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 |
|---|---|---|---|---|---|---|
| 2008-11-10 | 601-839 | not yet reported which blocks → | TEC OF JACKSON, INC. - MS | 3704 | ENTERPRISE | MS |
| 2006-05-25 | 601-900 | 0–9 XXXall 10 · 5 holders which blocks → | TEC OF JACKSON, INC. - MS | 3704 | FOREST | MS |
| 2006-05-18 | 601-800 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | TEC OF JACKSON, INC. - MS | 3704 | ELLISVILLE | MS |
| 2006-05-01 | 601-990 | 0–9 XXXall 10 · 5 holders which blocks → | TEC OF JACKSON, INC. - MS | 3704 | BROOKHAVEN | MS |
| 2004-06-08 | 601-790 | 0–9 XXXall 10 · 9 holders which blocks → | TEC OF JACKSON, INC. - MS | 3704 | MADISON | MS |
| 2003-11-11 | 601-474 | not yet reported which blocks → | TEC OF JACKSON, INC. - MS | 3704 | MERIDIAN | MS |
| 2002-07-12 | 601-726 | not yet reported which blocks → | TEC OF JACKSON, INC. - MS | 3704 | HATTIESBG | MS |
| — | 601-326 | 1XXX2XXX which blocks → | TEC OF JACKSON, INC. - MS | 3704 | JACKSON | MS |
| — | 601-578 | not yet reported which blocks → | TEC OF JACKSON, INC. - MS | 3704 | LAUREL | MS |
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.