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) 749-2619Dangerous

They just called me looking for a person under my husbands first name and fathers last name. I told them there is no one by that name and asked what it was regarding and she refused to give me info (including where she was calling from) and asked if I was his wife. I told her how can i be his wife there is no one by that name. I continued to ask her who they were and she said so quickly that I cou

(203) 819-7928Dangerous

Pretends to be calling from Social Security. Says your identity has been stolen and to press 1 to be connected to SS to avoid having all your benefits discontinued.

(203) 484-8095Unknown

Number just called my work line. Lady on the other end sounded like she was chewing gum and bored. She wanted two people who no longer work with the company and then she hung up after I informed her of this.

(203) 945-1117Dangerous

Its been a while but just called again Nw blocked

(203) 481-4131Unknown

Got a call from this number. The caller did not leave any message.

(203) 872-6783Unknown

Went to machine and they hung up.

(203) 489-9512Unknown

Got dead air.

(203) 642-0543Dangerous

indian trash ... calls from a longer unknown number 353.203.642.0543

(203) 965-9716Unknown

does not leave a message

(203) 791-6264Unknown

Called my cell but left no message.

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.

203-731-7803
Report
Southern New England Telephone Co.
203-447-7988
Report
Teleport Communications America
203-298-7325
Report
Cablevision Lightpath
203-569-8295
Report
Cablevision Lightpath
203-272-8483
Report
Southern New England Telephone Co.
203-118-6789
Report
UNKNOWN
203-871-1514
Report
Teleport Communications America
203-915-8084
Report
Cellco Partnership DBA Verizon Wireless
203-463-3913
Report
Teleport Communications America
203-566-3222
Report
Brooks Fiber Communications Of Connecticut Inc-ct
203-240-4854
Report
Cellco Partnership DBA Verizon Wireless
203-457-7204
Report
Southern New England Telephone Co.
203-681-5741
Report
Verizon New York
203-653-3943
Report
Paetec Communications
203-858-2813
Report
Cellco Partnership DBA Verizon Wireless
203-291-7701
Report
Southern New England Telephone Co.
203-104-5407
Report
UNKNOWN
203-209-9988
Report
Cellco Partnership DBA Verizon Wireless
203-980-1184
Report
Cellco Partnership DBA Verizon Wireless

Most searched numbers

Cell
All TimeThis Month
203-524-7236First seen 2018-04-18203-509-2521First seen 2014-05-26
203-836-2478First seen 2016-05-31203-772-6491First seen 2015-06-28
203-516-6989First seen 2015-11-16203-753-3890First seen 2020-01-06
203-238-1875First seen 2016-08-05203-627-9379First seen 2013-04-10
203-581-8361First seen 2015-02-01203-175-6630First seen 2013-01-29
Landline
All TimeThis Month
203-452-4969First seen 2013-04-19203-438-5666First seen 2014-09-27
203-488-7013First seen 2013-02-12203-854-3419First seen 2015-11-12
203-864-8672First seen 2014-11-23203-336-1381First seen 2016-11-14
203-718-7579First seen 2010-02-05203-355-5309First seen 2012-12-27
203-900-4269First seen 2015-05-23203-522-1762First seen 2016-06-10

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