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 |
|---|---|---|---|---|---|---|
| — | 747-465 | 0–9 XXXall 10 · 2 holders which blocks → | METROPCS NETWORKS, LLC | 899D | VAN NUYS | CA |
| — | 747-477 | 0–9 XXXall 10 · 7 holders which blocks → | ONVOY, LLC - CA | 649C | BRBN BRBN | CA |
| — | 747-500 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - CA | 649C | SNFN SNFN | CA |
| — | 747-511 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | CA | |
| — | 747-529 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - CA | 649C | SNFN SPLV | CA |
| — | 747-555 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | DIR ASST | CA |
| — | 747-600 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - CA | 649C | SNFN GRHL | CA |
| — | 747-611 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | CA | |
| — | 747-666 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY, LLC - CA | 649C | AGOURA | CA |
| — | 747-700 | not yet reported which blocks → | CA | |||
| — | 747-711 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | CA | |
| — | 747-737 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - CA | 649C | PSDN LACN | CA |
| — | 747-777 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - CA | 981E | CANOGAPARK | CA |
| — | 747-800 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC - CA | 649C | CANOGAPARK | CA |
| — | 747-811 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | CA | |
| — | 747-853 | not yet reported which blocks → | CA | |||
| — | 747-888 | 0–9 XXXall 10 · 7 holders which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | CANOGAPARK | CA |
| — | 747-895 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - CA | 649C | LACRSCENTA | CA |
| — | 747-900 | 0–9 XXXall 10 · 6 holders which blocks → | ONVOY, LLC - CA | 649C | CANOGAPARK | CA |
| — | 747-911 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | CA | |
| — | 747-950 | not yet reported which blocks → | CA | |||
| — | 747-958 | not yet reported which blocks → | CA | |||
| — | 747-959 | not yet reported which blocks → | CA | |||
| — | 747-976 | not yet reported which blocks → | CA | |||
| — | 747-999 | 0–9 XXXall 10 · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNFN SNFN | 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.