All assignees
579 prefixes in 319 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 319-300 | WATERLOO | 6529 | 2018-08-27 | Yes |
| 319-301 | SO ENGLISH | 593K | 2021-04-12 | Yes |
| 319-302 | CENTER PT | 423H | 2019-05-07 | Yes |
| 319-303 | DENVER | 444G | 2021-10-27 | Yes |
| 319-304 | CEDAR RPDS | 425J | 2020-07-23 | Yes |
| 319-305 | MT VERNON | 444G | 2021-10-27 | Yes |
| 319-306 | JESUP | 9877 | 2022-10-26 | Yes |
| 319-307 | DUNKERTON | 9877 | 2023-01-24 | Yes |
| 319-308 | FT MADISON | 6570 | 2020-08-18 | Yes |
| 319-309 | GUERNSEY | 9877 | 2023-01-24 | Yes |
| 319-310 | CEDAR RPDS | 6266 | — | Yes |
| 319-311 | XXXXXXXXXX | MULT | — | — |
| 319-312 | DYSART | 593K | 2010-03-23 | Yes |
| 319-313 | KEOKUK | 2842 | — | Yes |
| 319-314 | READLYN | 9877 | 2023-01-24 | Yes |
| 319-315 | ANAMOSA | 624H | 2021-06-21 | Yes |
| 319-316 | FT MADISON | 2842 | — | Yes |
| 319-317 | CEDAR RPDS | 515J | 2021-04-01 | Yes |
| 319-318 | VINTON | 073H | — | Yes |
| 319-319 | IOWA CITY | 221F | 2022-09-27 | Yes |
| 319-320 | CEDAR RPDS | 544H | 2015-04-09 | Yes |
| 319-321 | IOWA CITY | 6570 | — | — |
| 319-322 | NORWAY | 593K | 2006-11-14 | Yes |
| 319-323 | OELWEIN | 6534 | 2020-06-16 | Yes |
| 319-324 | BRIGHTON | 6534 | 2020-09-21 | Yes |
| 319-325 | IOWA CITY | 6266 | 2001-03-09 | Yes |
| 319-326 | INDEPNDNCE | 985E | 2020-07-21 | Yes |
| 319-327 | INDEPNDNCE | 6266 | 2005-04-26 | Yes |
| 319-328 | NEWHALL | 593K | 2006-11-14 | Yes |
| 319-329 | CEDAR RPDS | 6570 | — | — |
| 319-330 | IOWA CITY | 6266 | — | Yes |
| 319-331 | IOWA CITY | 6570 | — | — |
| 319-332 | INDEPNDNCE | 649D | 2006-04-03 | Yes |
| 319-333 | IOWA CITY | 593K | 2010-03-19 | Yes |
| 319-334 | INDEPNDNCE | 9631 | — | Yes |
| 319-335 | IOWA CITY | 9631 | — | — |
| 319-336 | HILLS | 593K | 2006-11-14 | Yes |
| 319-337 | IOWA CITY | 9631 | — | — |
| 319-338 | IOWA CITY | 9631 | — | — |
| 319-339 | IOWA CITY | 9631 | — | — |
| 319-340 | WATERLOO | 6529 | 2022-07-27 | Yes |
| 319-341 | IOWA CITY | 9631 | — | — |
| 319-342 | LAPORTE CY | 1220 | — | — |
| 319-343 | CENTER PT | 527G | 2011-11-09 | Yes |
| 319-344 | COLUMBSJCT | 1178 | 2015-06-25 | Yes |
| 319-345 | REINBECK | 1167 | — | Yes |
| 319-346 | PARKERSBG | 9631 | — | Yes |
| 319-347 | APLINGTON | 1170 | — | Yes |
| 319-348 | WATERLOO | 965H | 2019-12-17 | Yes |
| 319-349 | WATERLOO | 544H | 2015-05-12 | Yes |
| 319-350 | CEDAR RPDS | 6266 | — | Yes |
| 319-351 | IOWA CITY | 9631 | — | — |
| 319-352 | WAVERLY | 9631 | — | — |
| 319-353 | IOWA CITY | 9631 | — | — |
| 319-354 | IOWA CITY | 9631 | — | — |
| 319-355 | CEDAR RPDS | 9631 | 2005-03-08 | Yes |
| 319-356 | IOWA CITY | 9631 | — | — |
| 319-357 | FAIRFAX | 593K | 2006-11-14 | Yes |
| 319-358 | IOWA CITY | 9631 | — | — |
| 319-359 | IOWA CITY | 593K | 2012-07-11 | Yes |
| 319-360 | CEDAR RPDS | 6570 | — | — |
| 319-361 | CEDAR RPDS | 6266 | — | Yes |
| 319-362 | CEDAR RPDS | 9631 | — | — |
| 319-363 | CEDAR RPDS | 9631 | — | — |
| 319-364 | CEDAR RPDS | 9631 | — | — |
| 319-365 | CEDAR RPDS | 9631 | — | — |
| 319-366 | CEDAR RPDS | 9631 | — | Yes |
| 319-367 | NEW LONDON | 1178 | — | Yes |
| 319-368 | CEDAR RPDS | 9631 | — | — |
| 319-369 | CEDAR RPDS | 9631 | — | — |
| 319-370 | COGGON | 624H | 2021-06-21 | Yes |
| 319-371 | FT MADISON | 6570 | — | Yes |
| 319-372 | FT MADISON | 9631 | — | — |
| 319-373 | CEDAR RPDS | 9631 | — | — |
| 319-374 | ORAN | 6534 | 2022-02-22 | — |
| 319-375 | CEDAR RPDS | 9631 | — | — |
| 319-376 | FT MADISON | 9631 | — | Yes |
| 319-377 | CEDAR RPDS | 9631 | — | — |
| 319-378 | CEDAR RPDS | 9631 | — | — |
| 319-379 | IOWA CITY | 321J | 2020-09-29 | Yes |
| 319-380 | BURLINGTON | 495J | 2020-11-25 | Yes |
| 319-381 | IOWA CITY | 495J | 2020-12-21 | Yes |
| 319-382 | CEDAR RPDS | 551G | 2012-11-05 | Yes |
| 319-383 | IOWA CITY | 6534 | 2011-03-22 | Yes |
| 319-384 | IOWA CITY | 9631 | — | — |
| 319-385 | MTPLEASANT | 1178 | — | — |
| 319-386 | MEDIAPOLIS | 9877 | 2020-09-28 | Yes |
| 319-387 | CENTRAL CY | 624H | 2021-06-21 | Yes |
| 319-388 | DONNELLSON | 9877 | 2021-12-02 | Yes |
| 319-389 | CEDAR RPDS | 6570 | — | — |
| 319-390 | CEDAR RPDS | 9631 | — | — |
| 319-391 | CEDAR RPDS | 732J | 2023-02-17 | Yes |
| 319-392 | DANVILLE | 1147 | — | — |
| 319-393 | CEDAR RPDS | 9631 | — | — |
| 319-394 | MEDIAPOLIS | 1251 | — | — |
| 319-395 | CEDAR RPDS | 9631 | — | — |
| 319-396 | CEDAR RPDS | 9631 | — | — |
| 319-397 | CANTRIL | 1319 | — | — |
| 319-398 | CEDAR RPDS | 9631 | — | — |
| 319-399 | CEDAR RPDS | 9631 | — | — |
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.