NumberResearchThousands-blocks in 503-902
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 503-902 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 503 blocks
Most active assignees, all time — NPA 503
New assignments by month
Sep 2026
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Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2009-06-04 | 503-902-0XXX | 0000–0999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | WOODBURN | OR |
| 2010-01-22 | 503-902-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - OR | 076F | WOODBURN | OR |
| 2010-01-25 | 503-902-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | WOODBURN | OR |
| 2009-11-19 | 503-902-3XXX | 3000–3999 | Assigned | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 7172 | WOODBURN | OR |
| 2010-08-05 | 503-902-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - OR | 076F | WOODBURN | OR |
| 2011-06-08 | 503-902-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - OR | 076F | WOODBURN | OR |
| 2011-08-01 | 503-902-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - OR | 076F | WOODBURN | OR |
| 2010-07-15 | 503-902-7XXX | 7000–7999 | Assigned | ONVOY, LLC - OR | 750E | WOODBURN | OR |
| 2014-03-04 | 503-902-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | WOODBURN | OR |
| 2012-08-27 | 503-902-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - OR | 076F | WOODBURN | OR |
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.