NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026
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 |
|---|---|---|---|---|---|---|
| 2002-09-20 | 775-341 | 1XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | MATRIX TELECOM, LLC. S/I/I TNCI - NV | 2817 | HAWTHORNE | NV |
| 2002-04-10 | 775-313 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → | MATRIX TELECOM, LLC. S/I/I TNCI - NV | 2817 | RENO | NV |
| 2001-10-30 | 775-297 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | MATRIX TELECOM, LLC. S/I/I TNCI - NV | 2817 | CARSONCITY | NV |
| — | 775-201 | not yet reported which blocks → | MATRIX TELECOM, LLC. S/I/I TNCI - NV | 2817 | RENO | NV |
| — | 775-546 | 1XXX2XXX3XXX5XXX7XXX8XXX · 3 holders which blocks → | MATRIX TELECOM, LLC. S/I/I TNCI - NV | 2817 | CARSONCITY | NV |
| — | 775-549 | 2XXX5XXX6XXX7XXX · 3 holders which blocks → | MATRIX TELECOM, LLC. S/I/I TNCI - NV | 2817 | ELY | NV |
| — | 775-552 | 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | MATRIX TELECOM, LLC. S/I/I TNCI - NV | 2817 | GARDNERVL | NV |
| — | 775-562 | not yet reported which blocks → | MATRIX TELECOM, LLC. S/I/I TNCI - NV | 2817 | RENO | NV |
| — | 775-582 | not yet reported which blocks → | MATRIX TELECOM, LLC. S/I/I TNCI - NV | 2817 | PAHRUMP | NV |
| — | 775-621 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | MATRIX TELECOM, LLC. S/I/I TNCI - NV | 2817 | WINNEMUCCA | NV |
| — | 775-980 | 1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | MATRIX TELECOM, LLC. S/I/I TNCI - NV | 2817 | FERNLEY | NV |
| — | 775-983 | 1XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | MATRIX TELECOM, LLC. S/I/I TNCI - NV | 2817 | BAKER | NV |
| — | 775-996 | not yet reported which blocks → | MATRIX TELECOM, LLC. S/I/I TNCI - NV | 2817 | RENO | NV |
| — | 775-997 | 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | MATRIX TELECOM, LLC. S/I/I TNCI - NV | 2817 | RENO | NV |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.