National Phone Number Registry NPNR

Area Code 203 Location

Area code 203 is currently assigned for use in Connecticut since Jan 01, 1947. View all phone prefixes used in area code 203 or other area codes in Connecticut.

(203)
Enter 7-digit phone number for area code 203 or the complete 10-digit phone number

Phone Prefixes for Area Code 203

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Area code Location Company / Service Provider
203-200 NEW HAVEN, CT BANDWIDTH.COM CLEC, LLC - CT
203-201 NEW HAVEN, CT USA MOBILITY WIRELESS, INC.
203-202 DARIEN, CT CABLEVISION LIGHTPATH, INC. - CT
203-204 GUILFORD, CT TELEPORT COMMUNICATIONS AMERICA, LLC - CT
203-205 DANBURY, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203-206 WATERBURY, CT NEW CINGULAR WIRELESS PCS, LLC - DC
203-207 DANBURY, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203-208 BRANFORD, CT COMCAST PHONE OF CONNECTICUT, INC. - CT
203-209 BRIDGEPORT, CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-210 WILTON, CT CABLEVISION LIGHTPATH, INC. - CT
203-212 BRIDGEPORT, CT NEW CINGULAR WIRELESS PCS, LLC - DC
203-213 MERIDEN, CT NEW CINGULAR WIRELESS PCS, LLC - DC
203-214 NEW HAVEN, CT NEW CINGULAR WIRELESS PCS, LLC - DC
203-215 NEW HAVEN, CT NEW CINGULAR WIRELESS PCS, LLC - DC
203-216 WESTPORT, CT NEW CINGULAR WIRELESS PCS, LLC - DC
203-217 WATERBURY, CT NEW CINGULAR WIRELESS PCS, LLC - DC
203-218 BRIDGEPORT, CT NEW CINGULAR WIRELESS PCS, LLC - DC
203-219 STAMFORD, CT NEW CINGULAR WIRELESS PCS, LLC - DC
203-220 TRUMBULL, CT CABLEVISION LIGHTPATH, INC. - CT
203-221 WESTPORT, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203-222 WESTPORT, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203-223 STAMFORD, CT SPRINT SPECTRUM L.P.
203-224 BRIDGEPORT, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203-225 HUNTINGTON, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203-226 WESTPORT, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203-227 WESTPORT, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203-228 WATERBURY, CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-229 NORWALK, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203-230 NEW HAVEN, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203-231 Ansonia / Derby, CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-232 WATERBURY, CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-233 WATERBURY, CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-234 NEW HAVEN, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203-235 MERIDEN, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203-236 WATERBURY, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203-237 MERIDEN, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203-238 MERIDEN, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203-239 NEW HAVEN, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203-240 DANBURY, CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-241 DANBURY, CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-242 HUNTINGTON, CT CABLEVISION LIGHTPATH, INC. - CT
203-243 BRIDGEPORT, CT OMNIPOINT COMMUNICATIONS, INC. - CT
203-244 RIDGEFIELD, CT CABLEVISION LIGHTPATH, INC. - CT
203-245 MADISON, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203-246 NORWALK, CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-247 NORWALK, CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-248 NEW HAVEN, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203-249 STAMFORD, CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-250 CHESHIRE, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203-251 STAMFORD, CT SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
203 Area Code Information
Type of code: General Purpose Code
Location: CT - US
Time zone: E
Assigned for use: Yes
Code in service: Yes
Service date: January 01, 1947
In jeopardy: No
Relief in progress: No
NPA Relief status:
Code assignable: Yes
Geographic or
non-geographic:
G
Reserved for future use: No
Planning letter(s): 388 255 217 138
Overlay code: Yes
Overlay complex: 203/475
Dialing plan Standard Permissive
Home local calls: 10D 1+10D
Foreign local calls: 10D 1+10D
Home toll calls: 1+10D NA
Foreign toll calls: 1+10D -

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