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
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 208-529 | not yet reported which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-533 | not yet reported which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-534 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-535 | not yet reported which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-536 | 0XXX3XXX7XXX8XXX · 4 holders which blocks → | QWEST CORPORATION | 9636 | TWIN FALLS | ID |
| — | 208-537 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | TWIN FALLS | ID |
| — | 208-538 | 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 5 holders which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-542 | not yet reported which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-543 | 1XXX3XXX7XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | TWIN FALLS | ID |
| — | 208-544 | 0XXX1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → | QWEST CORPORATION | 9636 | TWIN FALLS | ID |
| — | 208-547 | 5XXX6XXX8XXX · 2 holders which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-549 | 5XXX6XXX7XXX9XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | WEISER | ID |
| — | 208-552 | not yet reported which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-557 | 1XXX3XXX4XXX8XXX9XXX which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-562 | 2XXX3XXX4XXX7XXX9XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-578 | 4XXX6XXX · 2 holders which blocks → | QWEST CORPORATION | 9636 | KETCHUM | ID |
| — | 208-580 | 3XXX4XXX7XXX8XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | MT HOME | ID |
| — | 208-585 | 1XXX4XXX7XXX8XXX · 2 holders which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-587 | not yet reported which blocks → | QWEST CORPORATION | 9636 | MT HOME | ID |
| — | 208-622 | not yet reported which blocks → | QWEST CORPORATION | 9636 | KETCHUM | ID |
| — | 208-637 | 3XXX4XXX5XXX7XXX9XXX · 4 holders which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-642 | not yet reported which blocks → | QWEST CORPORATION | 9636 | PAYETTE | ID |
| — | 208-644 | 0XXX3XXX4XXX5XXX7XXX8XXX · 6 holders which blocks → | QWEST CORPORATION | 9636 | TWIN FALLS | ID |
| — | 208-646 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-648 | 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-654 | 0XXX1XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | QWEST CORPORATION | 9636 | BURLEY | ID |
| — | 208-656 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-658 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-672 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-677 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BURLEY | ID |
| — | 208-678 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BURLEY | ID |
| — | 208-684 | 0XXX1XXX2XXX6XXX7XXX8XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | BLACKFOOT | ID |
| — | 208-685 | 9XXX which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-725 | 3XXX6XXX8XXX9XXX which blocks → | QWEST CORPORATION | 9636 | KETCHUM | ID |
| — | 208-726 | not yet reported which blocks → | QWEST CORPORATION | 9636 | KETCHUM | ID |
| — | 208-727 | none assigned yet which blocks → | QWEST CORPORATION | 9636 | KETCHUM | ID |
| — | 208-732 | 2XXX9XXX · 2 holders which blocks → | QWEST CORPORATION | 9636 | TWIN FALLS | ID |
| — | 208-733 | not yet reported which blocks → | QWEST CORPORATION | 9636 | TWIN FALLS | ID |
| — | 208-734 | not yet reported which blocks → | QWEST CORPORATION | 9636 | TWIN FALLS | ID |
| — | 208-735 | not yet reported which blocks → | QWEST CORPORATION | 9636 | TWIN FALLS | ID |
| — | 208-736 | not yet reported which blocks → | QWEST CORPORATION | 9636 | TWIN FALLS | ID |
| — | 208-737 | not yet reported which blocks → | QWEST CORPORATION | 9636 | TWIN FALLS | ID |
| — | 208-738 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | QWEST CORPORATION | 9636 | TWIN FALLS | ID |
| — | 208-743 | not yet reported which blocks → | QWEST CORPORATION | 9638 | LEWISTON | ID |
| — | 208-745 | 2XXX3XXX4XXX · 2 holders which blocks → | QWEST CORPORATION | 9636 | RIGBY | ID |
| — | 208-746 | not yet reported which blocks → | QWEST CORPORATION | 9638 | LEWISTON | ID |
| — | 208-747 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-750 | 8XXX which blocks → | QWEST CORPORATION | 9638 | LEWISTON | ID |
| — | 208-754 | 1XXX2XXX3XXX5XXX6XXX7XXX · 2 holders which blocks → | QWEST CORPORATION | 9636 | RIGBY | ID |
| — | 208-775 | 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | QWEST CORPORATION | 9636 | POCATELLO | 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.