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 |
|---|---|---|---|---|
| 203-891 | NEW HAVEN | 9147 | — | Yes |
| 203-894 | RIDGEFIELD | 9147 | — | Yes |
| 203-899 | NORWALK | 9147 | — | — |
| 203-921 | STAMFORD | 9147 | — | Yes |
| 203-922 | HUNTINGTON | 9147 | — | Yes |
| 203-924 | HUNTINGTON | 9147 | — | — |
| 203-925 | HUNTINGTON | 9147 | — | — |
| 203-926 | HUNTINGTON | 9147 | — | — |
| 203-928 | NEW HAVEN | 9147 | — | Yes |
| 203-929 | HUNTINGTON | 9147 | — | — |
| 203-931 | NEW HAVEN | 9147 | — | Yes |
| 203-932 | NEW HAVEN | 9147 | — | — |
| 203-933 | NEW HAVEN | 9147 | — | — |
| 203-934 | NEW HAVEN | 9147 | — | — |
| 203-936 | NEW HAVEN | 9147 | 2008-09-12 | Yes |
| 203-937 | NEW HAVEN | 9147 | — | Yes |
| 203-938 | REDDING | 9147 | — | — |
| 203-940 | STAMFORD | 9147 | — | Yes |
| 203-944 | HUNTINGTON | 9147 | — | — |
| 203-945 | NORWALK | 9147 | — | Yes |
| 203-946 | NEW HAVEN | 9147 | — | — |
| 203-949 | WALLINGFD | 9147 | — | — |
| 203-961 | STAMFORD | 9147 | — | Yes |
| 203-962 | STAMFORD | 9147 | — | Yes |
| 203-963 | NORWALK | 9147 | — | Yes |
| 203-964 | STAMFORD | 9147 | — | Yes |
| 203-965 | STAMFORD | 9147 | — | Yes |
| 203-966 | NEW CANAAN | 9147 | — | — |
| 203-967 | STAMFORD | 9147 | — | — |
| 203-968 | STAMFORD | 9147 | — | Yes |
| 203-969 | STAMFORD | 9147 | — | Yes |
| 203-972 | NEW CANAAN | 9147 | — | — |
| 203-973 | STAMFORD | 9147 | — | Yes |
| 203-975 | STAMFORD | 9147 | — | — |
| 203-977 | STAMFORD | 9147 | — | — |
| 203-978 | STAMFORD | 9147 | — | Yes |
| 203-985 | NEW HAVEN | 9147 | — | Yes |
| 203-991 | NORWALK | 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.