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Area Codes > 203 > Central Office Codes

Exchange Rate Center State Operating Company
203-302 GREENWICH CT TELEPORT COMMUNICATIONS GROUP - NY
203-303 WALLINGFD CT TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT
203-304 NEWTOWN CT TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT
203-305 ANSONIDRBY CT NEW CINGULAR WIRELESS PCS, LLC - MA
203-306 MILFORD CT CHOICE ONE COMMUNICATIONS, INC. - CT
203-307 FAIRFIELD CT BROOKS FIBER COMMUNICATIONS - CONNECTICUT
203-309 DARIEN CT SPRINT SPECTRUM L.P.
203-310 NEW CANAAN CT BROOKS FIBER COMMUNICATIONS - CONNECTICUT
203-311 CT
203-312 DANBURY CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-313 DANBURY CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-314 NEW HAVEN CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-315 BRANFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-316 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-317 MERIDEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-318 MADISON CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-319 FAIRFIELD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-320 DARIEN CT BROOKS FIBER COMMUNICATIONS - CONNECTICUT
203-321 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-322 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-323 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-324 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-325 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-326 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-327 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-328 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-329 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-330 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-331 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-332 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-333 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-334 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-335 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-336 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-337 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-338 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-339 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-340 GREENWICH CT CABLEVISION LIGHTPATH, INC. - CT
203-341 WESTPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-342 BRIDGEPORT CT ARCH WIRELESS HOLDINGS, INC.
203-343 DANBURY CT ARCH WIRELESS HOLDINGS, INC.
203-344 OLDGRNWICH CT CABLEVISION LIGHTPATH, INC. - CT
203-345 BRIDGEPORT CT CABLEVISION LIGHTPATH, INC. - CT
203-346 WATERBURY CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-347 BYRAM CT DSLNET, COMMUNICATIONS, LLC NY
203-348 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-349 WESTPORT CT TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT
203-350 MADISON CT TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT
203-351 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-352 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-353 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-354 NORWALK CT CABLEVISION LIGHTPATH, INC. - CT
203-355 STAMFORD CT CABLEVISION LIGHTPATH, INC. - CT
203-356 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-357 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-358 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-359 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-362 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-363 STAMFORD CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-364 NEWTOWN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-365 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-366 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-367 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-368 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-369 OLDGRNWICH CT BROOKS FIBER COMMUNICATIONS - CONNECTICUT
203-370 NEW HAVEN CT AMERICAN MESSAGING (AM), INC.
203-371 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-372 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-373 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-374 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-375 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-376 NEW HAVEN CT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT
203-377 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-378 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-379 MERIDEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-380 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-381 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-382 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-383 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-384 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-385 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-386 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-387 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-388 STAMFORD CT BROOKS FIBER COMMUNICATIONS - CONNECTICUT
203-389 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-390 NEW HAVEN CT ARCH WIRELESS HOLDINGS, INC.
203-391 STAMFORD CT BROOKS FIBER COMMUNICATIONS - CONNECTICUT
203-392 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-393 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-394 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-395 BRIDGEPORT CT NEXTEL COMMUNICATIONS, INC.
203-396 BRIDGEPORT CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-397 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-398 NORWALK CT ARCH WIRELESS HOLDINGS, INC.
203-399 STAMFORD CT BROOKS FIBER COMMUNICATIONS - CONNECTICUT
203-400 TRUMBULL CT NEW CINGULAR WIRELESS PCS, LLC - MA
203-401 NEW HAVEN CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-402 HUNTINGTON CT SOUTHERN NEW ENGLAND TELEPHONE CO.
203-403 RIDGEFIELD CT TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT
203-404 NEW HAVEN CT BROADWING COMMUNICATIONS, LLC - CT