NumberResearchThousands-blocks in 424-264
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 424-264 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 424 blocks
Most active assignees, all time — NPA 424
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2006-05-18 | 424-264-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SAN PEDRO | CA |
| 2012-12-10 | 424-264-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | SAN PEDRO | CA |
| 2013-10-11 | 424-264-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SAN PEDRO | CA |
| 2007-12-07 | 424-264-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2009-01-09 | 424-264-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | SAN PEDRO | CA |
| 2006-03-23 | 424-264-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SAN PEDRO | CA |
| 2007-12-07 | 424-264-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2009-01-09 | 424-264-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | SAN PEDRO | CA |
| 2008-07-23 | 424-264-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | SAN PEDRO | CA |
| 2009-09-03 | 424-264-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SAN PEDRO | 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.