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 |
|---|---|---|---|---|---|---|
| 2002-04-25 | 662-577 | 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | INDIANOLA | MS |
| 2002-04-25 | 662-612 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | SENATOBIA | MS |
| 2002-04-25 | 662-633 | 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | KOSCIUSKO | MS |
| 2002-04-25 | 662-640 | 1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | AMORY | MS |
| 2002-04-25 | 662-845 | 0XXX3XXX5XXX6XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | WINONA | MS |
| 2002-02-21 | 662-483 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | CLARKSDALE | MS |
| 2002-01-28 | 662-540 | 0XXX1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | MTPLEASANT | MS |
| 2001-11-30 | 662-579 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | CLEVELAND | MS |
| 2001-11-30 | 662-590 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | YAZOO CITY | MS |
| 2001-08-10 | 662-520 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | GRENADA | MS |
| 2001-07-17 | 662-450 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | LEXINGTON | MS |
| — | 662-268 | 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | STARKVILLE | MS |
| — | 662-269 | 2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | TUPELO | MS |
| — | 662-318 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | BELZONI | MS |
| — | 662-533 | not yet reported which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | OXFORD | MS |
| — | 662-600 | 0XXX1XXX2XXX6XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | CALHOUN CY | MS |
| — | 662-731 | 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | DUCK HILL | MS |
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.