NumberResearchRecent thousands-block assignments
6 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 313
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-01-04 | 313-210-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN1 | MI |
| 2024-01-04 | 313-210-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN1 | MI |
| 2024-01-04 | 313-210-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN1 | MI |
| 2024-01-04 | 313-210-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN1 | MI |
| 2024-01-04 | 313-210-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN1 | MI |
| 2024-01-04 | 313-519-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN3 | MI |
| 2024-01-04 | 313-519-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN3 | MI |
| 2024-01-04 | 313-519-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN3 | MI |
| 2024-01-04 | 313-519-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN3 | MI |
| 2024-01-04 | 313-589-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2024-01-04 | 313-589-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2024-01-04 | 313-604-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN1 | MI |
| 2024-01-04 | 313-604-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN1 | MI |
| 2023-12-04 | 313-607-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2023-12-04 | 313-607-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2023-12-04 | 313-607-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2023-12-04 | 313-607-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2023-12-04 | 313-607-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2023-12-04 | 313-607-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2023-11-29 | 313-439-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2023-11-29 | 313-439-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2023-11-29 | 313-439-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2023-11-29 | 313-439-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2023-11-29 | 313-439-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2023-11-29 | 313-439-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2023-11-29 | 313-439-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2023-11-29 | 313-439-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2023-11-29 | 313-439-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2023-11-17 | 313-261-1XXX | 1000–1999 | Assigned | NUSO, LLC | 478J | DETROITZN1 | MI |
| 2023-11-17 | 313-872-8XXX | 8000–8999 | Assigned | NUSO, LLC | 478J | DETROITZN1 | MI |
| 2023-11-16 | 313-519-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN3 | MI |
| 2023-11-16 | 313-519-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN3 | MI |
| 2023-11-16 | 313-589-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2023-11-16 | 313-589-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2023-11-16 | 313-589-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2023-11-15 | 313-431-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2023-11-15 | 313-431-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2023-11-07 | 313-439-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2023-11-06 | 313-859-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2023-11-06 | 313-952-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2023-10-11 | 313-431-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2023-10-11 | 313-431-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2023-10-11 | 313-431-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2023-10-11 | 313-431-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2023-10-03 | 313-435-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2023-10-03 | 313-435-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2023-10-03 | 313-583-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2023-09-27 | 313-431-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2023-09-27 | 313-431-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2023-09-27 | 313-698-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN3 | 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.