NumberResearchRecent thousands-block assignments
2 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 |
|---|---|---|---|---|---|---|---|
| 2026-09-14 | 586-486-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CENTERLINE | MI |
| 2026-09-11 | 586-587-7XXX | 7000–7999 | Assigned | INTRADO COMMUNICATIONS, LLC | 821C | MT CLEMENS | MI |
| 2026-07-24 | 586-273-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF MICHIGAN, LLC - MI | 933G | NEWBALTIMR | MI |
| 2026-07-21 | 586-379-7XXX | 7000–7999 | Assigned | EXIANT COMMUNICATIONS LLC | 114J | ARMADA | MI |
| 2026-07-01 | 586-544-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | UTICA | MI |
| 2026-07-01 | 586-587-8XXX | 8000–8999 | Assigned | OPENTACT INC. | 824J | MT CLEMENS | MI |
| 2026-06-10 | 586-933-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WARREN | MI |
| 2026-06-03 | 586-888-7XXX | 7000–7999 | Assigned | AHOI LLC | 883K | ROSEVILLE | MI |
| 2026-05-29 | 586-379-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ARMADA | MI |
| 2026-05-15 | 586-341-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROMEO | MI |
| 2026-05-11 | 586-802-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | UTICA | MI |
| 2026-03-25 | 586-288-2XXX | 2000–2999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | MT CLEMENS | MI |
| 2026-03-25 | 586-355-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF MICHIGAN, LLC - MI | 933G | RICHMOND | MI |
| 2026-03-05 | 586-281-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ROMEO | MI |
| 2026-03-04 | 586-346-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | UTICA | MI |
| 2026-03-03 | 586-258-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | WARREN | MI |
| 2026-03-03 | 586-715-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MT CLEMENS | MI |
| 2026-03-03 | 586-715-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MT CLEMENS | MI |
| 2026-02-11 | 586-369-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ARMADA | MI |
| 2026-02-05 | 586-351-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROSEVILLE | MI |
| 2026-02-05 | 586-364-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROSEVILLE | MI |
| 2026-02-05 | 586-364-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROSEVILLE | MI |
| 2026-02-05 | 586-364-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROSEVILLE | MI |
| 2026-02-03 | 586-364-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROSEVILLE | MI |
| 2026-02-03 | 586-364-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROSEVILLE | MI |
| 2026-02-03 | 586-364-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROSEVILLE | MI |
| 2026-02-03 | 586-735-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MT CLEMENS | MI |
| 2026-02-03 | 586-735-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MT CLEMENS | MI |
| 2026-01-30 | 586-369-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ARMADA | MI |
| 2026-01-15 | 586-735-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MT CLEMENS | MI |
| 2025-11-24 | 586-364-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROSEVILLE | MI |
| 2025-11-18 | 586-368-7XXX | 7000–7999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WARREN | MI |
| 2025-11-18 | 586-368-8XXX | 8000–8999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WARREN | MI |
| 2025-10-30 | 586-367-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CENTERLINE | MI |
| 2025-10-30 | 586-367-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CENTERLINE | MI |
| 2025-10-30 | 586-367-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CENTERLINE | MI |
| 2025-10-30 | 586-888-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ROSEVILLE | MI |
| 2025-10-22 | 586-346-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | UTICA | MI |
| 2025-10-15 | 586-364-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROSEVILLE | MI |
| 2025-10-13 | 586-223-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MT CLEMENS | MI |
| 2025-10-13 | 586-223-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MT CLEMENS | MI |
| 2025-10-06 | 586-744-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WARREN | MI |
| 2025-09-24 | 586-369-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ARMADA | MI |
| 2025-09-10 | 586-367-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CENTERLINE | MI |
| 2025-09-10 | 586-935-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WASHINGTON | MI |
| 2025-09-05 | 586-540-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROMEO | MI |
| 2025-08-28 | 586-625-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ARMADA | MI |
| 2025-08-28 | 586-625-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ARMADA | MI |
| 2025-08-07 | 586-455-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ARMADA | MI |
| 2025-08-04 | 586-270-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NEW HAVEN | MI |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.