NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
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 |
|---|---|---|---|---|---|---|
| — | 775-851 | not yet reported which blocks → | NEVADA BELL | 9742 | RENO | NV |
| — | 775-852 | not yet reported which blocks → | NEVADA BELL | 9742 | RENO | NV |
| — | 775-853 | not yet reported which blocks → | NEVADA BELL | 9742 | RENO | NV |
| — | 775-856 | 8XXX9XXX · 2 holders which blocks → | NEVADA BELL | 9742 | RENO | NV |
| — | 775-857 | 0XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | NEVADA BELL | 9742 | RENO | NV |
| — | 775-858 | not yet reported which blocks → | NEVADA BELL | 9742 | RENO | NV |
| — | 775-861 | not yet reported which blocks → | NEVADA BELL | 9742 | RENO | NV |
| — | 775-863 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | NEVADA BELL | 9742 | DCKWTRCRNT | NV |
| — | 775-881 | 8XXX which blocks → | NEVADA BELL | 9742 | CARSONCITY | NV |
| — | 775-882 | not yet reported which blocks → | NEVADA BELL | 9742 | CARSONCITY | NV |
| — | 775-883 | not yet reported which blocks → | NEVADA BELL | 9742 | CARSONCITY | NV |
| — | 775-884 | not yet reported which blocks → | NEVADA BELL | 9742 | CARSONCITY | NV |
| — | 775-885 | not yet reported which blocks → | NEVADA BELL | 9742 | CARSONCITY | NV |
| — | 775-886 | not yet reported which blocks → | NEVADA BELL | 9742 | CARSONCITY | NV |
| — | 775-887 | not yet reported which blocks → | NEVADA BELL | 9742 | CARSONCITY | NV |
| — | 775-888 | not yet reported which blocks → | NEVADA BELL | 9742 | CARSONCITY | NV |
| — | 775-945 | 6XXX8XXX · 2 holders which blocks → | NEVADA BELL | 9742 | HAWTHORNE | NV |
| — | 775-964 | 0XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | NEVADA BELL | 9742 | AUSTIN | NV |
| — | 775-971 | 4XXX7XXX8XXX · 2 holders which blocks → | NEVADA BELL | 9742 | RENO | NV |
| — | 775-972 | not yet reported which blocks → | NEVADA BELL | 9742 | RENO | NV |
| — | 775-982 | not yet reported which blocks → | NEVADA BELL | 9742 | RENO | NV |
| — | 775-999 | not yet reported which blocks → | NEVADA BELL | 9742 | RENO | NV |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.