SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
338 prefixes in 203 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 203-694 | MERIDEN | 9147 | — | Yes |
| 203-695 | WATERBURY | 9147 | — | Yes |
| 203-696 | BRIDGEPORT | 9147 | — | — |
| 203-697 | WALLINGFD | 9147 | — | Yes |
| 203-698 | OLDGRNWICH | 9147 | — | Yes |
| 203-699 | CHESHIRE | 9147 | — | Yes |
| 203-703 | STAMFORD | 9147 | — | Yes |
| 203-708 | STAMFORD | 9147 | — | Yes |
| 203-709 | WATERBURY | 9147 | — | Yes |
| 203-720 | NAUGATUCK | 9147 | — | Yes |
| 203-723 | NAUGATUCK | 9147 | — | Yes |
| 203-728 | STAMFORD | 9147 | 2006-11-22 | Yes |
| 203-729 | NAUGATUCK | 9147 | — | — |
| 203-730 | DANBURY | 9147 | — | — |
| 203-731 | DANBURY | 9147 | — | Yes |
| 203-732 | ANSONIDRBY | 9147 | — | — |
| 203-734 | ANSONIDRBY | 9147 | — | — |
| 203-735 | ANSONIDRBY | 9147 | — | — |
| 203-736 | ANSONIDRBY | 9147 | — | Yes |
| 203-737 | NEW HAVEN | 9147 | — | Yes |
| 203-739 | DANBURY | 9147 | — | Yes |
| 203-740 | DANBURY | 9147 | — | — |
| 203-741 | WALLINGFD | 9147 | — | Yes |
| 203-743 | DANBURY | 9147 | — | — |
| 203-744 | DANBURY | 9147 | — | Yes |
| 203-745 | NEW HAVEN | 9147 | — | Yes |
| 203-746 | DANBURY | 9147 | — | — |
| 203-748 | DANBURY | 9147 | — | — |
| 203-749 | DANBURY | 9147 | — | — |
| 203-750 | NORWALK | 9147 | — | — |
| 203-751 | ANSONIDRBY | 9147 | — | Yes |
| 203-752 | NEW HAVEN | 9147 | — | Yes |
| 203-753 | WATERBURY | 9147 | — | — |
| 203-754 | WATERBURY | 9147 | — | — |
| 203-755 | WATERBURY | 9147 | — | — |
| 203-756 | WATERBURY | 9147 | — | — |
| 203-757 | WATERBURY | 9147 | — | — |
| 203-758 | WATERBURY | 9147 | — | — |
| 203-759 | WATERBURY | 9147 | — | Yes |
| 203-761 | WILTON | 9147 | — | — |
| 203-762 | WILTON | 9147 | — | Yes |
| 203-764 | NEW HAVEN | 9147 | — | Yes |
| 203-765 | NEW HAVEN | 9147 | — | — |
| 203-771 | NEW HAVEN | 9147 | — | — |
| 203-772 | NEW HAVEN | 9147 | — | Yes |
| 203-773 | NEW HAVEN | 9147 | — | — |
| 203-775 | DANBURY | 9147 | — | — |
| 203-776 | NEW HAVEN | 9147 | — | — |
| 203-777 | NEW HAVEN | 9147 | — | — |
| 203-778 | DANBURY | 9147 | — | — |
| 203-781 | NEW HAVEN | 9147 | — | Yes |
| 203-782 | NEW HAVEN | 9147 | — | — |
| 203-783 | MILFORD | 9147 | — | — |
| 203-784 | NEW HAVEN | 9147 | — | — |
| 203-785 | NEW HAVEN | 9147 | — | — |
| 203-786 | NEW HAVEN | 9147 | — | — |
| 203-787 | NEW HAVEN | 9147 | — | Yes |
| 203-789 | NEW HAVEN | 9147 | — | — |
| 203-790 | DANBURY | 9147 | — | — |
| 203-791 | DANBURY | 9147 | — | — |
| 203-792 | DANBURY | 9147 | — | — |
| 203-794 | DANBURY | 9147 | — | Yes |
| 203-795 | NEW HAVEN | 9147 | — | — |
| 203-796 | DANBURY | 9147 | — | — |
| 203-797 | DANBURY | 9147 | — | — |
| 203-798 | DANBURY | 9147 | — | — |
| 203-799 | NEW HAVEN | 9147 | — | — |
| 203-801 | NEW CANAAN | 9147 | — | Yes |
| 203-812 | NEW HAVEN | 9147 | — | Yes |
| 203-821 | NEW HAVEN | 9147 | — | Yes |
| 203-825 | DANBURY | 9147 | — | — |
| 203-826 | DANBURY | 9147 | — | Yes |
| 203-830 | DANBURY | 9147 | — | Yes |
| 203-831 | NORWALK | 9147 | — | — |
| 203-834 | WILTON | 9147 | — | — |
| 203-837 | DANBURY | 9147 | — | Yes |
| 203-838 | NORWALK | 9147 | — | — |
| 203-840 | NORWALK | 9147 | — | — |
| 203-845 | NORWALK | 9147 | — | — |
| 203-846 | NORWALK | 9147 | — | — |
| 203-847 | NORWALK | 9147 | — | — |
| 203-849 | NORWALK | 9147 | — | — |
| 203-851 | NORWALK | 9147 | — | Yes |
| 203-852 | NORWALK | 9147 | — | — |
| 203-853 | NORWALK | 9147 | — | — |
| 203-854 | NORWALK | 9147 | — | — |
| 203-855 | NORWALK | 9147 | — | — |
| 203-857 | NORWALK | 9147 | — | Yes |
| 203-865 | NEW HAVEN | 9147 | — | — |
| 203-866 | NORWALK | 9147 | — | — |
| 203-867 | NEW HAVEN | 9147 | — | — |
| 203-874 | MILFORD | 9147 | — | — |
| 203-876 | MILFORD | 9147 | — | — |
| 203-877 | MILFORD | 9147 | — | — |
| 203-878 | MILFORD | 9147 | — | — |
| 203-879 | WOLCOTT | 9147 | — | — |
| 203-881 | SEYMOUR | 9147 | — | Yes |
| 203-882 | MILFORD | 9147 | — | — |
| 203-888 | SEYMOUR | 9147 | — | — |
| 203-890 | STAMFORD | 9147 | 2001-07-27 | Yes |
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.