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(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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