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
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 208-396 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-397 | none assigned yet which blocks → | ZIPLY FIBER IDAHO, LLC DBA ZIPLY FIBER | 4427 | ABERDEEN | ID |
| — | 208-398 | 0XXX2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → | QWEST CORPORATION | 9636 | EMMETT | ID |
| — | 208-401 | 4XXX5XXX6XXX8XXX which blocks → | PAETEC ITEL, LLC | 829J | BOISE | ID |
| — | 208-402 | 1XXX3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | CALDWELL | ID |
| — | 208-409 | not yet reported which blocks → | T-MOBILE USA, INC. | 6529 | BOISE | ID |
| — | 208-410 | 3XXX4XXX6XXX8XXX · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | TWIN FALLS | ID |
| — | 208-411 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | ID |
| — | 208-412 | 0XXX2XXX4XXX which blocks → | T-MOBILE USA, INC. | 6529 | BOISE | ID |
| — | 208-414 | not yet reported which blocks → | RURAL NETWORK SERVICES, INC. - ID | 3268 | WEISER | ID |
| — | 208-415 | 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | COERDALENE | ID |
| — | 208-416 | 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | COERDALENE | ID |
| — | 208-417 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ID | 7558 | POCATELLO | ID |
| — | 208-418 | 0XXX1XXX2XXX4XXX9XXX · 2 holders which blocks → | ONVOY, LLC - ID | 689F | TROY | ID |
| — | 208-419 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ID | 7558 | IDAHOFALLS | ID |
| — | 208-420 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID | 6565 | TWIN FALLS | ID |
| — | 208-421 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID | 6565 | TWIN FALLS | 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 |
| — | 208-428 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 4321 | PRIEST RIV | ID |
| — | 208-429 | not yet reported which blocks → | QWEST CORPORATION | 9636 | BOISE | ID |
| — | 208-431 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID | 6565 | RUPERT | 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 |
| — | 208-434 | none assigned yet which blocks → | PROJECT MUTUAL TEL. COOP. ASSN., INC. | 2231 | RUPERT | ID |
| — | 208-435 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 4321 | WEIPPE | ID |
| — | 208-436 | not yet reported which blocks → | PROJECT MUTUAL TEL. COOP. ASSN., INC. | 2231 | RUPERT | ID |
| — | 208-437 | 5XXX6XXX7XXX8XXX9XXX which blocks → | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 4324 | ALBENI | ID |
| — | 208-438 | not yet reported which blocks → | PROJECT MUTUAL TEL. COOP. ASSN., INC. | 2231 | PAUL | ID |
| — | 208-439 | not yet reported which blocks → | ONVOY, LLC - ID | 689F | BOISE | ID |
| — | 208-440 | not yet reported which blocks → | T-MOBILE USA, INC. | 6529 | BOISE | ID |
| — | 208-441 | not yet reported which blocks → | ONVOY, LLC - ID | 689F | BOISE | ID |
| — | 208-442 | not yet reported which blocks → | QWEST CORPORATION | 9636 | NAMPA | ID |
| — | 208-443 | 1XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 4321 | PRIESTLAKE | ID |
| — | 208-444 | 0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 2 holders which blocks → | ONVOY, LLC - ID | 689F | COERDALENE | ID |
| — | 208-445 | not yet reported which blocks → | ONVOY, LLC - ID | 689F | BOISE | ID |
| — | 208-446 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COERDALENE | ID |
| — | 208-447 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | BOISE | ID |
| — | 208-448 | 3XXX5XXX7XXX8XXX9XXX which blocks → | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 4321 | PRIEST RIV | ID |
| — | 208-449 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ID | 7558 | COERDALENE | ID |
| — | 208-452 | 0XXX which blocks → | FARMERS MUTUAL TEL. CO. | 2221 | FRUITLAND | 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 |
| — | 208-456 | 3XXX4XXX which blocks → | COLUMBINE TELCO DBA SILVER STAR COMMUNICATIONS | 2214 | DRIGGS | ID |
| — | 208-457 | 2XXX3XXX4XXX5XXX7XXX · 3 holders which blocks → | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 4321 | POST FALLS | 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.