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 |
|---|---|---|---|---|---|---|
| 2022-02-01 | 865-562 | 0–9 XXXall 10 · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | KNOXVILLE | TN |
| 2022-02-01 | 865-863 | 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | SHARPSCHPL | TN |
| 2022-01-20 | 865-626 | 0XXX1XXX2XXX6XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | CHESTNUTHI | TN |
| 2022-01-20 | 865-822 | 0XXX1XXX2XXX7XXX8XXX9XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | OLIVER SPG | TN |
| 2022-01-20 | 865-962 | 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | CLAXTON | TN |
| 2022-01-14 | 865-746 | 0XXX1XXX7XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | NORRIS | TN |
| 2022-01-13 | 865-464 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | ROCKWOOD | TN |
| 2022-01-13 | 865-563 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | MAYNARDVL | TN |
| 2022-01-13 | 865-625 | 0–9 XXXall 10 · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | CONCORD | TN |
| 2022-01-13 | 865-669 | 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | DANDRIDGE | TN |
| 2022-01-13 | 865-832 | 0–9 XXXall 10 · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | SEVIERVL | TN |
| 2022-01-13 | 865-837 | 0XXX1XXX4XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | BEAN STATN | TN |
| 2022-01-13 | 865-874 | 0–9 XXXall 10 · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | LOUDON | TN |
| 2022-01-13 | 865-876 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | POWELL | TN |
| 2021-05-04 | 865-864 | 0XXX1XXX3XXX7XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | WESTSWEETW | TN |
| 2021-04-07 | 865-968 | 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | KINGSTON | TN |
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.