All assignees
531 prefixes in 660 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 660-300 | GRANT CITY | 965H | 2019-08-01 | Yes |
| 660-301 | HOPKINS | 4932 | — | Yes |
| 660-302 | GRAHAM | 4932 | 2026-08-27 | Yes |
| 660-303 | LANCASTER | 093F | — | Yes |
| 660-306 | MEADVILLE | 5562 | 2021-05-05 | Yes |
| 660-308 | KIMBERLY | 5814 | 2021-10-14 | Yes |
| 660-310 | SEDALIA | 7218 | 2020-04-24 | Yes |
| 660-311 | XXXXXXXXXX | MULT | — | — |
| 660-312 | KNOBNOSTER | 508J | 2014-04-22 | Yes |
| 660-317 | SEDALIA | 5562 | 2021-09-28 | Yes |
| 660-319 | MALTA BEND | 4932 | 2004-12-30 | Yes |
| 660-322 | CARROLLTON | 5814 | 2005-02-22 | Yes |
| 660-323 | BRASHEAR | 1914 | — | — |
| 660-324 | SLATER | 516C | 2011-03-22 | Yes |
| 660-326 | DENVER | 1888 | — | — |
| 660-327 | PARIS | 1151 | — | Yes |
| 660-328 | BROCK | 1931 | — | Yes |
| 660-329 | CARROLLTON | 6534 | — | Yes |
| 660-330 | WARRENSBG | 622J | 2021-09-08 | Yes |
| 660-331 | CLINTON | 6534 | 2025-12-17 | Yes |
| 660-332 | LA PLATA | 1151 | — | Yes |
| 660-333 | OTTERVILLE | 4932 | 2004-12-30 | Yes |
| 660-334 | GALLATIN | 6534 | — | Yes |
| 660-335 | SWEET SPG | 1811 | — | Yes |
| 660-336 | IONIA | 093F | — | Yes |
| 660-337 | FORTUNA | 1917 | — | Yes |
| 660-338 | GLASGOW | 9533 | — | Yes |
| 660-339 | TRENTON | 9533 | — | Yes |
| 660-340 | MARSHALL | 6534 | 2025-08-29 | Yes |
| 660-341 | KIRKSVILLE | 6275 | — | Yes |
| 660-342 | KIRKSVILLE | 6275 | — | Yes |
| 660-343 | SMITHTON | 1811 | — | Yes |
| 660-344 | LEMONS | 1931 | — | Yes |
| 660-345 | BRAYMER | 6155 | — | Yes |
| 660-346 | MACON | 6275 | 2004-04-14 | Yes |
| 660-347 | LA MONTE | 9533 | — | Yes |
| 660-348 | MILAN | 1885 | 2017-01-11 | Yes |
| 660-349 | KIRKSVILLE | 6701 | — | Yes |
| 660-351 | CLINTON | 6534 | — | Yes |
| 660-352 | KNOXVILLE | 1890 | — | Yes |
| 660-353 | MOBERLY | 6701 | 2002-01-07 | Yes |
| 660-354 | POLO | 1890 | — | Yes |
| 660-355 | MARTINSTN | 1931 | — | Yes |
| 660-356 | HIGGINSVL | 965H | 2019-12-05 | Yes |
| 660-357 | TRENTON | 7218 | — | Yes |
| 660-358 | TRENTON | 9533 | — | Yes |
| 660-359 | TRENTON | 9533 | — | Yes |
| 660-360 | SO SEYMOUR | 093F | 2021-12-10 | Yes |
| 660-362 | WARRENSBG | 792K | 2008-09-30 | Yes |
| 660-363 | BLAIRSTOWN | 093F | — | Yes |
| 660-365 | PRINCETON | 6534 | 2002-02-05 | Yes |
| 660-366 | OTTERVILLE | 1811 | — | Yes |
| 660-367 | PATTONSBG | 1885 | — | Yes |
| 660-368 | FLORENCE | 1885 | — | Yes |
| 660-371 | CONCORDIA | 093F | — | Yes |
| 660-372 | MOBERLY | 9533 | 2001-07-11 | Yes |
| 660-373 | BETHANY | 5814 | 2005-01-21 | Yes |
| 660-375 | WESTVILLE | 5814 | — | — |
| 660-376 | MARCELINE | 9533 | — | Yes |
| 660-378 | DALTON | 145J | — | Yes |
| 660-379 | DOWNING | 9533 | — | Yes |
| 660-382 | MERCER | 1888 | — | — |
| 660-383 | CLINTON | 4932 | 2001-12-12 | Yes |
| 660-384 | BLOMINGTON | 6275 | — | Yes |
| 660-385 | MACON | 1151 | — | Yes |
| 660-386 | BUTLER | 4932 | 2002-02-03 | Yes |
| 660-387 | WESTVILLE | 6534 | 2021-12-08 | Yes |
| 660-388 | SALISBURY | 1864 | — | Yes |
| 660-389 | SO HAMBURG | 1942 | — | — |
| 660-394 | HIGGINSVL | 1865 | — | — |
| 660-395 | MACON | 250A | 2002-10-29 | — |
| 660-397 | EDINA | 9533 | — | Yes |
| 660-398 | HARDIN | 1811 | — | Yes |
| 660-399 | SO SEYMOUR | 1178 | — | — |
| 660-400 | HALE | 965H | 2020-09-01 | Yes |
| 660-402 | MARCELINE | 225F | — | Yes |
| 660-404 | LEONARD | 6534 | 2021-04-18 | Yes |
| 660-409 | HOUSTONIA | 093F | — | Yes |
| 660-411 | XXXXXXXXXX | MULT | — | — |
| 660-412 | BROOKFIELD | 5814 | — | Yes |
| 660-413 | MARCELINE | 5814 | — | Yes |
| 660-414 | MOBERLY | 5814 | — | Yes |
| 660-415 | MACON | 5814 | — | Yes |
| 660-422 | WARRENSBG | 1811 | — | Yes |
| 660-423 | HURDLAND | 1914 | — | — |
| 660-424 | BUTLER | 6534 | — | Yes |
| 660-425 | BETHANY | 1888 | — | — |
| 660-426 | BETHANY | 1888 | — | Yes |
| 660-427 | BUNCETON | 1917 | — | Yes |
| 660-428 | WARSAW | 1811 | — | Yes |
| 660-429 | WARRENSBG | 1811 | — | Yes |
| 660-431 | SMITHTON | 4932 | 2004-12-30 | Yes |
| 660-433 | TIPTON | 1811 | — | Yes |
| 660-434 | KNOX CITY | 1914 | — | — |
| 660-438 | WARSAW | 1811 | — | — |
| 660-439 | NEWHAMPTON | 1888 | — | — |
| 660-440 | BRUNSWICK | 938F | 2006-07-20 | Yes |
| 660-441 | WARRENSBG | 6534 | — | Yes |
| 660-442 | MOUND CITY | 1811 | — | Yes |
| 660-444 | GLASGOW | 965H | 2019-08-01 | 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.