All assignees
799 prefixes in 860 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 860-300 | NORWICH | 6388 | 2016-01-28 | Yes |
| 860-301 | MIDDLETOWN | 4036 | — | — |
| 860-302 | SOUTHINGTN | 4036 | — | — |
| 860-303 | NORWICH | 4036 | — | — |
| 860-304 | OLD SAYBRK | 4036 | — | Yes |
| 860-305 | HARTFORD | 6388 | — | — |
| 860-306 | HARTFORD | 6388 | — | — |
| 860-307 | HARWINTON | 4036 | — | — |
| 860-308 | HARTFORD | 9147 | — | Yes |
| 860-309 | HARWINTON | 4036 | — | — |
| 860-310 | HARTFORD | 318J | 2012-04-23 | Yes |
| 860-311 | XXXXXXXXXX | MULT | — | — |
| 860-312 | NORWICH | 9147 | — | — |
| 860-313 | HARTFORD | 9147 | — | Yes |
| 860-314 | BRISTOL | 9147 | — | — |
| 860-315 | PUTNAM | 7229 | — | Yes |
| 860-316 | MIDDLETOWN | 7229 | — | Yes |
| 860-317 | PLAINFIELD | 7229 | — | Yes |
| 860-318 | CORNWALL | 7229 | — | Yes |
| 860-319 | NORWICH | 7229 | — | Yes |
| 860-320 | HARTFORD | 9748 | — | — |
| 860-321 | FARMINGTON | 7229 | — | Yes |
| 860-322 | DEEP RIVER | 7229 | — | Yes |
| 860-323 | SIMSBURY | 7229 | — | Yes |
| 860-324 | HARTFORD | 6388 | 2002-10-22 | Yes |
| 860-325 | SIMSBURY | 7229 | — | Yes |
| 860-326 | NEW LONDON | 7143 | — | Yes |
| 860-327 | MANCHESTER | 7229 | — | Yes |
| 860-328 | GLASTONBY | 6624 | 2001-05-01 | Yes |
| 860-329 | SOUTHINGTN | 7229 | — | Yes |
| 860-330 | HARTFORD | 6630 | — | — |
| 860-331 | HARTFORD | 7229 | — | Yes |
| 860-332 | HARTFORD | 6630 | — | — |
| 860-333 | NEW LONDON | 9147 | — | Yes |
| 860-334 | NORWICH | 6388 | — | — |
| 860-335 | HARTFORD | 6388 | — | Yes |
| 860-336 | WILLIMNTIC | 7143 | — | Yes |
| 860-337 | COLUMBIA | 7229 | — | Yes |
| 860-338 | GLASTONBY | 6388 | — | Yes |
| 860-339 | OLD SAYBRK | 7229 | — | Yes |
| 860-340 | HARTFORD | 9748 | — | — |
| 860-341 | STORRS | 7229 | — | Yes |
| 860-342 | MIDDLETOWN | 9147 | — | Yes |
| 860-343 | MIDDLETOWN | 9147 | — | — |
| 860-344 | MIDDLETOWN | 9147 | — | — |
| 860-345 | HADDAM | 9147 | — | Yes |
| 860-346 | MIDDLETOWN | 9147 | — | — |
| 860-347 | MIDDLETOWN | 9147 | — | — |
| 860-348 | NEWBRITAIN | 9147 | — | Yes |
| 860-349 | MIDDLETOWN | 9147 | — | Yes |
| 860-350 | NEWMILFORD | 9147 | — | — |
| 860-351 | PLAINVILLE | 7229 | — | Yes |
| 860-352 | CANTON | 7229 | — | Yes |
| 860-353 | HARTFORD | 9147 | 2007-07-02 | Yes |
| 860-354 | NEWMILFORD | 9147 | — | — |
| 860-355 | NEWMILFORD | 9147 | — | — |
| 860-356 | NEWBRITAIN | 7229 | — | Yes |
| 860-357 | NEWBRITAIN | 7229 | — | Yes |
| 860-358 | MIDDLETOWN | 9147 | — | Yes |
| 860-359 | COLUMBIA | 7229 | — | Yes |
| 860-360 | HARTFORD | 6630 | — | — |
| 860-361 | LITCHFIELD | 4950 | — | Yes |
| 860-362 | CANAAN | 9147 | — | Yes |
| 860-363 | HARTFORD | 6630 | — | — |
| 860-364 | SHARON | 9147 | — | Yes |
| 860-365 | E HAMPTON | 9147 | — | Yes |
| 860-366 | HARTFORD | 6630 | — | — |
| 860-367 | NORWICH | 9147 | — | Yes |
| 860-368 | GLASTONBY | 9147 | — | Yes |
| 860-369 | HARTFORD | 6630 | — | — |
| 860-370 | WINDSORLKS | 318J | — | Yes |
| 860-371 | HARTFORD | 9147 | — | Yes |
| 860-372 | HARTFORD | 9147 | — | Yes |
| 860-373 | NORWICH | 6388 | — | Yes |
| 860-374 | DEEP RIVER | 7229 | — | Yes |
| 860-375 | ROCKVILLE | 7229 | — | Yes |
| 860-376 | JEWETTCITY | 9147 | — | — |
| 860-377 | WILLIMNTIC | 6388 | — | — |
| 860-378 | SOUTHINGTN | 9147 | — | Yes |
| 860-379 | WINSTED | 9147 | — | — |
| 860-380 | HARTFORD | 7143 | — | Yes |
| 860-381 | LEDYARD | 7143 | — | Yes |
| 860-382 | PUTNAM | 4036 | — | Yes |
| 860-383 | NORWICH | 7143 | — | Yes |
| 860-384 | SOUTHINGTN | 6388 | — | Yes |
| 860-385 | SOUTHINGTN | 639C | — | Yes |
| 860-386 | WINDSORLKS | 9147 | — | Yes |
| 860-387 | TORRINGTON | 6388 | — | Yes |
| 860-388 | OLD SAYBRK | 9147 | — | Yes |
| 860-389 | NEW LONDON | 4036 | — | Yes |
| 860-390 | LYME | 539F | 2013-04-11 | Yes |
| 860-391 | OLD SAYBRK | 9147 | — | Yes |
| 860-392 | SIMSBURY | 7143 | — | Yes |
| 860-393 | LITCHFIELD | 7143 | — | Yes |
| 860-394 | ENFIELD | 7143 | — | Yes |
| 860-395 | OLD SAYBRK | 9147 | — | Yes |
| 860-396 | MYSTIC | 9147 | — | — |
| 860-397 | SHARON | 7229 | — | Yes |
| 860-398 | MIDDLETOWN | 4800 | — | Yes |
| 860-399 | OLD SAYBRK | 9147 | — | — |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.