All assignees
799 prefixes in 860 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 860-500 | HARTFORD | 6388 | 2016-06-21 | Yes |
| 860-501 | NEW LONDON | 4036 | 2002-11-04 | Yes |
| 860-502 | HARTFORD | 7421 | — | Yes |
| 860-503 | HARTFORD | 4036 | 2012-04-02 | Yes |
| 860-504 | HARTFORD | 6630 | — | — |
| 860-505 | NEWBRITAIN | 7143 | — | Yes |
| 860-506 | BRISTOL | 7143 | — | Yes |
| 860-507 | FARMINGTON | 7143 | — | Yes |
| 860-508 | HARTFORD | 6388 | — | — |
| 860-509 | HARTFORD | 7143 | — | Yes |
| 860-510 | OLD SAYBRK | 9147 | — | Yes |
| 860-511 | XXXXXXXXXX | MULT | — | — |
| 860-512 | MANCHESTER | 7143 | — | Yes |
| 860-513 | HARTFORD | 9147 | — | Yes |
| 860-514 | NEW LONDON | 6624 | — | — |
| 860-515 | NEWBRITAIN | 7143 | — | Yes |
| 860-516 | BRISTOL | 4800 | — | Yes |
| 860-517 | PLAINVILLE | 7143 | — | Yes |
| 860-518 | NEWBRITAIN | 6624 | — | — |
| 860-519 | HARTFORD | 318J | — | Yes |
| 860-520 | HARTFORD | 9147 | — | — |
| 860-521 | HARTFORD | 9147 | — | — |
| 860-522 | HARTFORD | 9147 | — | Yes |
| 860-523 | HARTFORD | 9147 | — | — |
| 860-524 | HARTFORD | 9147 | — | — |
| 860-525 | HARTFORD | 9147 | — | — |
| 860-526 | DEEP RIVER | 9147 | — | Yes |
| 860-527 | HARTFORD | 9147 | — | — |
| 860-528 | HARTFORD | 9147 | — | — |
| 860-529 | HARTFORD | 9147 | — | — |
| 860-530 | COLUMBIA | 318J | — | Yes |
| 860-531 | COLCHESTER | 7143 | — | Yes |
| 860-532 | DEEP RIVER | 7143 | — | Yes |
| 860-533 | MANCHESTER | 9147 | — | Yes |
| 860-534 | HARTFORD | 9147 | — | Yes |
| 860-535 | MYSTIC | 9147 | — | Yes |
| 860-536 | MYSTIC | 9147 | — | — |
| 860-537 | COLCHESTER | 9147 | — | — |
| 860-538 | NEWBRITAIN | 6624 | 2002-09-03 | Yes |
| 860-539 | HARTFORD | 6388 | — | — |
| 860-540 | BRISTOL | 829J | — | Yes |
| 860-541 | HARTFORD | 9147 | — | Yes |
| 860-542 | NORFOLK | 9147 | — | Yes |
| 860-543 | HARTFORD | 9147 | — | Yes |
| 860-544 | COVENTRY | 7229 | — | Yes |
| 860-545 | HARTFORD | 9147 | — | — |
| 860-546 | CANTERBURY | 9147 | — | Yes |
| 860-547 | HARTFORD | 9147 | — | — |
| 860-548 | HARTFORD | 9147 | — | Yes |
| 860-549 | HARTFORD | 9147 | — | Yes |
| 860-550 | HARTFORD | 9147 | — | Yes |
| 860-551 | XXXXXXXXXX | 9147 | — | — |
| 860-552 | CLINTON | 4800 | — | Yes |
| 860-553 | STORRS | 829J | — | Yes |
| 860-554 | HADDAM | 7229 | — | Yes |
| 860-555 | DIR ASST | MULT | — | — |
| 860-556 | CANTERBURY | 7143 | — | Yes |
| 860-557 | HARTFORD | 9147 | — | — |
| 860-558 | HARTFORD | 6388 | — | — |
| 860-559 | HARTFORD | 6388 | — | — |
| 860-560 | HARTFORD | 9147 | — | Yes |
| 860-561 | HARTFORD | 9147 | — | — |
| 860-562 | ENFIELD | 7143 | 2004-06-02 | Yes |
| 860-563 | HARTFORD | 9147 | — | — |
| 860-564 | PLAINFIELD | 9147 | — | — |
| 860-565 | HARTFORD | 9147 | — | — |
| 860-566 | HARTFORD | 9147 | — | Yes |
| 860-567 | LITCHFIELD | 9147 | — | — |
| 860-568 | HARTFORD | 9147 | — | — |
| 860-569 | HARTFORD | 9147 | — | Yes |
| 860-570 | HARTFORD | 9147 | — | — |
| 860-571 | HARTFORD | 9147 | — | Yes |
| 860-572 | MYSTIC | 9147 | — | Yes |
| 860-573 | HARTFORD | 6388 | — | — |
| 860-574 | NEW LONDON | 5562 | 2009-12-03 | Yes |
| 860-575 | OLD SAYBRK | 6388 | — | Yes |
| 860-576 | WILLIMNTIC | 6388 | 2008-04-14 | Yes |
| 860-577 | OLD SAYBRK | 7143 | — | Yes |
| 860-578 | HARTFORD | 6388 | 2008-10-23 | Yes |
| 860-579 | HADDAM | 7143 | — | Yes |
| 860-580 | WINDSOR | 9147 | 2006-11-22 | Yes |
| 860-581 | ESSEX | 7143 | — | Yes |
| 860-582 | BRISTOL | 9147 | — | — |
| 860-583 | BRISTOL | 9147 | — | — |
| 860-584 | BRISTOL | 9147 | — | — |
| 860-585 | BRISTOL | 9147 | — | — |
| 860-586 | HARTFORD | 9147 | — | — |
| 860-587 | HARTFORD | 6630 | — | — |
| 860-588 | HARTFORD | 9748 | — | — |
| 860-589 | BRISTOL | 9147 | — | — |
| 860-590 | WATERTOWN | 639C | — | Yes |
| 860-591 | JEWETTCITY | 4800 | — | Yes |
| 860-592 | KENT | 7143 | — | Yes |
| 860-593 | HARTFORD | 4036 | 2002-07-12 | — |
| 860-594 | HARTFORD | 9147 | — | Yes |
| 860-595 | HARTFORD | 9147 | — | Yes |
| 860-596 | LAKEVILLE | 7143 | — | Yes |
| 860-597 | HARTFORD | 4036 | 2002-07-17 | — |
| 860-598 | LYME | 7143 | — | Yes |
| 860-599 | PAWCATUCK | 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.