NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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 479
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-05-28 | 479-302-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | SPRINGDALE | AR |
| 2026-05-28 | 479-323-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | GRAVETTE | AR |
| 2026-05-28 | 479-523-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | EUREKA SPG | AR |
| 2026-05-28 | 479-596-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | BENTONVL | AR |
| 2026-05-28 | 479-598-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | FAYETTEVL | AR |
| 2026-05-28 | 479-602-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | NATURALDAM | AR |
| 2026-05-28 | 479-603-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | ROGERS | AR |
| 2026-05-28 | 479-749-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | HINDSVILLE | AR |
| 2026-05-21 | 479-590-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | FORT SMITH | AR |
| 2026-05-21 | 479-590-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | FORT SMITH | AR |
| 2026-05-21 | 479-594-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | MENA | AR |
| 2026-05-21 | 479-594-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | MENA | AR |
| 2024-07-26 | 479-546-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | FORT SMITH | AR |
| 2024-02-12 | 479-588-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | MENA | AR |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.