamford
CountyFairfield
CarrierSouthern New England Telephone Co.
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Landline

(203) 610

CityWallingford
CountyNew Haven
CarrierConversent Communications Of Connecticut Llc
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Landline

(203) 612

CityNorwalk
CountyFairfield
CarrierGlobal Crossing Local Services Inc.-ct
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Landline

(203) 614

CityStamford
CountyFairfield
CarrierSouthern New England Telephone Co.
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Landline

(203) 615

CityBridgeport
CountyFairfield
CarrierSouthern New England Telephone Co.
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