NumberResearchRecent prefix assignments
0 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 |
|---|---|---|---|---|---|---|
| 2016-06-29 | 337-612 | 0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 5 holders which blocks → | LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. | 4930 | IOTA | LA |
| 2016-06-29 | 337-614 | 0XXX1XXX2XXX4XXX5XXX6XXX · 4 holders which blocks → | LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. | 4930 | CANKTON | LA |
| — | 337-740 | not yet reported which blocks → | LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. | 4930 | ABBEVILLE | LA |
| — | 337-782 | not yet reported which blocks → | LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. | 4930 | CROWLEY | LA |
| — | 337-830 | not yet reported which blocks → | LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. | 4930 | GUEYDAN | LA |
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.