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 |
|---|---|---|---|---|---|---|
| 2002-01-29 | 801-869 | 0–9 XXXall 10 · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | SALT LAKE | UT |
| — | 801-216 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | AMERCNFORK | UT |
| — | 801-217 | 2XXX3XXX9XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | CLEARFIELD | UT |
| — | 801-218 | 2XXX3XXX · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | FARMINGTON | UT |
| — | 801-315 | 3XXX4XXX which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | KAYSVILLE | UT |
| — | 801-401 | not yet reported which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | SALT LAKE | UT |
| — | 801-504 | 6XXX which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | SPANIHFORK | UT |
| — | 801-601 | 1XXX which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | MIDVALE | UT |
| — | 801-605 | none assigned yet which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | OGDEN | UT |
| — | 801-606 | not yet reported which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | SALT LAKE | UT |
| — | 801-607 | none assigned yet which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | PROVO | UT |
| — | 801-817 | not yet reported which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | SALT LAKE | UT |
| — | 801-820 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | CLEARFIELD | UT |
| — | 801-849 | 3XXX4XXX5XXX9XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | MIDVALE | UT |
| — | 801-861 | not yet reported which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | PROVO | UT |
| — | 801-904 | none assigned yet which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | MURRAY | UT |
| — | 801-905 | 1XXX8XXX · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | MURRAY | UT |
| — | 801-906 | 1XXX3XXX9XXX · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | SALT LAKE | UT |
| — | 801-907 | 0XXX1XXX5XXX · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | SALT LAKE | UT |
| — | 801-981 | 2XXX3XXX4XXX5XXX6XXX9XXX · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | MIDVALE | UT |
| — | 801-992 | 0XXX1XXX4XXX7XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | BOUNTIFUL | UT |
| — | 801-996 | 2XXX4XXX7XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | MIDVALE | UT |
| — | 801-998 | 0XXX2XXX7XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | MIDVALE | UT |
| — | 801-999 | 0XXX1XXX4XXX8XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | MIDVALE | UT |
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.