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.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2026-06-11 | 463-340 | 9XXX which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | CICERO | IN |
| 2025-10-20 | 463-553 | 0XXX1XXX3XXX7XXX8XXX9XXX · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | BROWNSBURG | IN |
| 2025-04-22 | 463-329 | 0–9 XXXall 10 · 6 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | CARMEL | IN |
| 2024-10-08 | 463-319 | 0–9 XXXwhole prefix which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | BROWNSBURG | IN |
| 2024-03-07 | 463-299 | 0–9 XXXall 10 · 5 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | SHELBYVL | IN |
| 2024-02-09 | 463-297 | 0–9 XXXall 10 · 4 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | PLAINFIELD | IN |
| 2022-02-23 | 463-270 | 0–9 XXXall 10 · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | FISHERS | IN |
| 2022-01-20 | 463-267 | 0–9 XXXwhole prefix which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | INDIANAPLS | IN |
| 2022-01-19 | 463-265 | 0–9 XXXall 10 · 4 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | FRANKLIN | IN |
| 2021-11-09 | 463-260 | 0XXX1XXX9XXX · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | FAIRLAND | IN |
| 2021-08-24 | 463-254 | 0–9 XXXall 10 · 5 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | CICERO | IN |
| 2018-10-22 | 463-215 | 0–9 XXXall 10 · 5 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | FISHERS | IN |
| 2017-06-22 | 463-204 | 0–9 XXXall 10 · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | GREENWOOD | IN |
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.