All assignees
525 prefixes in 435 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 435-748 | CASTLEDALE | 2278 | — | — |
| 435-749 | CASTLEDALE | 6571 | — | Yes |
| 435-750 | LOGAN | 9636 | — | — |
| 435-752 | LOGAN | 9636 | — | — |
| 435-753 | LOGAN | 9636 | — | — |
| 435-754 | LOGAN | 9636 | — | Yes |
| 435-755 | LOGAN | 9636 | — | — |
| 435-757 | LOGAN | 6010 | — | — |
| 435-758 | SCIPIO | 4429 | — | — |
| 435-759 | KANOSH | 4429 | — | — |
| 435-760 | LOGAN | 6571 | — | Yes |
| 435-764 | LOGAN | 6529 | — | — |
| 435-766 | VERNAL | 013B | 2004-04-29 | — |
| 435-767 | ST GEORGE | 3231 | 2001-10-23 | Yes |
| 435-768 | DUCHESNE | 013B | 2004-04-29 | — |
| 435-770 | LOGAN | 6571 | — | — |
| 435-771 | MONROE | 7530 | — | Yes |
| 435-772 | ST GEORGE | 9636 | — | Yes |
| 435-773 | ST GEORGE | 7176 | — | Yes |
| 435-774 | LOGAN | 7176 | — | Yes |
| 435-775 | TOOELE | 7176 | — | Yes |
| 435-776 | PARK CITY | 7176 | — | Yes |
| 435-777 | HEBER CITY | 073H | 2017-03-01 | Yes |
| 435-778 | MANILA | 013B | 2003-12-18 | — |
| 435-779 | GARDENCITY | 013B | 2003-12-18 | — |
| 435-781 | VERNAL | 2287 | — | — |
| 435-782 | JORDANELLE | 2288 | — | — |
| 435-783 | KAMAS | 2288 | — | — |
| 435-784 | MANILA | 2297 | — | — |
| 435-785 | TIMBERLAKE | 2288 | 2001-10-09 | — |
| 435-786 | LOGAN | 9636 | — | — |
| 435-787 | LOGAN | 9636 | — | — |
| 435-788 | TICABOO | 4611 | — | — |
| 435-789 | VERNAL | 2287 | — | — |
| 435-790 | VERNAL | 6010 | — | — |
| 435-792 | LOGAN | 9636 | — | — |
| 435-793 | RANDOLPH | 2288 | — | — |
| 435-795 | HOLDEN | 4429 | — | — |
| 435-797 | LOGAN | 871E | — | — |
| 435-799 | LOGAN | 6571 | — | Yes |
| 435-800 | PARK CITY | 871E | 2017-08-31 | Yes |
| 435-801 | — | — | ||
| 435-811 | XXXXXXXXXX | MULT | — | — |
| 435-813 | MANTI | 6571 | — | Yes |
| 435-817 | ST GEORGE | 6010 | 2005-09-12 | Yes |
| 435-819 | KANAB | 6571 | — | Yes |
| 435-820 | PRICE | 6010 | — | Yes |
| 435-822 | DUCHESNE | 1772 | — | — |
| 435-823 | ROOSEVELT | 1772 | — | — |
| 435-824 | NEOLA | 1772 | 2021-09-16 | — |
| 435-826 | ESCALANTE | 2286 | — | — |
| 435-827 | ALMO | 2213 | — | — |
| 435-828 | VERNAL | 1772 | — | — |
| 435-830 | TOOELE | 6010 | — | — |
| 435-831 | DUGWAY | 2283 | — | — |
| 435-833 | TOOELE | 9636 | — | — |
| 435-834 | BRYCECNYON | 2286 | — | — |
| 435-835 | MANTI | 2282 | — | — |
| 435-836 | LOA | 2286 | — | — |
| 435-837 | RUSHVALLEY | 4611 | — | — |
| 435-839 | VERNON | 4611 | — | — |
| 435-840 | TOOELE | 6571 | — | Yes |
| 435-841 | TOOELE | 6571 | — | Yes |
| 435-842 | MEADOW | 4429 | — | — |
| 435-843 | TOOELE | 9636 | — | — |
| 435-846 | OAK CITY | 4429 | — | — |
| 435-848 | TABIONA | 2287 | — | — |
| 435-849 | TOOELE | 6010 | — | Yes |
| 435-850 | TOOELE | 6529 | — | Yes |
| 435-851 | MANTI | 6571 | — | Yes |
| 435-854 | THATCHER | 4429 | — | Yes |
| 435-855 | GARRISON | 4611 | — | — |
| 435-856 | NEPHI | 3231 | 2001-10-23 | Yes |
| 435-857 | LYNNDYL | 4429 | — | — |
| 435-862 | ST GEORGE | 6529 | 2002-10-18 | Yes |
| 435-863 | PROMONTORY | 4429 | — | — |
| 435-864 | DELTA | 4429 | — | Yes |
| 435-865 | CEDAR CITY | 9636 | — | — |
| 435-866 | PORTAGE | 4429 | — | Yes |
| 435-867 | CEDAR CITY | 9636 | — | — |
| 435-868 | CEDAR CITY | 9636 | 2002-08-22 | Yes |
| 435-870 | SOLDER SMT | 2277 | — | — |
| 435-871 | PARKVALLEY | 4611 | — | — |
| 435-872 | SNOWVILLE | 4429 | — | Yes |
| 435-874 | HILDALE | 2286 | — | Yes |
| 435-877 | APPLE VLLY | 2286 | — | — |
| 435-878 | ENTERPRISE | 2286 | — | — |
| 435-879 | ST GEORGE | 9636 | — | Yes |
| 435-880 | DUTCH JOHN | 013B | — | — |
| 435-881 | LOGAN | 6010 | — | Yes |
| 435-882 | TOOELE | 9636 | — | — |
| 435-884 | TOOELE | 9636 | — | Yes |
| 435-885 | DUTCH JOHN | 2297 | — | — |
| 435-888 | PRICE | 1190 | — | — |
| 435-889 | GREENDALE | 2297 | — | — |
| 435-890 | LOGAN | 6571 | — | Yes |
| 435-893 | RICHFIELD | 9636 | — | Yes |
| 435-896 | RICHFIELD | 9636 | — | Yes |
| 435-899 | KANAB | 6571 | — | Yes |
| 435-900 | ST GEORGE | 965H | 2019-06-03 | 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.