NumberResearchThousands-blocks in 909-303
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 909-303 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 909 blocks
Most active assignees, all time — NPA 909
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2012-06-07 | 909-303-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | UPLAND | CA |
| 2016-05-26 | 909-303-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | UPLAND | CA |
| 2012-10-16 | 909-303-2XXX | 2000–2999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | UPLAND | CA |
| 2013-03-19 | 909-303-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | UPLAND | CA |
| 2012-10-16 | 909-303-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | UPLAND | CA |
| 2022-03-17 | 909-303-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | UPLAND | CA |
| 2013-01-17 | 909-303-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | UPLAND | CA |
| 2012-03-13 | 909-303-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | UPLAND | CA |
| 2012-12-11 | 909-303-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | UPLAND | CA |
| 2013-02-14 | 909-303-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | UPLAND | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.