NumberResearchRecent thousands-block assignments
0 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, all time — NPA 870
New assignments by month
Sep 2026
Aug 2026
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Apr 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-06-15 | 870-846-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | ASHDOWN | AR |
| 2026-06-15 | 870-846-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | ASHDOWN | AR |
| 2026-06-15 | 870-923-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | BLYTHEVL | AR |
| 2026-06-15 | 870-923-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | BLYTHEVL | AR |
| 2026-06-15 | 870-977-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | BLACKFIHLK | AR |
| 2026-06-15 | 870-977-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | BLACKFIHLK | AR |
| 2026-06-15 | 870-989-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | BLACK ROCK | AR |
| 2026-06-15 | 870-989-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | BLACK ROCK | AR |
| 2026-06-12 | 870-568-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | ARKADLPHIA | AR |
| 2026-06-12 | 870-568-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | ARKADLPHIA | AR |
| 2024-07-26 | 870-870-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | PINE BLUFF | AR |
| 2024-03-04 | 870-264-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | OIL TROUGH | AR |
| 2024-03-04 | 870-271-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | HARRISBURG | AR |
| 2024-03-04 | 870-272-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | TURRELL | AR |
| 2024-03-04 | 870-298-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | MARIANNA | AR |
| 2024-03-04 | 870-394-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | W MEMPHIS | AR |
| 2024-03-04 | 870-397-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | HOPE | AR |
| 2024-03-04 | 870-410-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | WILSON | AR |
| 2024-03-04 | 870-472-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | NASHVILLE | AR |
| 2024-03-04 | 870-495-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | NEWPORT | AR |
| 2024-03-04 | 870-549-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | OSCEOLA | AR |
| 2024-03-04 | 870-604-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | JONESBORO | AR |
| 2024-03-04 | 870-637-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | WALNUT RDG | AR |
| 2024-03-04 | 870-658-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | LUXORA | AR |
| 2024-03-04 | 870-697-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | HICKORYRDG | AR |
| 2024-03-04 | 870-709-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | GURDON | AR |
| 2024-03-04 | 870-744-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | TUPELO | AR |
| 2024-03-04 | 870-745-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | FORREST CY | AR |
| 2024-03-04 | 870-755-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | PARKIN | AR |
| 2024-03-04 | 870-768-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | MORO | AR |
| 2024-03-04 | 870-787-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | PARAGOULD | AR |
| 2024-03-04 | 870-839-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | MARION | AR |
| 2024-03-04 | 870-889-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | HUGHES | AR |
| 2024-03-04 | 870-891-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | NEWARK | AR |
| 2024-03-04 | 870-980-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | GRUBBS | AR |
| 2024-03-01 | 870-244-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | EARLE | AR |
| 2024-02-29 | 870-442-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | CHERRY VLY | AR |
| 2024-02-29 | 870-493-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | DELL | AR |
| 2024-02-29 | 870-823-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | CRAWFODSVL | AR |
| 2024-02-29 | 870-928-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | CAVE CITY | AR |
| 2024-02-29 | 870-967-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | CONCORD | AR |
| 2024-02-28 | 870-963-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | HELENA | AR |
| 2024-02-28 | 870-964-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | JOINER | AR |
| 2024-02-28 | 870-968-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | WYNNE | AR |
| 2024-02-16 | 870-527-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | BRINKLEY | AR |
| 2024-02-16 | 870-806-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | BATESVILLE | AR |
| 2024-02-16 | 870-813-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | BODCAW | AR |
| 2024-02-16 | 870-846-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | ASHDOWN | AR |
| 2024-02-16 | 870-868-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | ARKADLPHIA | AR |
| 2024-02-16 | 870-923-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | BLYTHEVL | AR |
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.