All assignees
605 prefixes in 641 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 641-300 | OSAGE | 965H | 2019-12-27 | Yes |
| 641-301 | MARTENSDL | 624H | 2024-05-20 | Yes |
| 641-302 | RHODES | 490J | 2023-05-11 | Yes |
| 641-303 | STATE CTR | 751F | 2023-10-25 | Yes |
| 641-304 | LENOX | 6570 | 2024-08-27 | Yes |
| 641-305 | MELROSE | 751F | 2025-04-21 | Yes |
| 641-306 | THOMPSON | 9877 | 2026-04-22 | Yes |
| 641-307 | GUTHRIECTR | 1170 | 2016-08-31 | Yes |
| 641-308 | NEW HAVEN | 1177 | 2006-10-16 | — |
| 641-309 | NEW HAVEN | 1177 | 2006-10-16 | — |
| 641-310 | MARSHALLTN | 221F | 2024-03-08 | Yes |
| 641-311 | XXXXXXXXXX | MULT | — | — |
| 641-312 | — | — | ||
| 641-315 | MARBLEROCK | 3620 | — | Yes |
| 641-316 | IOWA FALLS | 221F | 2005-02-01 | Yes |
| 641-317 | KANAWHA | 860F | 2011-04-19 | Yes |
| 641-318 | KNOXVILLE | 6529 | — | — |
| 641-319 | — | — | ||
| 641-321 | MOUNT AYR | 508J | 2017-12-12 | Yes |
| 641-322 | CORNING | 1127 | — | Yes |
| 641-323 | NORTHWOOD | 6103 | 2005-08-30 | Yes |
| 641-324 | NORTHWOOD | 9631 | — | Yes |
| 641-325 | GRINNELL | 6266 | — | Yes |
| 641-326 | MONA | 1123 | — | Yes |
| 641-327 | WELLSBURG | 1170 | 2019-10-21 | Yes |
| 641-328 | MARSHALLTN | 6529 | 2001-05-23 | Yes |
| 641-329 | BAILEY | 1123 | — | Yes |
| 641-330 | CHARLES CY | 6266 | — | Yes |
| 641-332 | GUTHRIECTR | 5840 | 2001-10-30 | Yes |
| 641-333 | LENOX | 1127 | — | — |
| 641-334 | ROSE HILL | 221F | 2019-08-29 | Yes |
| 641-335 | PRESCOTT | 1167 | — | Yes |
| 641-336 | CLEARFIELD | 1178 | — | Yes |
| 641-337 | ORIENT | 1167 | — | Yes |
| 641-338 | THAYER | 1888 | — | Yes |
| 641-339 | SHANNON CY | 1178 | — | Yes |
| 641-340 | OSCEOLA | 9572 | — | — |
| 641-341 | THORNTON | 221F | 2021-12-08 | Yes |
| 641-342 | OSCEOLA | 1167 | — | — |
| 641-343 | GREENFIELD | 1170 | — | Yes |
| 641-344 | CRESTON | 6266 | — | Yes |
| 641-345 | NEVINVILLE | 1137 | — | — |
| 641-346 | ARISPE | 1178 | — | Yes |
| 641-347 | AFTON | 1178 | — | Yes |
| 641-348 | KENT | 1167 | — | Yes |
| 641-349 | SHARPSBURG | 1127 | — | — |
| 641-351 | MARSHALLTN | 5562 | 2001-04-23 | Yes |
| 641-352 | MARSHALLTN | 829J | 2002-01-28 | Yes |
| 641-353 | KENSETT | 751F | 2007-02-14 | Yes |
| 641-354 | MARSHALLTN | 5562 | 2018-06-20 | Yes |
| 641-355 | CLEAR LAKE | 1132 | — | Yes |
| 641-356 | GLADBROOK | 965H | 2019-12-27 | Yes |
| 641-357 | CLEAR LAKE | 1132 | — | — |
| 641-358 | MESERVEY | 1127 | — | — |
| 641-359 | IOWA FALLS | 939H | 2023-09-13 | Yes |
| 641-362 | CRESTON | 751F | 2019-02-12 | Yes |
| 641-363 | MINGO | 1170 | — | Yes |
| 641-364 | ALTA VISTA | 1167 | — | Yes |
| 641-366 | CONRAD | 1297 | — | Yes |
| 641-368 | OTLEY | 624H | 2024-05-22 | Yes |
| 641-369 | BRIDGEWTR | 1170 | — | Yes |
| 641-372 | ROCKWELL | 751F | 2007-02-14 | Yes |
| 641-373 | IOWA FALLS | 6266 | 2002-07-16 | Yes |
| 641-377 | COLO | 1134 | — | Yes |
| 641-380 | MASON CITY | 9631 | — | — |
| 641-381 | NORTHWOOD | 6570 | — | Yes |
| 641-382 | BAILEY | 6534 | 2021-05-25 | Yes |
| 641-384 | BELMOND | 5562 | 2018-07-30 | Yes |
| 641-385 | COLLINS | 1167 | — | Yes |
| 641-387 | TOLEDO | 7229 | 2018-05-02 | Yes |
| 641-388 | LTL CEDAR | 1177 | 2006-05-01 | — |
| 641-390 | NORTHWOOD | 6570 | — | Yes |
| 641-393 | ELMA | 1167 | — | Yes |
| 641-394 | NEWHAMPTON | 1170 | — | Yes |
| 641-395 | RUDD | 1172 | — | — |
| 641-396 | ST CHARLES | 1209 | — | — |
| 641-397 | MARBLEROCK | 1170 | — | Yes |
| 641-398 | FLOYD | 1172 | — | — |
| 641-400 | HUMESTON | 221F | 2019-11-05 | Yes |
| 641-401 | SWALEDALE | 221F | 2018-10-25 | Yes |
| 641-402 | MARTINSBG | 624H | 2024-05-20 | Yes |
| 641-403 | BAGLEY | 444G | 2024-03-04 | Yes |
| 641-406 | MESERVEY | 221F | 2018-10-25 | Yes |
| 641-407 | LINDEN | 444G | 2024-03-04 | Yes |
| 641-408 | CORNING | 5562 | 2026-06-11 | Yes |
| 641-410 | NEW HAVEN | 1177 | 2006-10-16 | — |
| 641-411 | XXXXXXXXXX | MULT | — | — |
| 641-413 | LENOX | 6570 | 2004-11-11 | — |
| 641-414 | OSCEOLA | 6266 | — | Yes |
| 641-416 | PELLA | 6529 | — | Yes |
| 641-417 | NEWTON | 6529 | — | Yes |
| 641-418 | CORNING | 6570 | 2004-11-11 | Yes |
| 641-420 | MASON CITY | 6570 | — | — |
| 641-421 | MASON CITY | 9631 | — | — |
| 641-422 | MASON CITY | 9631 | — | — |
| 641-423 | MASON CITY | 9631 | — | — |
| 641-424 | MASON CITY | 9631 | — | — |
| 641-425 | MASON CITY | 6266 | — | Yes |
| 641-426 | CHARLES CY | 6570 | — | Yes |
| 641-427 | BAGLEY | 1178 | — | 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.