NumberResearchRecent thousands-block assignments
4,069 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 10/11/2026
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
New assignments by month
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Quick find in this area code:
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-07-17 | 313-764-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DETROITZN6 | MI |
| 2024-07-17 | 315-557-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | CLINTON | NY |
| 2024-07-17 | 315-582-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | GOUVERNEUR | NY |
| 2024-07-17 | 315-613-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | DOLGEVILLE | NY |
| 2024-07-17 | 315-618-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | LITTLE FLS | NY |
| 2024-07-17 | 315-631-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | CAMILLUS | NY |
| 2024-07-17 | 315-645-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | COPENHAGEN | NY |
| 2024-07-17 | 315-650-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | CLAYTON | NY |
| 2024-07-17 | 315-716-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | GENEVA | NY |
| 2024-07-17 | 315-803-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | LA FARGEVL | NY |
| 2024-07-17 | 315-919-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | LYONS | NY |
| 2024-07-17 | 315-974-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | CAMDEN | NY |
| 2024-07-17 | 315-989-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | NORFOLK | NY |
| 2024-07-17 | 315-990-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | HEUVELTON | NY |
| 2024-07-17 | 319-245-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | GRUNDY CTR | IA |
| 2024-07-17 | 319-280-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | KEOSAUQUA | IA |
| 2024-07-17 | 319-324-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | BRIGHTON | IA |
| 2024-07-17 | 319-495-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LAPORTE CY | IA |
| 2024-07-17 | 319-619-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | MONTROSE | IA |
| 2024-07-17 | 319-674-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | WELLMAN | IA |
| 2024-07-17 | 319-709-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | WINTHROP | IA |
| 2024-07-17 | 319-733-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | FARMINGTON | IA |
| 2024-07-17 | 319-839-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | MARENGO | IA |
| 2024-07-17 | 319-839-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | MARENGO | IA |
| 2024-07-17 | 346-709-0XXX | 0000–0999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | LEAGUECITY | TX |
| 2024-07-17 | 346-709-8XXX | 8000–8999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | LEAGUECITY | TX |
| 2024-07-17 | 346-792-1XXX | 1000–1999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | LANGHAMCRK | TX |
| 2024-07-17 | 346-792-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | LANGHAMCRK | TX |
| 2024-07-17 | 346-792-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | LANGHAMCRK | TX |
| 2024-07-17 | 352-935-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | GROVELAND | FL |
| 2024-07-17 | 352-935-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | GROVELAND | FL |
| 2024-07-17 | 435-354-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TOOELE | UT |
| 2024-07-17 | 448-214-0XXX | 0000–0999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | BLOUNTSTN | FL |
| 2024-07-17 | 448-235-2XXX | 2000–2999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | BONIFAY | FL |
| 2024-07-17 | 515-456-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | BANCROFT | IA |
| 2024-07-17 | 515-477-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SWEA CITY | IA |
| 2024-07-17 | 515-659-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | HUXLEY | IA |
| 2024-07-17 | 515-714-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | MADRID | IA |
| 2024-07-17 | 515-775-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | GRAND JCT | IA |
| 2024-07-17 | 518-568-1XXX | 1000–1999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | ST JOHNSVL | NY |
| 2024-07-17 | 518-627-8XXX | 8000–8999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | AMSTERDAM | NY |
| 2024-07-17 | 551-310-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NJ | 4804 | WESTWOOD | NJ |
| 2024-07-17 | 563-221-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | DE WITT | IA |
| 2024-07-17 | 563-228-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | BELLEVUE | IA |
| 2024-07-17 | 563-269-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | CASCADE | IA |
| 2024-07-17 | 563-269-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | CASCADE | IA |
| 2024-07-17 | 563-454-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | WYOMING | IA |
| 2024-07-17 | 563-465-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | FARLEY | IA |
| 2024-07-17 | 563-521-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | MAQUOKETA | IA |
| 2024-07-17 | 563-837-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | FREDECKSBG | IA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 10/11/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.