LEVEL 3 COMMUNICATIONS, LLC - CT
41 prefixes in 203 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 203-347 | BYRAM | 4800 | 2004-03-11 | Yes |
| 203-361 | NEW HAVEN | 4800 | 2010-12-16 | Yes |
| 203-404 | NEW HAVEN | 4800 | — | Yes |
| 203-487 | STAMFORD | 4800 | 2001-01-03 | Yes |
| 203-493 | GEORGETOWN | 4800 | — | Yes |
| 203-516 | ANSONIDRBY | 4800 | — | Yes |
| 203-517 | STAMFORD | 4800 | — | Yes |
| 203-528 | WATERBURY | 4800 | — | Yes |
| 203-533 | GUILFORD | 4800 | — | Yes |
| 203-548 | STAMFORD | 4800 | 2002-05-30 | Yes |
| 203-583 | BRIDGEPORT | 4800 | — | Yes |
| 203-590 | TRUMBULL | 4800 | 2011-03-18 | Yes |
| 203-599 | MERIDEN | 4800 | — | Yes |
| 203-604 | NORWALK | 4800 | 2001-03-14 | Yes |
| 203-612 | BRIDGEPORT | 4800 | — | Yes |
| 203-616 | DANBURY | 4800 | — | Yes |
| 203-633 | WOLCOTT | 4800 | — | Yes |
| 203-635 | WESTPORT | 4800 | — | Yes |
| 203-648 | DANBURY | 4800 | — | Yes |
| 203-666 | BRIDGEPORT | 4800 | 2013-09-26 | Yes |
| 203-669 | DARIEN | 4800 | — | Yes |
| 203-687 | NEW HAVEN | 4800 | — | Yes |
| 203-692 | FAIRFIELD | 4800 | — | Yes |
| 203-704 | WOLCOTT | 4800 | 2002-07-17 | Yes |
| 203-712 | HUNTINGTON | 4800 | — | Yes |
| 203-716 | NEW CANAAN | 4800 | — | Yes |
| 203-718 | CHESHIRE | 4800 | — | Yes |
| 203-763 | FAIRFIELD | 4800 | — | Yes |
| 203-793 | WALLINGFD | 4800 | 2001-03-23 | Yes |
| 203-816 | TRUMBULL | 4800 | 2001-03-14 | Yes |
| 203-828 | SEYMOUR | 4800 | — | Yes |
| 203-842 | NORWALK | 4800 | — | Yes |
| 203-883 | STAMFORD | 4800 | — | Yes |
| 203-889 | NEW HAVEN | 4800 | — | Yes |
| 203-903 | NEW HAVEN | 4800 | — | Yes |
| 203-916 | BRIDGEPORT | 4800 | 2001-01-30 | Yes |
| 203-930 | GREENWICH | 4800 | 2001-03-14 | Yes |
| 203-935 | MERIDEN | 4800 | — | Yes |
| 203-987 | GREENWICH | 4800 | 2001-03-30 | Yes |
| 203-989 | STAMFORD | 4800 | — | Yes |
| 203-998 | STAMFORD | 4800 | 2004-10-15 | 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.