All assignees
570 prefixes in 586 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 586-734 | — | — | ||
| 586-735 | MT CLEMENS | 6003 | 2015-01-30 | Yes |
| 586-737 | UTICA | 829J | — | Yes |
| 586-738 | MT CLEMENS | 770E | — | Yes |
| 586-739 | UTICA | 9323 | — | — |
| 586-741 | MT CLEMENS | 9323 | — | Yes |
| 586-742 | ROSEVILLE | 516J | 2022-02-24 | Yes |
| 586-744 | WARREN | 2964 | 2005-08-18 | Yes |
| 586-745 | WASHINGTON | 516C | 2006-03-20 | Yes |
| 586-746 | MT CLEMENS | 9323 | — | Yes |
| 586-747 | MT CLEMENS | 6003 | — | — |
| 586-748 | WARREN | 6003 | 2015-07-16 | Yes |
| 586-749 | NEW HAVEN | 9323 | — | — |
| 586-751 | CENTERLINE | 9323 | — | — |
| 586-752 | ROMEO | 9323 | — | — |
| 586-753 | CENTERLINE | 9323 | — | Yes |
| 586-754 | CENTERLINE | 9323 | — | — |
| 586-755 | CENTERLINE | 9323 | — | — |
| 586-756 | CENTERLINE | 9323 | — | — |
| 586-757 | CENTERLINE | 9323 | — | — |
| 586-758 | CENTERLINE | 9323 | — | Yes |
| 586-759 | CENTERLINE | 9323 | — | — |
| 586-764 | MT CLEMENS | 6534 | — | — |
| 586-765 | MT CLEMENS | 2964 | 2014-11-25 | Yes |
| 586-767 | WARREN | 6003 | 2014-10-17 | Yes |
| 586-770 | MT CLEMENS | 6534 | — | — |
| 586-771 | ROSEVILLE | 9323 | — | — |
| 586-772 | ROSEVILLE | 9323 | — | — |
| 586-773 | ROSEVILLE | 9323 | — | — |
| 586-774 | ROSEVILLE | 9323 | — | — |
| 586-775 | ROSEVILLE | 9323 | — | — |
| 586-776 | ROSEVILLE | 9323 | — | — |
| 586-777 | ROSEVILLE | 9323 | — | — |
| 586-778 | ROSEVILLE | 9323 | — | — |
| 586-779 | ROSEVILLE | 9323 | — | — |
| 586-781 | WASHINGTON | 9323 | — | — |
| 586-782 | CENTERLINE | 7279 | — | Yes |
| 586-783 | MT CLEMENS | 9323 | — | — |
| 586-784 | ARMADA | 9323 | — | Yes |
| 586-785 | ROMEO | 318J | 2015-04-13 | Yes |
| 586-786 | WASHINGTON | 9323 | — | Yes |
| 586-787 | MT CLEMENS | 6003 | 2013-01-24 | Yes |
| 586-788 | UTICA | 770E | 2017-11-29 | Yes |
| 586-789 | MT CLEMENS | 6003 | 2013-01-24 | Yes |
| 586-790 | MT CLEMENS | 9323 | — | — |
| 586-791 | MT CLEMENS | 9323 | — | — |
| 586-792 | MT CLEMENS | 9323 | — | — |
| 586-795 | WARREN | 9323 | — | — |
| 586-797 | UTICA | 6120 | 2002-09-10 | Yes |
| 586-799 | UTICA | 6120 | — | Yes |
| 586-800 | ROSEVILLE | 543C | 2017-10-06 | Yes |
| 586-801 | ROSEVILLE | 5562 | — | Yes |
| 586-802 | UTICA | 7279 | — | Yes |
| 586-803 | UTICA | 9323 | — | Yes |
| 586-804 | WARREN | 2964 | — | Yes |
| 586-805 | WARREN | 6534 | — | Yes |
| 586-806 | CENTERLINE | 961J | — | Yes |
| 586-808 | WARREN | 6534 | — | — |
| 586-810 | — | — | ||
| 586-811 | XXXXXXXXXX | MULT | — | — |
| 586-816 | WASHINGTON | 7279 | — | Yes |
| 586-817 | MT CLEMENS | 6003 | — | Yes |
| 586-818 | MT CLEMENS | 6003 | 2015-06-10 | Yes |
| 586-819 | WARREN | 7279 | — | Yes |
| 586-822 | WARREN | 2964 | 2001-02-27 | — |
| 586-823 | ROSEVILLE | 5562 | — | Yes |
| 586-825 | WARREN | 9323 | — | Yes |
| 586-826 | WARREN | 9323 | — | — |
| 586-828 | MT CLEMENS | 6003 | 2015-07-16 | Yes |
| 586-830 | WARREN | 9748 | — | — |
| 586-831 | WARREN | 9748 | — | — |
| 586-832 | WARREN | 9748 | — | — |
| 586-834 | CENTERLINE | 770E | — | Yes |
| 586-835 | MT CLEMENS | 6003 | 2015-03-20 | Yes |
| 586-837 | UTICA | 516J | 2022-02-24 | Yes |
| 586-838 | WARREN | 6120 | — | Yes |
| 586-839 | MT CLEMENS | 6003 | — | Yes |
| 586-840 | MT CLEMENS | 770E | — | Yes |
| 586-842 | MT CLEMENS | 6534 | 2016-01-21 | Yes |
| 586-843 | UTICA | 770E | — | Yes |
| 586-845 | WARREN | 6003 | 2015-06-10 | Yes |
| 586-846 | MT CLEMENS | 6003 | — | Yes |
| 586-848 | MT CLEMENS | 6003 | 2016-01-14 | Yes |
| 586-850 | MT CLEMENS | 6003 | — | — |
| 586-854 | MT CLEMENS | 6003 | — | — |
| 586-855 | MT CLEMENS | 2964 | 2001-06-04 | Yes |
| 586-856 | UTICA | 9748 | — | — |
| 586-859 | ROSEVILLE | 770E | — | Yes |
| 586-860 | WARREN | 6630 | — | — |
| 586-863 | ROSEVILLE | 6120 | — | Yes |
| 586-864 | WARREN | 770E | — | Yes |
| 586-868 | MT CLEMENS | 829J | — | Yes |
| 586-870 | NEWBALTIMR | 9748 | — | — |
| 586-871 | ROSEVILLE | 5562 | — | Yes |
| 586-872 | ROSEVILLE | 5562 | — | Yes |
| 586-873 | WARREN | 2964 | — | — |
| 586-876 | MT CLEMENS | 6534 | — | — |
| 586-879 | ROSEVILLE | 770E | — | Yes |
| 586-880 | CENTERLINE | 7279 | — | Yes |
| 586-881 | MT CLEMENS | 6003 | 2015-06-08 | 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.