NumberResearchThousands-blocks in 479-317
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 479-317 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 479 blocks
Most active assignees, all time — NPA 479
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-07-26 | 479-317-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | RUSSELLVL | AR |
| 2016-07-26 | 479-317-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | RUSSELLVL | AR |
| 2016-07-26 | 479-317-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | RUSSELLVL | AR |
| 2020-11-09 | 479-317-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | RUSSELLVL | AR |
| 2020-11-09 | 479-317-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | RUSSELLVL | AR |
| 2020-11-09 | 479-317-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | RUSSELLVL | AR |
| 2022-09-06 | 479-317-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - AR | 802C | RUSSELLVL | AR |
| 2014-04-18 | 479-317-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | RUSSELLVL | AR |
| 2023-05-01 | 479-317-8XXX | 8000–8999 | Assigned | ONVOY, LLC - AR | 348F | RUSSELLVL | AR |
| 2025-03-13 | 479-317-9XXX | 9000–9999 | Assigned | ONVOY, LLC - AR | 348F | RUSSELLVL | 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.