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.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2016-07-06 | 828-529 | 2XXX3XXX9XXX · 3 holders which blocks → | WINDSTREAM NORTH CAROLINA, INC. | 0476 | TRYON | NC |
| 2015-07-01 | 828-722 | 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 8 holders which blocks → | WINDSTREAM NORTH CAROLINA, INC. | 0476 | COLUMBUS | NC |
| 2015-07-01 | 828-739 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | WINDSTREAM NORTH CAROLINA, INC. | 0476 | GREENCREEK | NC |
| — | 828-859 | 4XXX which blocks → | WINDSTREAM NORTH CAROLINA, INC. | 0476 | TRYON | NC |
| — | 828-863 | not yet reported which blocks → | WINDSTREAM NORTH CAROLINA, INC. | 0476 | GREENCREEK | NC |
| — | 828-894 | not yet reported which blocks → | WINDSTREAM NORTH CAROLINA, INC. | 0476 | COLUMBUS | NC |
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.