NumberResearchThousands-blocks in 559-633
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 559-633 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 559 blocks
Most active assignees, all time — NPA 559
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2004-05-19 | 559-633-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LEMOORE | CA |
| 2009-11-06 | 559-633-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | LEMOORE | CA |
| 2024-01-16 | 559-633-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LEMOORE | CA |
| 2015-01-14 | 559-633-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LEMOORE | CA |
| — | 559-633-4XXX | 4000–4999 | Reserved | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | LEMOORE | CA |
| 2007-08-08 | 559-633-5XXX | 5000–5999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LEMOORE | CA |
| 2016-06-21 | 559-633-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LEMOORE | CA |
| 2017-03-14 | 559-633-7XXX | 7000–7999 | Assigned | TELNYX LLC | 073H | LEMOORE | CA |
| 2010-01-15 | 559-633-8XXX | 8000–8999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | LEMOORE | CA |
| 2014-06-19 | 559-633-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LEMOORE | 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.