NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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 |
|---|---|---|---|---|---|---|
| 2013-03-15 | 919-907 | 0–9 XXXall 10 · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NC | 8389 | DURHAM | NC |
| 2008-05-01 | 919-988 | 0–9 XXXall 10 · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NC | 8389 | GOLDSBORO | NC |
| 2001-07-16 | 919-257 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NC | 8389 | DURHAM | NC |
| 2001-02-13 | 919-294 | 4XXX6XXX8XXX9XXX which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NC | 8389 | DURHAM | NC |
| — | 919-278 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NC | 8389 | RALEIGH | NC |
| — | 919-279 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NC | 8389 | RALEIGH | NC |
| — | 919-334 | 1XXX6XXX8XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NC | 8389 | RALEIGH | NC |
| — | 919-335 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NC | 8389 | APEX | NC |
| — | 919-336 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NC | 8389 | CARY-RTP | NC |
| — | 919-337 | 2XXX3XXX5XXX6XXX7XXX8XXX which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NC | 8389 | CARY | NC |
| — | 919-357 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NC | 8389 | CHAPELHILL | NC |
| — | 919-455 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NC | 8389 | RALEIGH | NC |
| — | 919-543 | not yet reported which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NC | 8389 | DURHAM | NC |
| — | 919-650 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NC | 8389 | CARY | NC |
| — | 919-651 | 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NC | 8389 | CARY | NC |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.