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 |
|---|---|---|---|---|---|---|
| 2021-10-07 | 865-420 | 0–9 XXXall 10 · 4 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | MASCOT | TN |
| 2018-04-23 | 865-350 | 0–9 XXXall 10 · 5 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | JEFFERSNCY | TN |
| 2014-11-11 | 865-412 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | GATLINBURG | TN |
| 2012-08-30 | 865-317 | 0–9 XXXall 10 · 6 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | LENOIRCITY | TN |
| 2010-04-06 | 865-345 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | TATE SPG | TN |
| 2009-08-27 | 865-302 | 0XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | RUTLEDGE | TN |
| 2005-10-05 | 865-233 | 0–9 XXXall 10 · 3 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | MARYVILLE | 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.