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.
Most active assignees, all time — NPA 208
New assignments by month
Sep 2026
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 208-366 | 0XXX1XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | QWEST CORPORATION | 9636 | MT HOME | ID |
| — | 208-367 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-368 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-373 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-375 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-376 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-377 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-378 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-381 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-383 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-384 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-385 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-386 | 0XXX which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-387 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-388 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-389 | 8XXX which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-392 | 0XXX1XXX2XXX3XXX5XXX7XXX8XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-393 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-395 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-396 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-398 | 0XXX2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → | QWEST CORPORATION | 9636 | EMMETT | ID |
| — | 208-422 | 4XXX7XXX which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-423 | 0XXX1XXX2XXX3XXX7XXX8XXX · 2 holders which blocks → | QWEST CORPORATION | 9636 | TWIN FALLS | ID |
| — | 208-424 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-425 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-426 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-427 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-429 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-432 | 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | MURTAUGH | ID |
| — | 208-433 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-442 | not yet reported which blocks → | QWEST CORPORATION | 9636 | NAMPA | ID |
| — | 208-453 | 6XXX7XXX · 2 holders which blocks → | QWEST CORPORATION | 9636 | CALDWELL | ID |
| — | 208-454 | not yet reported which blocks → | QWEST CORPORATION | 9636 | CALDWELL | ID |
| — | 208-455 | not yet reported which blocks → | QWEST CORPORATION | 9636 | CALDWELL | ID |
| — | 208-459 | not yet reported which blocks → | QWEST CORPORATION | 9636 | CALDWELL | ID |
| — | 208-461 | not yet reported which blocks → | QWEST CORPORATION | 9636 | NAMPA | ID |
| — | 208-463 | not yet reported which blocks → | QWEST CORPORATION | 9636 | NAMPA | ID |
| — | 208-465 | not yet reported which blocks → | QWEST CORPORATION | 9636 | NAMPA | ID |
| — | 208-466 | not yet reported which blocks → | QWEST CORPORATION | 9636 | NAMPA | ID |
| — | 208-467 | not yet reported which blocks → | QWEST CORPORATION | 9636 | NAMPA | ID |
| — | 208-468 | not yet reported which blocks → | QWEST CORPORATION | 9636 | NAMPA | ID |
| — | 208-477 | 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | EMMETT | ID |
| — | 208-478 | not yet reported which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-495 | 0XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → | QWEST CORPORATION | 9636 | MELBA | ID |
| — | 208-522 | not yet reported which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-523 | not yet reported which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-524 | not yet reported which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-525 | not yet reported which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-526 | not yet reported which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-528 | not yet reported which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
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.