Telephone Area 203. Page 3.

Prefix: +1203

This prefix is distributed within the state Connecticut

The largest city in the region is New Haven

Time Zone: Eastern

Winter time: UTC-5

Summer time: UTC-4

Below on the map, there is indicated the largest city in the telephone area +1-203-...-.... Connecticut New Haven.

If you notice any errors of any community’s location on the map, please report it via the feedback form.

Phone numbers +1-203-YYY-YYYY

Other pages: 12345678910

Company	District	Major City	Prefix
New Cingular Wireless PCS - DC	New Haven	New Haven, CT	+1-203444-SSSS
Southern New England Telephone Co.	Fairfield	Trumbull, CT	+1-203445-SSSS
Teleport Communications Group - New York	New Haven	Derby, CT	+1-203446-SSSS
Teleport Communications Group - New York	Fairfield	Huntington, CT	+1-203447-SSSS
Brooks Fiber Communications Of Connecticut Inc-ct	Fairfield	Danbury, CT	+1-203448-SSSS
Sprint Spectrum L.p.	Fairfield	Bridgeport, CT	+1-203449-SSSS
Cellco Partnership DBA Verizon Wireless		Bridgeport, CT	+1-203450-SSSS
New Cingular Wireless PCS - DC	Fairfield	Westport, CT	+1-203451-SSSS
Southern New England Telephone Co.	Fairfield	Trumbull, CT	+1-203452-SSSS
Southern New England Telephone Co.	New Haven	Guilford, CT	+1-203453-SSSS
Southern New England Telephone Co.	Fairfield	Westport, CT	+1-203454-SSSS
Brooks Fiber Communications Of Connecticut Inc-ct	Fairfield	Bridgeport, CT	+1-203455-SSSS
Usa Mobility Wireless	New Haven	Meriden, CT	+1-203456-SSSS
Southern New England Telephone Co.	New Haven	Guilford, CT	+1-203457-SSSS
Southern New England Telephone Co.	New Haven	Guilford, CT	+1-203458-SSSS
Southern New England Telephone Co.	Fairfield	Trumbull, CT	+1-203459-SSSS
AT&T Local	Fairfield	Danbury, CT	+1-203460-SSSS
Southern New England Telephone Co.	Fairfield	Stamford, CT	+1-203461-SSSS
Southern New England Telephone Co.	Fairfield	Stamford, CT	+1-203462-SSSS
Teleport Communications Group - New York	New Haven	Seymour, CT	+1-203463-SSSS
Cellco Partnership DBA Verizon Wireless	New Haven	New Haven, CT	+1-203464-SSSS
Southern New England Telephone Co.	New Haven	Waterbury, CT	+1-203465-SSSS
Southern New England Telephone Co.	New Haven	New Haven, CT	+1-203466-SSSS
Southern New England Telephone Co.	New Haven	New Haven, CT	+1-203467-SSSS
Southern New England Telephone Co.	New Haven	New Haven, CT	+1-203468-SSSS
Southern New England Telephone Co.	New Haven	New Haven, CT	+1-203469-SSSS
Cellco Partnership DBA Verizon Wireless	Fairfield	Danbury, CT	+1-203470-SSSS
Usa Mobility Wireless	New Haven	New Haven, CT	+1-203477-SSSS
Southern New England Telephone Co.	New Haven	New Haven, CT	+1-203479-SSSS
Brooks Fiber Communications Of Connecticut Inc-ct	Fairfield	Fairfield, CT	+1-203480-SSSS
Southern New England Telephone Co.	New Haven	Branford, CT	+1-203481-SSSS
New Cingular Wireless PCS - DC	Fairfield	Danbury, CT	+1-203482-SSSS
Southern New England Telephone Co.	New Haven	Branford, CT	+1-203483-SSSS
Southern New England Telephone Co.	New Haven	Northford, CT	+1-203484-SSSS
Cablevision Lightpath	Fairfield	Greenwich, CT	+1-203485-SSSS
Southern New England Telephone Co.	New Haven	Southbury, CT	+1-203486-SSSS
Global Crossing Local Services-ct	Fairfield	Stamford, CT	+1-203487-SSSS
