NumberResearchRecent prefix assignments
349 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026
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, last 30 days
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 |
|---|---|---|---|---|---|---|
| — | 715-352 | 0XXX1XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → | FRONTIER NORTH INC. - WI | 0886 | EDGAR | WI |
| — | 715-353 | not yet reported which blocks → | INDIANHEAD TEL. CO. | 0936 | WEYERHAUSR | WI |
| — | 715-354 | 0XXX1XXX2XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → | TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK | 1155 | BIRCHWOOD | WI |
| — | 715-355 | not yet reported which blocks → | FRONTIER NORTH INC. - WI | 0886 | WAUSAU | WI |
| — | 715-356 | not yet reported which blocks → | FRONTIER NORTH INC. - WI | 0886 | MINOCQUA | WI |
| — | 715-357 | not yet reported which blocks → | CHIBARDUN TEL. COOP., INC. | 0861 | ALMENA | WI |
| — | 715-358 | 0XXX which blocks → | FRONTIER NORTH INC. - WI | 0886 | MINOCQUA | WI |
| — | 715-359 | not yet reported which blocks → | FRONTIER NORTH INC. - WI | 0886 | WAUSAU | WI |
| — | 715-360 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | RHINELANDR | WI |
| — | 715-361 | 8XXX which blocks → | FRONTIER COMMUNICATIONS OF WISCONSIN LLC | 0870 | RHINELANDR | WI |
| — | 715-362 | not yet reported which blocks → | FRONTIER COMMUNICATIONS OF WISCONSIN LLC | 0870 | RHINELANDR | WI |
| — | 715-363 | none assigned yet which blocks → | CHEQUAMEGON COMMUNICATIONS COOPERATIVE, INC. | 0860 | MAPLE | WI |
| — | 715-364 | 1XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → | BRIGHTSPEED OF NORTHWEST WISCONSIN, LLC | 0950 | POPLAR | WI |
| — | 715-365 | not yet reported which blocks → | FRONTIER COMMUNICATIONS OF WISCONSIN LLC | 0870 | RHINELANDR | WI |
| — | 715-366 | not yet reported which blocks → | UNION TEL. CO. | 0962 | ALMOND | WI |
| — | 715-367 | 8XXX9XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | RHINELANDR | WI |
| — | 715-369 | not yet reported which blocks → | FRONTIER COMMUNICATIONS OF WISCONSIN LLC | 0870 | RHINELANDR | WI |
| — | 715-370 | not yet reported which blocks → | NEW CELL DBA CELLCOM | 6692 | WAUSAU | WI |
| — | 715-371 | 1XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FREDERIC | WI |
| — | 715-372 | none assigned yet which blocks → | CHEQUAMEGON COMMUNICATIONS COOPERATIVE, INC. | 0860 | IRON RIVER | WI |
| — | 715-373 | 3XXX7XXX · 2 holders which blocks → | BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC | 0924 | WASHBURN | WI |
| — | 715-374 | 0XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | BRIGHTSPEED OF NORTHWEST WISCONSIN, LLC | 0950 | LKNEBAGMON | WI |
| — | 715-375 | 1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | BRIGHTSPEED OF NORTHWEST WISCONSIN, LLC | 0950 | BENNETT | WI |
| — | 715-376 | 1XXX5XXX7XXX8XXX · 3 holders which blocks → | BRIGHTSPEED OF NORTHWEST WISCONSIN, LLC | 0950 | GORDON | WI |
| — | 715-377 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | HUDSON | WI |
| — | 715-378 | 0XXX1XXX5XXX7XXX8XXX · 4 holders which blocks → | BRIGHTSPEED OF NORTHWEST WISCONSIN, LLC | 0950 | SOLON SPG | WI |
| — | 715-379 | none assigned yet which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | EAU CLAIRE | WI |
| — | 715-381 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | HUDSON | WI |
| — | 715-382 | 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | BRIGHTSPEED OF NORTHERN WISCONSIN, LLC | 0956 | JIM FALLS | WI |
| — | 715-383 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | FRONTIER NORTH INC. - WI | 0886 | MARSHFIELD | WI |
| — | 715-384 | not yet reported which blocks → | FRONTIER NORTH INC. - WI | 0886 | MARSHFIELD | WI |
| — | 715-385 | 1XXX5XXX7XXX8XXX · 4 holders which blocks → | BRIGHTSPEED OF NORTHERN WISCONSIN, LLC | 0956 | BOULDERJCT | WI |
| — | 715-386 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | HUDSON | WI |
| — | 715-387 | not yet reported which blocks → | FRONTIER NORTH INC. - WI | 0886 | MARSHFIELD | WI |
| — | 715-389 | not yet reported which blocks → | FRONTIER NORTH INC. - WI | 0886 | MARSHFIELD | WI |
| — | 715-392 | not yet reported which blocks → | BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC | 0924 | SUPERIOR | WI |
| — | 715-394 | not yet reported which blocks → | BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC | 0924 | SUPERIOR | WI |
| — | 715-395 | not yet reported which blocks → | BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC | 0924 | SUPERIOR | WI |
| — | 715-397 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | EAU CLAIRE | WI |
| — | 715-398 | 1XXX9XXX · 2 holders which blocks → | BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC | 0924 | SUPERIOR | WI |
| — | 715-399 | 1XXX4XXX9XXX · 3 holders which blocks → | BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC | 0924 | SUPERIOR | WI |
| — | 715-402 | 1XXX2XXX3XXX4XXX5XXX6XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PEPIN | WI |
| — | 715-403 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADYSMITH | WI |
| — | 715-404 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JIM FALLS | WI |
| — | 715-405 | none assigned yet which blocks → | LAKELAND COMMUNICATIONS GROUP, LLC | 0769 | BALSAMLAKE | WI |
| — | 715-411 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | WI |
| — | 715-412 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WAUPACA | WI |
| — | 715-415 | 8XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | LADYSMITH | WI |
| — | 715-421 | none assigned yet which blocks → | WOOD COUNTY TEL. CO. | 0974 | WISCOSNRPD | WI |
| — | 715-422 | not yet reported which blocks → | WOOD COUNTY TEL. CO. | 0974 | WISCOSNRPD | WI |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.