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 |
|---|---|---|---|---|---|---|---|
| 2026-05-27 | 313-941-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-05-27 | 313-941-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-05-27 | 313-941-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-05-27 | 313-941-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-05-27 | 313-941-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-05-27 | 313-941-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-05-27 | 313-941-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-04-01 | 313-853-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-04-01 | 313-853-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-04-01 | 313-853-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-04-01 | 313-853-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-04-01 | 313-853-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-04-01 | 313-860-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2026-04-01 | 313-860-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2026-04-01 | 313-860-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2026-04-01 | 313-860-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2026-04-01 | 313-860-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2026-04-01 | 313-860-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2026-04-01 | 313-904-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-04-01 | 313-904-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-04-01 | 313-904-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-04-01 | 313-904-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-04-01 | 313-907-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2026-04-01 | 313-907-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2026-04-01 | 313-907-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2026-04-01 | 313-907-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2026-04-01 | 313-907-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2026-03-05 | 313-449-0XXX | 0000–0999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | DETROITZN2 | MI |
| 2026-03-05 | 313-825-0XXX | 0000–0999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | DETROITZN2 | MI |
| 2026-03-05 | 313-825-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | DETROITZN2 | MI |
| 2026-02-04 | 313-313-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-02-04 | 313-313-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-02-04 | 313-313-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-02-04 | 313-313-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-02-04 | 313-313-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-02-04 | 313-313-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-02-04 | 313-313-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-02-04 | 313-313-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-02-04 | 313-313-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-02-04 | 313-615-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-02-04 | 313-615-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-02-04 | 313-847-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2026-02-04 | 313-847-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2026-02-04 | 313-847-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2026-02-04 | 313-847-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2026-02-04 | 313-847-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN5 | MI |
| 2026-02-04 | 313-853-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-02-04 | 313-853-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-02-04 | 313-853-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2026-02-04 | 313-853-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | 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.