All assignees
782 prefixes in 313 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 313-803 | DETROITZN5 | 9748 | — | — |
| 313-804 | DETROITZN5 | 6534 | — | Yes |
| 313-805 | DETROITZN5 | 2964 | 2002-02-13 | Yes |
| 313-806 | DETROITZN5 | 6003 | — | — |
| 313-807 | DETROITZN5 | 6534 | 2025-06-20 | Yes |
| 313-808 | DETROITZN5 | 6534 | — | Yes |
| 313-809 | DETROITZN5 | 6534 | 2025-07-15 | Yes |
| 313-810 | DETROITZN5 | 5562 | 2025-03-06 | Yes |
| 313-811 | XXXXXXXXXX | MULT | — | — |
| 313-812 | DETROITZN5 | 2964 | 2013-06-26 | Yes |
| 313-813 | DETROITZN4 | 9748 | — | — |
| 313-814 | DETROITZN4 | 9748 | — | — |
| 313-815 | DETROITZN5 | 6003 | — | — |
| 313-816 | DETROITZN1 | 948H | 2018-08-31 | Yes |
| 313-817 | DETROITZN5 | 2964 | — | Yes |
| 313-818 | DETROITZN1 | 2964 | 2014-11-24 | Yes |
| 313-819 | DETROITZN5 | 6534 | — | — |
| 313-820 | DETROITZN5 | 6003 | — | — |
| 313-821 | DETROITZN2 | 9323 | — | Yes |
| 313-822 | DETROITZN2 | 9323 | — | — |
| 313-823 | DETROITZN2 | 9323 | — | Yes |
| 313-824 | DETROITZN2 | 9323 | — | Yes |
| 313-825 | DETROITZN2 | 770E | — | Yes |
| 313-826 | DETROITZN3 | 770E | — | Yes |
| 313-827 | DETROITZN6 | 829J | — | Yes |
| 313-828 | DETROITZN5 | 6120 | — | Yes |
| 313-829 | DETROITZN5 | 2964 | 2010-09-13 | Yes |
| 313-830 | DETROITZN5 | 543C | 2025-11-20 | Yes |
| 313-831 | DETROITZN1 | 9323 | — | Yes |
| 313-832 | DETROITZN1 | 9323 | — | — |
| 313-833 | DETROITZN1 | 9323 | — | — |
| 313-834 | DETROITZN4 | 9323 | — | — |
| 313-835 | DETROITZN4 | 9323 | — | — |
| 313-836 | DETROITZN4 | 9323 | — | — |
| 313-837 | DETROITZN4 | 9323 | — | — |
| 313-838 | DETROITZN4 | 9323 | — | — |
| 313-839 | DETROITZN2 | 9323 | — | — |
| 313-840 | DETROITZN5 | 9748 | — | — |
| 313-841 | DETROITZN6 | 9323 | — | — |
| 313-842 | DETROITZN6 | 9323 | — | — |
| 313-843 | DETROITZN6 | 9323 | — | — |
| 313-844 | DETROITZN5 | 2964 | 2011-08-31 | Yes |
| 313-845 | DETROITZN6 | 9323 | — | — |
| 313-846 | DETROITZN6 | 9323 | — | — |
| 313-847 | DETROITZN5 | 6003 | 2026-01-07 | Yes |
| 313-848 | DETROITZN5 | 2964 | 2010-07-07 | Yes |
| 313-849 | DETROITZN6 | 9323 | — | — |
| 313-850 | DETROITZN5 | 2964 | — | Yes |
| 313-851 | DETROITZN6 | 9748 | — | — |
| 313-852 | DETROITZN3 | 9323 | — | — |
| 313-853 | DETROITZN6 | 6534 | 2026-02-04 | Yes |
| 313-854 | DETROITZN6 | 6534 | — | Yes |
| 313-855 | DETROITZN4 | 2964 | 2014-11-07 | Yes |
| 313-856 | DETROITZN5 | 991E | 2018-03-08 | Yes |
| 313-857 | DETROITZN6 | 6534 | 2025-09-05 | Yes |
| 313-858 | DETROITZN6 | 2964 | 2014-08-08 | Yes |
| 313-859 | DETROITZN5 | 6120 | — | Yes |
| 313-860 | DETROITZN5 | 6534 | 2026-02-04 | Yes |
| 313-861 | DETROITZN4 | 9323 | — | — |
| 313-862 | DETROITZN4 | 9323 | — | — |
| 313-863 | DETROITZN4 | 9323 | — | — |
| 313-864 | DETROITZN4 | 9323 | — | — |
| 313-865 | DETROITZN3 | 9323 | — | — |
| 313-866 | DETROITZN3 | 9323 | — | — |
| 313-867 | DETROITZN3 | 9323 | — | — |
| 313-868 | DETROITZN3 | 9323 | — | — |
| 313-869 | DETROITZN3 | 9323 | — | — |
| 313-870 | DETROITZN1 | 9323 | — | Yes |
| 313-871 | DETROITZN1 | 9323 | — | — |
| 313-872 | DETROITZN1 | 9323 | — | Yes |
| 313-873 | DETROITZN1 | 9323 | — | — |
| 313-874 | DETROITZN1 | 9323 | — | — |
| 313-875 | DETROITZN1 | 9323 | — | — |
| 313-876 | DETROITZN1 | 9323 | — | — |
| 313-877 | DETROITZN1 | 9323 | — | Yes |
| 313-878 | DETROITZN5 | 6534 | — | Yes |
| 313-879 | DETROITZN1 | 6120 | — | Yes |
| 313-880 | DETROITZN1 | 597F | 2019-06-17 | Yes |
| 313-881 | DETROITZN2 | 9323 | — | — |
| 313-882 | DETROITZN2 | 9323 | — | — |
| 313-883 | DETROITZN3 | 9323 | — | Yes |
| 313-884 | DETROITZN2 | 9323 | — | — |
| 313-885 | DETROITZN2 | 9323 | — | — |
| 313-886 | DETROITZN2 | 9323 | — | — |
| 313-887 | DETROITZN1 | 6120 | — | Yes |
| 313-888 | DETROITZN1 | 543C | 2015-04-09 | Yes |
| 313-889 | DETROITZN5 | 991E | 2019-04-11 | Yes |
| 313-890 | DETROITZN5 | 6534 | 2026-05-27 | Yes |
| 313-891 | DETROITZN3 | 9323 | — | — |
| 313-892 | DETROITZN3 | 9323 | — | — |
| 313-893 | DETROITZN3 | 9323 | — | — |
| 313-894 | DETROITZN1 | 9323 | — | — |
| 313-895 | DETROITZN1 | 9323 | — | Yes |
| 313-896 | DETROITZN1 | 9323 | — | Yes |
| 313-897 | DETROITZN1 | 9323 | — | — |
| 313-898 | DETROITZN1 | 9323 | — | Yes |
| 313-899 | DETROITZN1 | 9323 | — | Yes |
| 313-900 | DETROITZN5 | 965H | 2022-03-10 | Yes |
| 313-901 | DETROITZN5 | 6534 | 2026-05-27 | Yes |
| 313-902 | DETROITZN6 | 6534 | 2026-05-27 | 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.