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.
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 |
|---|---|---|---|---|---|---|
| — | 208-341 | 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 |
| — | 208-347 | 1XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | ZIPLY FIBER IDAHO, LLC DBA ZIPLY FIBER | 4427 | NEWMEADOWS | ID |
| — | 208-348 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-349 | none assigned yet which blocks → | ALBION TELEPHONE CO. DBA ATC COMMUNICATIONS | 2213 | RAFT RIVER | ID |
| — | 208-350 | 0–9 XXXall 10 · 3 holders which blocks → | LEVEL 3 TELECOM OF IDAHO, LLC - ID | 7511 | BOISE | ID |
| — | 208-351 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID | 6565 | IDAHOFALLS | ID |
| — | 208-352 | 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | QWEST CORPORATION | 9636 | TWIN FALLS | ID |
| — | 208-354 | not yet reported which blocks → | COLUMBINE TELCO DBA SILVER STAR COMMUNICATIONS | 2214 | DRIGGS | ID |
| — | 208-355 | not yet reported which blocks → | MIDVALE TELEPHONE EXCHANGE, INC. | 2226 | MIDVALE | 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 |
| — | 208-360 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID | 6565 | IDAHOFALLS | ID |
| — | 208-361 | not yet reported which blocks → | ONVOY, LLC - ID | 689F | BOISE | 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 |
| — | 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 |
| — | 208-369 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID | 6565 | EMMETT | ID |
| — | 208-371 | not yet reported which blocks → | T-MOBILE USA, INC. | 6529 | BOISE | ID |
| — | 208-373 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-374 | not yet reported which blocks → | MUD LAKE TELEPHONE COOPERATIVE ASSOCIATION, INC. | 2227 | DUBOIS | 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 |
| — | 208-379 | not yet reported which blocks → | ONVOY, LLC - ID | 689F | BOISE | ID |
| — | 208-380 | 3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | POCATELLO | ID |
| — | 208-381 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-382 | 8XXX which blocks → | ZIPLY FIBER IDAHO, LLC DBA ZIPLY FIBER | 4427 | CASCADE | 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 |
| — | 208-390 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID | 6565 | IDAHOFALLS | 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 |
| — | 208-394 | not yet reported which blocks → | RURAL TEL CO | 2233 | SHOUP | ID |
| — | 208-395 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
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.