NumberResearchRecent thousands-block assignments
22 blocks assigned in May 2026 · 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, May 2026 — NPA 256
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-05-29 | 256-243-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | GUNTERSVL | AL |
| 2026-05-29 | 256-271-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | ROGERSVL | AL |
| 2026-05-29 | 256-356-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | RED BAY | AL |
| 2026-05-29 | 256-358-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | MUNFORD | AL |
| 2026-05-29 | 256-369-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | SYLACAUGA | AL |
| 2026-05-29 | 256-387-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | HARTSELLE | AL |
| 2026-05-29 | 256-467-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | GADSDEN | AL |
| 2026-05-29 | 256-521-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | TALLADEGA | AL |
| 2026-05-29 | 256-596-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | ALEXANDRCY | AL |
| 2026-05-29 | 256-664-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | KILLEN | AL |
| 2026-05-29 | 256-669-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | COURTLAND | AL |
| 2026-05-29 | 256-712-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | FLORENCE | AL |
| 2026-05-29 | 256-719-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | MOULTON | AL |
| 2026-05-29 | 256-789-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | LEXINGTON | AL |
| 2026-05-29 | 256-839-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | GOODWATER | AL |
| 2026-05-29 | 256-844-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | FORT PAYNE | AL |
| 2026-05-29 | 256-853-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | DADEVILLE | AL |
| 2026-05-29 | 256-873-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | ATTALLA | AL |
| 2026-05-29 | 256-902-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | RUSSELLVL | AL |
| 2026-05-08 | 256-814-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - AL | 072F | SHEFFIELD | AL |
| 2026-05-07 | 256-388-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - AL | 072F | ALBERTVL | AL |
| 2026-05-06 | 256-625-6XXX | 6000–6999 | Assigned | ONVOY, LLC - AL | 604E | ALEXANDRCY | AL |
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.