NumberResearchRecent thousands-block assignments
67 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, last 30 days — NPA 479
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2004-05-03 | 479-659-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROGERS | AR |
| 2004-04-16 | 479-717-4XXX | 4000–4999 | Assigned | AT&T - LOCAL | 7421 | SPRINGDALE | AR |
| 2004-03-04 | 479-221-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR | 7277 | FORT SMITH | AR |
| 2003-11-14 | 479-599-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SILOAM SPG | AR |
| 2003-11-14 | 479-774-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | CLARKSVL | AR |
| 2003-10-14 | 479-774-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CLARKSVL | AR |
| 2003-10-14 | 479-774-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CLARKSVL | AR |
| 2003-09-24 | 479-234-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MENA | AR |
| 2003-09-24 | 479-234-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MENA | AR |
| 2003-04-21 | 479-220-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SILOAM SPG | 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.