All assignees
43 prefixes in 274 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 274-200 | WINNECONNE | 624H | 2024-10-11 | Yes |
| 274-201 | NEW LONDON | 6529 | 2024-11-12 | Yes |
| 274-202 | TWO RIVERS | 225C | 2025-01-09 | Yes |
| 274-203 | ALGOMA | 6529 | 2025-01-15 | Yes |
| 274-204 | MANITOWOC | 6692 | 2025-01-15 | Yes |
| 274-205 | COLUMBUS | 6529 | 2025-01-16 | Yes |
| 274-206 | LUXEMBURG | 6529 | 2025-01-22 | Yes |
| 274-207 | GREEN BAY | 616J | 2024-12-20 | Yes |
| 274-208 | NESHKORO | 6529 | 2025-01-22 | Yes |
| 274-209 | OMRO | 6529 | 2025-01-22 | Yes |
| 274-210 | RIPON | 6529 | 2025-01-23 | Yes |
| 274-211 | XXXXXXXXXX | MULT | — | — |
| 274-212 | KEWAUNEE | 5564 | 2025-02-13 | Yes |
| 274-214 | CAMBRIA | 5562 | 2025-02-28 | Yes |
| 274-215 | DENMARK | 5562 | 2025-02-28 | Yes |
| 274-216 | EGG HARBOR | 5562 | 2025-02-28 | Yes |
| 274-217 | WAUTOMA | 5562 | 2025-02-28 | Yes |
| 274-218 | GREEN BAY | 700J | 2025-12-22 | Yes |
| 274-222 | GREEN BAY | 883K | 2026-03-18 | Yes |
| 274-226 | OAKFIELD | 145J | 2025-03-24 | Yes |
| 274-227 | NEENAH | 6534 | 2025-05-15 | Yes |
| 274-228 | SHEBOYGAN | 6534 | 2025-05-15 | Yes |
| 274-274 | MANITOWOC | 624H | 2024-10-11 | Yes |
| 274-300 | GREEN BAY | 205M | 2026-06-17 | Yes |
| 274-311 | XXXXXXXXXX | MULT | — | — |
| 274-333 | RANDOMLAKE | 225C | 2025-12-22 | Yes |
| 274-411 | XXXXXXXXXX | MULT | — | — |
| 274-444 | LAKE MILLS | 225C | 2025-08-21 | Yes |
| 274-511 | XXXXXXXXXX | MULT | — | — |
| 274-555 | DIR ASST | MULT | — | — |
| 274-611 | XXXXXXXXXX | MULT | — | — |
| 274-666 | COLLINS | 225C | 2025-12-22 | Yes |
| 274-700 | — | — | ||
| 274-711 | XXXXXXXXXX | MULT | — | — |
| 274-777 | ROSENDALE | 225C | 2025-08-21 | Yes |
| 274-811 | XXXXXXXXXX | MULT | — | — |
| 274-888 | TISCHMILLS | 225C | 2025-08-21 | Yes |
| 274-911 | XXXXXXXXXX | MULT | — | — |
| 274-950 | — | — | ||
| 274-958 | — | — | ||
| 274-959 | — | — | ||
| 274-976 | — | — | ||
| 274-999 | CASCO | 225C | 2025-08-21 | 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.