NumberResearchRecent prefix assignments
2 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 424-555 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | DIR ASST | CA |
| — | 424-567 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - CA | 649C | HAWTHORNE | CA |
| — | 424-600 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - CA | 649C | BEVERLYHLS | CA |
| — | 424-611 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CA |
| — | 424-652 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | W ANGELES | CA |
| — | 424-666 | 0–9 XXXall 10 · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - CA | 981E | BEVERLYHLS | CA |
| — | 424-672 | 0–9 XXXall 10 · 7 holders which blocks → | ONVOY, LLC - CA | 649C | CULVERCITY | CA |
| — | 424-700 | not yet reported which blocks → | CA | |||
| — | 424-702 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS NETWORKS, LLC | 899D | INGLEWOOD | CA |
| — | 424-707 | not yet reported which blocks → | CA | |||
| — | 424-711 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CA |
| — | 424-732 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - CA | 649C | INGLEWOOD | CA |
| — | 424-757 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - CA | 981E | TORRANCE | CA |
| — | 424-772 | 0–9 XXXall 10 · 7 holders which blocks → | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SAN PEDRO | CA |
| — | 424-777 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - CA | 981E | BEVERLYHLS | CA |
| — | 424-800 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - CA | 649C | INGLEWOOD | CA |
| — | 424-811 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CA |
| — | 424-888 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - CA | 649C | INGLEWOOD | CA |
| — | 424-900 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - CA | 649C | W ANGELES | CA |
| — | 424-911 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CA |
| — | 424-950 | not yet reported which blocks → | CA | |||
| — | 424-958 | not yet reported which blocks → | CA | |||
| — | 424-959 | not yet reported which blocks → | CA | |||
| — | 424-976 | not yet reported which blocks → | CA | |||
| — | 424-999 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - CA | 649C | TORRANCE | CA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.