Southern New England Telephone Co.	New Haven	Branford, CT	+1-203488-SSSS
Cablevision Lightpath	Fairfield	Norwalk, CT	+1-203489-SSSS
Teleport Communications Group - New York	New Haven	Naugatuck, CT	+1-203490-SSSS
Bandwidth.com Clec	New Haven	Newtown, CT	+1-203491-SSSS
Southern New England Telephone Co.	New Haven	New Haven, CT	+1-203492-SSSS
Level 3 Communications	Fairfield	Redding, CT	+1-203493-SSSS
Cellco Partnership DBA Verizon Wireless	New Haven	New Haven, CT	+1-203494-SSSS
Southern New England Telephone Co.	New Haven	New Haven, CT	+1-203495-SSSS
Nextel Communications	Fairfield	Greenwich, CT	+1-203496-SSSS
Southern New England Telephone Co.	New Haven	New Haven, CT	+1-203497-SSSS
Southern New England Telephone Co.	New Haven	New Haven, CT	+1-203498-SSSS
Southern New England Telephone Co.	New Haven	New Haven, CT	+1-203499-SSSS
New Cingular Wireless PCS - DC	New Haven	New Haven, CT	+1-203500-SSSS
Cellco Partnership DBA Verizon Wireless	New Haven	Danbury, CT	+1-203501-SSSS
Southern New England Telephone Co.	Fairfield	Bridgeport, CT	+1-203502-SSSS
Southern New England Telephone Co.	New Haven	New Haven, CT	+1-203503-SSSS
Ctc Communications Corp.	Fairfield	Stamford, CT	+1-203504-SSSS
Cellco Partnership DBA Verizon Wireless	Fairfield	Norwalk, CT	+1-203505-SSSS
New Cingular Wireless PCS - DC	New Haven	New Haven, CT	+1-203506-SSSS
Sprint Spectrum L.p.	New Haven	New Haven, CT	+1-203507-SSSS
Ctc Communications Corp.	New Haven	New Haven, CT	+1-203508-SSSS
Nextel Communications	New Haven	Waterbury, CT	+1-203509-SSSS
Sprint Spectrum L.p.	New Haven	Waterbury, CT	+1-203510-SSSS
Omnipoint Communications	Fairfield	Danbury, CT	+1-203512-SSSS
AT&T Local	New Haven	New Haven, CT	+1-203513-SSSS
Teleport Communications Group - New York	New Haven	Meriden, CT	+1-203514-SSSS
Nextel Communications	Fairfield	Norwalk, CT	+1-203515-SSSS
Global Crossing Local Services-ct	New Haven	Derby, CT	+1-203516-SSSS
Level 3 Communications	Fairfield	Stamford, CT	+1-203517-SSSS
New Cingular Wireless PCS - DC	New Haven	Waterbury, CT	+1-203518-SSSS
Sprint Spectrum L.p.	New Haven	Waterbury, CT	+1-203519-SSSS
Cellco Partnership DBA Verizon Wireless	Fairfield	Bridgeport, CT	+1-203520-SSSS
Cellco Partnership DBA Verizon Wireless	Fairfield	Bridgeport, CT	+1-203521-SSSS
New Cingular Wireless PCS - DC	Fairfield	Bridgeport, CT	+1-203522-SSSS
Teleport Communications Group - New York	Fairfield	Norwalk, CT	+1-203523-SSSS
New Cingular Wireless PCS - DC	Fairfield	Stamford, CT	+1-203524-SSSS
New Cingular Wireless PCS - DC	New Haven	Waterbury, CT	+1-203525-SSSS
Sprint Spectrum L.p.	Fairfield	Bridgeport, CT	+1-203526-SSSS
Southern New England Telephone Co.	New Haven	Waterbury, CT	+1-203527-SSSS
Level 3 Communications	New Haven	Waterbury, CT	+1-203528-SSSS
AT&T Local	Fairfield	Wilton, CT	+1-203529-SSSS
Cellco Partnership DBA Verizon Wireless	New Haven	New Haven, CT	+1-203530-SSSS
Verizon New York	Fairfield	Greenwich, CT	+1-203531-SSSS

If you have not found the required prefix in the table, you can use the search of a full telephone number at the top of the site or the advanced search.

Content displayed at the site is taken from public sources. All information on this site is intended for informational purpose and is not an official publication.