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
Aug 2026
Jul 2026
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May 2026
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Dec 2025
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2016-04-08 | 208-205 | 0–9 XXXall 10 · 3 holders which blocks → | QWEST CORPORATION | 9636 | NAMPA | ID |
| 2007-10-02 | 208-302 | 0–9 XXXwhole prefix which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| 2006-09-13 | 208-492 | 0–9 XXXwhole prefix which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| 2004-06-16 | 208-822 | 0–9 XXXwhole prefix which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| 2001-07-11 | 208-496 | none assigned yet which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| 2001-02-05 | 208-706 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-225 | 4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | TYGEE VLY | ID |
| — | 208-226 | 0XXX4XXX6XXX8XXX · 2 holders which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-227 | 3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-228 | 0XXX1XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | RIGBY | ID |
| — | 208-232 | not yet reported which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-233 | not yet reported which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-234 | not yet reported which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-235 | not yet reported which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-236 | not yet reported which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-237 | not yet reported which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-238 | not yet reported which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-239 | not yet reported which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-242 | 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-254 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-278 | 1XXX2XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → | QWEST CORPORATION | 9636 | NEW PLYMTH | ID |
| — | 208-282 | not yet reported which blocks → | QWEST CORPORATION | 9636 | POCATELLO | ID |
| — | 208-286 | 1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-288 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-321 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-322 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-323 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-324 | not yet reported which blocks → | QWEST CORPORATION | 9636 | TWIN FALLS | ID |
| — | 208-327 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-331 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-332 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-333 | 4XXX5XXX6XXX which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-334 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-336 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-338 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-341 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-342 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-343 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-344 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-345 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-346 | 0XXX1XXX2XXX3XXX7XXX8XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-348 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-352 | 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | QWEST CORPORATION | 9636 | TWIN FALLS | ID |
| — | 208-356 | not yet reported which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-357 | 4XXX6XXX8XXX9XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-359 | not yet reported which blocks → | QWEST CORPORATION | 9636 | IDAHOFALLS | ID |
| — | 208-362 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-363 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-364 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-365 | none assigned yet which blocks → | QWEST CORPORATION | 9636 | EMMETT | 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.