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 |
|---|---|---|---|---|---|---|
| 2022-03-14 | 320-767 | 6XXX7XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | MILACA | MN |
| 2022-02-28 | 320-889 | 0XXX1XXX7XXX9XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | MORRIS | MN |
| 2022-02-24 | 320-627 | 0XXX1XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | ROYALTON | MN |
| 2022-02-24 | 320-887 | 0–9 XXXall 10 · 6 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | BENSON | MN |
| 2022-02-22 | 320-546 | 0XXX4XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | ATWATER | MN |
| 2022-02-22 | 320-737 | 0XXX1XXX7XXX8XXX9XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | WILLMAR | MN |
| 2022-02-22 | 320-782 | 0XXX2XXX6XXX7XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | HECTOR | MN |
| 2022-02-17 | 320-742 | 6XXX9XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | SANDSTONE | MN |
| 2022-02-17 | 320-942 | 1XXX5XXX6XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | PINE CITY | MN |
| 2022-02-16 | 320-832 | 0XXX1XXX4XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | BROWNTON | MN |
| 2022-02-16 | 320-865 | 2XXX8XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | OGILVIE | MN |
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.