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 414
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 |
|---|---|---|---|---|---|---|
| — | 414-302 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-304 | 4XXX5XXX8XXX9XXX · 3 holders which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN5 | WI |
| — | 414-319 | 9XXX which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-321 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-325 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-327 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-328 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-329 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-332 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-336 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-337 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-341 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-342 | 6XXX which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-343 | 6XXX9XXX which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-344 | 8XXX which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-345 | 0XXX7XXX8XXX which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-347 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-351 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN4 | WI |
| — | 414-352 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN4 | WI |
| — | 414-353 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN4 | WI |
| — | 414-354 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN4 | WI |
| — | 414-355 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN4 | WI |
| — | 414-357 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN4 | WI |
| — | 414-358 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN4 | WI |
| — | 414-359 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN4 | WI |
| — | 414-362 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN4 | WI |
| — | 414-365 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN4 | WI |
| — | 414-371 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN4 | WI |
| — | 414-372 | 0XXX6XXX · 2 holders which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-374 | 1XXX2XXX3XXX5XXX6XXX · 2 holders which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-382 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-383 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-384 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-385 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-389 | 7XXX8XXX · 2 holders which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-390 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-393 | 7XXX8XXX which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-421 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN3 | WI |
| — | 414-422 | 3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN3 | WI |
| — | 414-423 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN3 | WI |
| — | 414-425 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN3 | WI |
| — | 414-427 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN3 | WI |
| — | 414-438 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-442 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-443 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-444 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-445 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-447 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-449 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
| — | 414-453 | not yet reported which blocks → | WISCONSIN BELL INC | 9327 | MILWAUKZN1 | WI |
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.