UNITED STATES CELLULAR - IA
39 prefixes in 641 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 641-202 | CRESTON | 6266 | 2001-02-14 | Yes |
| 641-203 | CHARITON | 6266 | 2001-02-14 | Yes |
| 641-216 | CENTERVL | 6266 | — | Yes |
| 641-218 | KNOXVILLE | 6266 | — | Yes |
| 641-221 | GREENFIELD | 6266 | 2003-04-29 | Yes |
| 641-247 | FONTANELLE | 6266 | 2009-01-13 | Yes |
| 641-289 | LAMONI | 6266 | 2009-06-03 | Yes |
| 641-295 | OSKALOOSA | 6266 | 2002-02-25 | Yes |
| 641-325 | GRINNELL | 6266 | — | Yes |
| 641-330 | CHARLES CY | 6266 | — | Yes |
| 641-344 | CRESTON | 6266 | — | Yes |
| 641-373 | IOWA FALLS | 6266 | 2002-07-16 | Yes |
| 641-414 | OSCEOLA | 6266 | — | Yes |
| 641-425 | MASON CITY | 6266 | — | Yes |
| 641-430 | MASON CITY | 6266 | — | Yes |
| 641-431 | YALE | 6266 | — | Yes |
| 641-485 | MARSHALLTN | 6266 | — | Yes |
| 641-512 | MASON CITY | 6266 | — | Yes |
| 641-521 | NEWTON | 6266 | — | Yes |
| 641-572 | LEON | 6266 | 2009-06-03 | Yes |
| 641-660 | OSKALOOSA | 6266 | — | Yes |
| 641-706 | NEWHAMPTON | 6266 | 2025-03-21 | Yes |
| 641-718 | NEWHAMPTON | 6266 | 2025-03-21 | Yes |
| 641-729 | NEWHAMPTON | 6266 | 2025-03-21 | Yes |
| 641-751 | MARSHALLTN | 6266 | — | Yes |
| 641-770 | NEWHAMPTON | 6266 | 2025-03-21 | Yes |
| 641-777 | OTTUMWA | 6266 | — | Yes |
| 641-780 | PELLA | 6266 | — | Yes |
| 641-799 | OTTUMWA | 6266 | — | Yes |
| 641-801 | NEWHAMPTON | 6266 | 2025-03-21 | Yes |
| 641-818 | NEWHAMPTON | 6266 | 2025-03-21 | Yes |
| 641-880 | NEWHAMPTON | 6266 | 2025-03-21 | Yes |
| 641-891 | KNOXVILLE | 6266 | — | Yes |
| 641-895 | CENTERVL | 6266 | — | Yes |
| 641-901 | NEWHAMPTON | 6266 | 2025-03-21 | Yes |
| 641-902 | NEWHAMPTON | 6266 | 2025-03-21 | Yes |
| 641-919 | FAIRFIELD | 6266 | — | Yes |
| 641-990 | GRINNELL | 6266 | — | Yes |
| 641-997 | OTTUMWA | 6266 | 2024-11-11 | 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.