203 Area Code Prefixes Directory

If you know the complete number you’re looking up, please use the Phone Number Search above. Or to explore prefixes in different coverage areas, please use the tables below.

Bandwidth.com Clec
Carrier

Coverage Area
Counties: New Haven,
Cities: New Haven, Newtown, Seymour

Usa Mobility Wireless
Carrier

Coverage Area
Counties: New Haven,
Cities: New Haven, Bridgeport, Stamford, Danbury, Norwalk

Cablevision Lightpath
Carrier

Coverage Area
Counties: Fairfield, , New Haven
Cities: Darien, Wilton, Trumbull, Huntington, Ridgefield, Stamford, Milford, Fairfield, New Haven, Greenwich, Old Greenwich, Bridgeport, Norwalk, Westport, Redding, New Canaan, Danbury

Teleport Communications America
Carrier

Coverage Area
Counties: , New Haven, Fairfield, Litchfield
Cities: Guilford, New Haven, Wallingford, Newtown, Westport, Madison, Ridgefield, Old Greenwich, Fairfield, Wilton, Wolcott, New Canaan, Derby, Huntington, Seymour, Naugatuck, Meriden, Norwalk, Danbury, Bridgeport, Darien, Woodbury, Trumbull, Stamford, Waterbury, Cheshire, Branford, Milford

Southern New England Telephone Co.
Carrier

Coverage Area
Counties: , New Haven, Litchfield, Fairfield
Cities: Danbury, Westport, Bridgeport, Huntington, Norwalk, New Haven, Meriden, Waterbury, Madison, Cheshire, Stamford, Fairfield, Trumbull, Southbury, Woodbury, Wallingford, Newtown, Milford, Branford, Ridgefield, Guilford, Northford, Redding, Wilton, Old Greenwich, Darien, Naugatuck, Ansonia, New Canaan, Wolcott, Seymour

Comcast Phone Of Connecticut
Carrier

Coverage Area
Counties: , New Haven
Cities: Branford, New Haven

Omnipoint Communications
Carrier

Coverage Area
Counties: , New Haven
Cities: Bridgeport, Derby, Danbury, Norwalk, New Haven, Stamford, Meriden, Waterbury

Brooks Fiber Communications Of Connecticut Inc-ct
Carrier

Coverage Area
Counties: , Fairfield, New Haven
Cities: Old Greenwich, Darien, Stamford, Bridgeport, Danbury, Fairfield, New Canaan, Waterbury, Meriden, Greenwich, Norwalk, New Haven

Conversent Communications Of Connecticut
Carrier

Coverage Area
Counties: , New Haven
Cities: Norwalk, Bridgeport, New Haven, Greenwich

Teleport Communications Group - NY
Carrier

Coverage Area
Cities: Greenwich

Choice One Communications
Carrier

Coverage Area
Counties: , New Haven
Cities: Milford, Huntington, Bridgeport, Naugatuck, Branford, Cheshire, Stamford, Guilford, Wallingford, Madison, Waterbury, Meriden, New Haven, Derby

Level 3 Communications
Carrier

Coverage Area
Counties: , New Haven
Cities: Greenwich, New Haven, Redding, Stamford, Waterbury, Guilford, Bridgeport, Trumbull, Wolcott, Danbury, Fairfield, Norwalk

Metro PCS
Carrier

Coverage Area
Counties: , New Haven
Cities: Bridgeport, Meriden, New Haven, Waterbury

American Messaging (am)
Carrier

Coverage Area
Counties: New Haven,
Cities: New Haven, Waterbury

Broadwing Communications
Carrier

Coverage Area
Counties: New Haven,
Cities: New Haven, Stamford, Wolcott

Paetec Communications
Carrier

Coverage Area
Counties: Litchfield, , Fairfield, New Haven
Cities: Woodbury, Huntington, Waterbury, Meriden, Darien, Trumbull, Milford, Cheshire, Stamford, Fairfield, New Haven, Wallingford, Bridgeport, Danbury

AT&T Local
Carrier

Coverage Area
Counties: , New Haven, Fairfield
Cities: Redding, Danbury, New Haven, Wilton, Greenwich, Stamford, Westport, Meriden, Bridgeport, Waterbury, Norwalk, Darien

Paetec Communications - NY
Carrier

Coverage Area
Cities: Greenwich

Mcimetro Access Transmission Services LLC
Carrier

Coverage Area
Cities: Meriden

Cox Connecticut Telecom
Carrier

Coverage Area
Cities: Cheshire, Meriden, Waterbury

Global Crossing Local Services-ct
Carrier

Coverage Area
Counties: , Fairfield, New Haven
Cities: Stamford, Derby, Bridgeport, Danbury, Branford, Greenwich, Darien, Fairfield, Huntington, Milford, Naugatuck, Cheshire, Wallingford, Trumbull, Seymour, Guilford, New Haven, Madison, Meriden

Ctc Communications Corp.
Carrier

Coverage Area
Counties: , New Haven
Cities: Stamford, New Haven, Waterbury

Global Naps
Carrier

Coverage Area
Counties: , New Haven
Cities: Stamford, New Haven

Peerless Network Of Connecticut
Carrier

Coverage Area
Cities: Greenwich, Bridgeport, Waterbury

Sbc Internet Services
Carrier

Coverage Area
Counties: New Haven
Cities: New Haven

The 203 area code is located in New Haven, Connecticut including Darien, Guilford and was originally put into service on February 4th 1994. Find whose number this is.

