NumberResearchRecent thousands-block assignments
25 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 501
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 |
|---|---|---|---|---|---|---|---|
| 2024-02-20 | 501-646-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LITTLEROCK | AR |
| 2024-02-20 | 501-646-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LITTLEROCK | AR |
| 2024-02-16 | 501-367-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | PINNACLE | AR |
| 2024-02-16 | 501-380-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | SEARCY | AR |
| 2024-02-16 | 501-429-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | HEBER SPG | AR |
| 2024-02-16 | 501-437-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | LONOKE | AR |
| 2024-02-16 | 501-452-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | MORRILTON | AR |
| 2024-02-16 | 501-471-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | FERNDALE | AR |
| 2024-02-16 | 501-484-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | SPRINGLAKE | AR |
| 2024-02-16 | 501-493-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | CRYSTALSPG | AR |
| 2024-02-16 | 501-495-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | LONSDALE | AR |
| 2024-02-16 | 501-528-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | MALVERN | AR |
| 2024-02-16 | 501-531-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | HOTSPRINGS | AR |
| 2024-02-16 | 501-532-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | JESSIEVL | AR |
| 2024-02-16 | 501-536-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | CONWAY | AR |
| 2024-02-16 | 501-549-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | PALARM | AR |
| 2024-02-16 | 501-564-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | SYVNHLSHWD | AR |
| 2024-02-16 | 501-566-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | JONESMILLS | AR |
| 2024-02-16 | 501-770-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | WRIGHTSVL | AR |
| 2024-02-16 | 501-790-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | PARON | AR |
| 2024-02-16 | 501-832-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | GREERSFRRY | AR |
| 2024-02-16 | 501-942-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | SCOTT | AR |
| 2024-02-12 | 501-461-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | BAUXITE | AR |
| 2024-02-12 | 501-468-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | CLEVELAND | AR |
| 2024-02-12 | 501-491-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | BEEBE | AR |
| 2024-02-12 | 501-512-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | BRYANTCGVL | AR |
| 2024-02-12 | 501-559-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | BENTON | AR |
| 2024-02-12 | 501-567-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | CENTER RDG | AR |
| 2024-02-02 | 501-527-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LITTLEROCK | AR |
| 2024-02-01 | 501-331-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PERRYVILLE | AR |
| 2024-02-01 | 501-393-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PANGBURN | AR |
| 2024-02-01 | 501-419-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ROSE BUD | AR |
| 2024-02-01 | 501-427-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MAUMELLE | AR |
| 2024-02-01 | 501-432-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | NIMROD | AR |
| 2024-02-01 | 501-440-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SO FOURCHE | AR |
| 2024-02-01 | 501-460-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | GREENBRIER | AR |
| 2024-02-01 | 501-518-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DAMASCUS | AR |
| 2024-02-01 | 501-524-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | VILONIA | AR |
| 2024-02-01 | 501-571-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | WYE | AR |
| 2024-02-01 | 501-662-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PERRY | AR |
| 2024-02-01 | 501-755-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | QUITMAN | AR |
| 2024-02-01 | 501-849-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ENOLA | AR |
| 2024-02-01 | 501-870-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MORGANTON | AR |
| 2024-01-29 | 501-346-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | LITTLEROCK | AR |
| 2024-01-29 | 501-346-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | LITTLEROCK | AR |
| 2024-01-29 | 501-346-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | LITTLEROCK | AR |
| 2024-01-17 | 501-461-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BAUXITE | AR |
| 2024-01-17 | 501-462-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SEARCY | AR |
| 2024-01-09 | 501-559-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BENTON | AR |
| 2024-01-03 | 501-437-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LONOKE | AR |
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.