NumberResearchRecent thousands-block assignments
2 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, last 30 days — NPA 586
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-11-06 | 586-223-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MT CLEMENS | MI |
| 2024-11-06 | 586-223-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MT CLEMENS | MI |
| 2024-10-30 | 586-926-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | WASHINGTON | MI |
| 2024-10-22 | 586-346-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | UTICA | MI |
| 2024-10-22 | 586-346-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | UTICA | MI |
| 2024-10-22 | 586-346-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | UTICA | MI |
| 2024-10-18 | 586-347-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROSEVILLE | MI |
| 2024-10-02 | 586-205-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MT CLEMENS | MI |
| 2024-09-25 | 586-368-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WARREN | MI |
| 2024-09-25 | 586-368-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WARREN | MI |
| 2024-09-19 | 586-356-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ARMADA | MI |
| 2024-09-19 | 586-356-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ARMADA | MI |
| 2024-09-16 | 586-932-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | UTICA | MI |
| 2024-09-09 | 586-356-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ARMADA | MI |
| 2024-09-09 | 586-356-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ARMADA | MI |
| 2024-09-09 | 586-356-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ARMADA | MI |
| 2024-09-09 | 586-356-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ARMADA | MI |
| 2024-09-06 | 586-347-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROSEVILLE | MI |
| 2024-08-29 | 586-340-7XXX | 7000–7999 | Assigned | PEERLESS NETWORK OF MICHIGAN, LLC - MI | 933G | CENTERLINE | MI |
| 2024-08-06 | 586-341-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROMEO | MI |
| 2024-07-19 | 586-223-8XXX | 8000–8999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | MT CLEMENS | MI |
| 2024-07-12 | 586-205-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MT CLEMENS | MI |
| 2024-07-12 | 586-347-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROSEVILLE | MI |
| 2024-07-03 | 586-346-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | UTICA | MI |
| 2024-07-03 | 586-346-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | UTICA | MI |
| 2024-06-13 | 586-356-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ARMADA | MI |
| 2024-06-13 | 586-356-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ARMADA | MI |
| 2024-05-15 | 586-347-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ROSEVILLE | MI |
| 2024-05-15 | 586-347-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ROSEVILLE | MI |
| 2024-05-15 | 586-347-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ROSEVILLE | MI |
| 2024-05-15 | 586-360-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROSEVILLE | MI |
| 2024-05-09 | 586-366-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ARMADA | MI |
| 2024-05-09 | 586-366-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ARMADA | MI |
| 2024-05-09 | 586-588-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ARMADA | MI |
| 2024-05-07 | 586-351-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ROSEVILLE | MI |
| 2024-05-07 | 586-351-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ROSEVILLE | MI |
| 2024-05-07 | 586-351-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ROSEVILLE | MI |
| 2024-05-07 | 586-351-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ROSEVILLE | MI |
| 2024-05-07 | 586-351-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ROSEVILLE | MI |
| 2024-04-29 | 586-232-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WASHINGTON | MI |
| 2024-04-12 | 586-351-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ROSEVILLE | MI |
| 2024-04-12 | 586-351-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ROSEVILLE | MI |
| 2024-04-12 | 586-351-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ROSEVILLE | MI |
| 2024-04-12 | 586-351-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ROSEVILLE | MI |
| 2024-04-10 | 586-223-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MT CLEMENS | MI |
| 2024-04-10 | 586-223-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MT CLEMENS | MI |
| 2024-04-10 | 586-223-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MT CLEMENS | MI |
| 2024-03-11 | 586-496-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ROSEVILLE | MI |
| 2024-03-11 | 586-675-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ROSEVILLE | MI |
| 2024-02-22 | 586-366-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ARMADA | MI |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.