Recently Reported Numbers

(203) 533-0523Dangerous

They left a message saying they added me to their do not call list

(203) 881-6815Dangerous

Called from a local # (520-789-9019) & left message on our landline voicemail. A transcription of the recorded message said... "hours(?) and within 24 hours you will see a charge from V-Tech solutions if you want to cancel the subscription and want a refund then please call on this number 1-203-881-6815. Cancellation should be done within the 48 hours upon receiving this confirmation call. Thank y

(203) 828-0249Dangerous

Same experience as all others. Robotic voice. Claims $399 charge within 48 hours if you don’t call back. Pretends it’s a “renewal” charge for some kind of virus protection which we don’t have. The number given to call back is 203-828-0249 but that’s NOT the number that was on my caller ID. That one was a local number.

(203) 441-1860Dangerous

Same as above. will be charged $399 unless I call 203-441-1860 within 24 hours.

(203) 441-1860Unknown

Rec 'd the same message. Did not call them. The garbled message with words cut off is a sure sign it is a scam. Said name was Jeff Morgan

(203) 497-3160Unknown

Got a phone call from this number. No voice message left.

(203) 587-8109Unknown

Left a message and said call back immediately and press 1 for technical but did not say who it was.

(203) 813-5905Unknown

Received a call this morning.

(203) 490-4891Dangerous

Grandma scam call

(203) 408-2051Dangerous

Called me to say I had an impending case against me. Even mentioned some place I had never been to before, but could not give me any relevant information on the case against me. He quickly hung up after he saw that I was not buying this bulls***. Total scam.

Recently Searched Numbers

No additional information reported for these searched numbers. Received a call from any phone number listed below? Please consider helping the community by reporting your experience.

203-552-2593
Report
Verizon New York
203-649-5466
Report
Paetec Communications
203-949-4232
Report
Southern New England Telephone Co.
203-994-2979
Report
Sprint Spectrum
203-422-2017
Report
Verizon New York
203-543-2254
Report
Omnipoint Communications
203-377-4110
Report
Southern New England Telephone Co.
203-821-1817
Report
Southern New England Telephone Co.
203-574-8315
Report
Southern New England Telephone Co.
203-990-9126
Report
Brooks Fiber Communications Of Connecticut Inc-ct
203-192-4894
Report
UNKNOWN
203-981-8973
Report
Sprint Spectrum
203-280-1223
Report
Brooks Fiber Communications Of Connecticut Inc-ct
203-700-2071
Report
UNKNOWN
203-127-9442
Report
UNKNOWN
203-834-4593
Report
Southern New England Telephone Co.
203-114-5443
Report
UNKNOWN
203-571-7946
Report
AT&T Local
203-325-7717
Report
Southern New England Telephone Co.

Most searched numbers

Cell
All TimeThis Month
203-697-1028First seen 2015-04-02203-744-9038First seen 2019-06-11
203-433-5892First seen 2019-05-05203-309-9733First seen 2018-08-05
203-585-7393First seen 2020-05-07203-517-9047First seen 2012-03-31
203-968-2712First seen 2019-12-03203-812-3053First seen 2013-10-24
203-913-6804First seen 2016-10-17203-787-3250First seen 2016-04-01
Landline
All TimeThis Month
203-286-9201First seen 2012-09-24203-951-1814First seen 2018-08-20
203-686-4029First seen 2016-10-28203-295-8284First seen 2012-02-28
203-306-5498First seen 2017-11-20203-484-5688First seen 2012-03-12
203-250-5972First seen 2011-12-14203-131-1736First seen 2019-10-29
203-433-3400First seen 2018-09-07203-830-7719First seen 2019-01-12

Cities With coverage

CITY LIST
Ansonia
Branford
Bridgeport
Cheshire
Danbury
Darien
Derby
Fairfield
Greenwich
Guilford
Huntington
Madison
Meriden
Milford
Naugatuck
New Canaan
New Haven
Newtown
Northford
Norwalk
Old Greenwich
Redding
Ridgefield
Seymour
Southbury
Stamford
Trumbull
Wallingford
Waterbury
Westport
Wilton
Wolcott
Woodbury