NumberResearchRecent thousands-block assignments
6 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 313
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 |
|---|---|---|---|---|---|---|---|
| 2025-03-27 | 313-501-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2025-03-27 | 313-741-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2025-03-27 | 313-768-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2025-03-27 | 313-781-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2025-03-27 | 313-810-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2025-03-27 | 313-810-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2025-03-27 | 313-810-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2025-03-27 | 313-810-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2025-03-27 | 313-810-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2025-03-06 | 313-734-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | DETROITZN1 | MI |
| 2025-03-06 | 313-734-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | DETROITZN1 | MI |
| 2025-03-06 | 313-734-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | DETROITZN1 | MI |
| 2025-03-06 | 313-734-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | DETROITZN1 | MI |
| 2025-03-06 | 313-810-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | DETROITZN5 | MI |
| 2025-03-06 | 313-810-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | DETROITZN5 | MI |
| 2025-03-06 | 313-810-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | DETROITZN5 | MI |
| 2025-02-25 | 313-339-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2025-02-25 | 313-339-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2025-02-25 | 313-339-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2025-02-25 | 313-339-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2025-02-25 | 313-339-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2025-02-10 | 313-781-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2025-02-10 | 313-781-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2025-02-10 | 313-781-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2025-01-13 | 313-301-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2025-01-13 | 313-301-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2025-01-13 | 313-301-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2025-01-13 | 313-301-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2025-01-13 | 313-301-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2025-01-13 | 313-339-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2025-01-13 | 313-339-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2025-01-13 | 313-339-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2025-01-13 | 313-339-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2025-01-13 | 313-339-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2025-01-03 | 313-301-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2025-01-03 | 313-301-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2025-01-03 | 313-301-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2025-01-03 | 313-301-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2025-01-03 | 313-301-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2024-12-18 | 313-281-3XXX | 3000–3999 | Assigned | ONVOY, LLCV - MI | 543C | DETROITZN3 | MI |
| 2024-12-18 | 313-281-7XXX | 7000–7999 | Assigned | ONVOY, LLCV - MI | 543C | DETROITZN3 | MI |
| 2024-12-18 | 313-346-4XXX | 4000–4999 | Assigned | ONVOY, LLCV - MI | 543C | DETROITZN3 | MI |
| 2024-12-18 | 313-738-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2024-12-18 | 313-738-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2024-12-03 | 313-229-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2024-12-03 | 313-759-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2024-12-03 | 313-759-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | DETROITZN5 | MI |
| 2024-12-02 | 313-559-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2024-12-02 | 313-607-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2024-12-02 | 313-703-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | 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.