All assignees
62 prefixes in 283 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 283-200 | TRENTON | 464C | 2023-06-09 | Yes |
| 283-201 | CLERMONT | 464C | 2023-06-09 | Yes |
| 283-202 | MORROW | 464C | 2023-06-09 | Yes |
| 283-203 | CINCINNATI | 6534 | 2023-06-21 | Yes |
| 283-204 | MORNINGSUN | 464C | 2023-07-20 | Yes |
| 283-205 | SO LEBANON | 464C | 2023-07-20 | Yes |
| 283-206 | WILLIAMSBG | 464C | 2023-07-20 | Yes |
| 283-207 | SHANDON | 464C | 2023-07-20 | Yes |
| 283-208 | HARRISON | 464C | 2023-07-20 | Yes |
| 283-209 | CINCINNATI | 464C | 2023-07-27 | Yes |
| 283-210 | MASON | 732J | 2023-08-11 | Yes |
| 283-211 | XXXXXXXXXX | MULT | — | — |
| 283-212 | HAMILTON | 464C | 2023-09-28 | Yes |
| 283-213 | LTL MIAMI | 464C | 2023-09-28 | Yes |
| 283-214 | NEWTONSVL | 6534 | 2023-10-13 | Yes |
| 283-215 | HAMILTON | 464C | 2024-01-29 | Yes |
| 283-216 | BETHANY | 464C | 2024-02-01 | Yes |
| 283-217 | LTL MIAMI | 515J | 2024-02-06 | Yes |
| 283-218 | CLERMONT | 6529 | 2024-02-20 | Yes |
| 283-219 | HAMILTON | 6529 | 2024-02-20 | Yes |
| 283-220 | CINCINNATI | 939H | 2024-03-05 | Yes |
| 283-221 | LEBANON | 464C | 2024-03-07 | Yes |
| 283-222 | CINCINNATI | 742J | 2024-03-11 | Yes |
| 283-223 | CINCINNATI | 475J | 2024-04-17 | Yes |
| 283-224 | CINCINNATI | 598J | — | Yes |
| 283-225 | HAMILTON | 6529 | 2024-09-09 | Yes |
| 283-226 | TRENTON | 464C | 2024-09-10 | Yes |
| 283-227 | CINCINNATI | 616J | 2024-10-01 | Yes |
| 283-228 | SEVEN MILE | 598J | 2024-10-08 | Yes |
| 283-229 | CINCINNATI | 6534 | 2024-12-26 | Yes |
| 283-230 | CINCINNATI | 6534 | 2024-12-26 | Yes |
| 283-231 | HAMILTON | 6534 | 2024-12-26 | Yes |
| 283-232 | LEBANON | 6534 | 2024-12-26 | Yes |
| 283-233 | OXFORD | 6534 | 2025-01-06 | Yes |
| 283-234 | CLERMONT | 6529 | 2025-04-03 | Yes |
| 283-235 | CINCINNATI | 700J | 2025-05-28 | Yes |
| 283-236 | MASON | 464C | 2026-05-07 | Yes |
| 283-237 | CINCINNATI | 6534 | 2025-08-20 | Yes |
| 283-238 | CINCINNATI | 6534 | 2025-12-16 | Yes |
| 283-239 | MIDDLETOWN | 464C | 2026-08-26 | Yes |
| 283-283 | CINCINNATI | 624H | 2023-07-06 | Yes |
| 283-300 | MIDDLETOWN | 490J | 2026-01-23 | Yes |
| 283-311 | XXXXXXXXXX | MULT | — | — |
| 283-333 | CINCINNATI | 765H | 2023-11-17 | Yes |
| 283-411 | XXXXXXXXXX | MULT | — | — |
| 283-444 | BETHEL | 765H | 2023-06-21 | Yes |
| 283-511 | XXXXXXXXXX | MULT | — | — |
| 283-529 | BUTLERVL | 464C | 2025-12-29 | Yes |
| 283-555 | DIR ASST | MULT | — | — |
| 283-611 | XXXXXXXXXX | MULT | — | — |
| 283-666 | FAYETTEVL | 464C | 2025-12-29 | Yes |
| 283-700 | — | — | ||
| 283-711 | XXXXXXXXXX | MULT | — | — |
| 283-777 | WAYNESVL | 765H | 2023-10-17 | Yes |
| 283-811 | XXXXXXXXXX | MULT | — | — |
| 283-888 | HAMILTON | 765H | 2023-09-18 | Yes |
| 283-911 | XXXXXXXXXX | MULT | — | — |
| 283-950 | — | — | ||
| 283-958 | — | — | ||
| 283-959 | — | — | ||
| 283-976 | — | — | ||
| 283-999 | LTL MIAMI | 765H | 2023-10-11 | 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.