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 |
|---|---|---|---|---|---|---|
| 2007-01-16 | 228-215 | 0–9 XXXall 10 · 5 holders which blocks → | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | 6916 | OCEAN SPG | MS |
| 2003-03-20 | 228-254 | 1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 6 holders which blocks → | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | 6916 | PASSCHRSTN | MS |
| 2002-09-06 | 228-235 | not yet reported which blocks → | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | 6916 | OCEAN SPG | MS |
| — | 228-313 | not yet reported which blocks → | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | 6916 | GULFPORT | MS |
| — | 228-343 | none assigned yet which blocks → | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | 6916 | GULFPORT | MS |
| — | 228-382 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | 6916 | OCEAN SPG | MS |
| — | 228-383 | not yet reported which blocks → | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | 6916 | GULFPORT | MS |
| — | 228-437 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | 6916 | GULFPORT | MS |
| — | 228-547 | none assigned yet which blocks → | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | 6916 | GULFPORT | MS |
| — | 228-617 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | 6916 | GULFPORT | MS |
| — | 228-918 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | 6916 | GULFPORT | 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.