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 |
|---|---|---|---|---|---|---|
| 2025-10-08 | 920-513 | 0–9 XXXall 10 · 5 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | APPLETON | WI |
| 2023-09-26 | 920-916 | 6XXX which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | HOWARDSGRV | WI |
| 2021-03-02 | 920-357 | 0–9 XXXwhole prefix which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | DE PERE | WI |
| 2017-03-13 | 920-308 | 0–9 XXXall 10 · 8 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | FTATKINSON | WI |
| 2010-02-25 | 920-557 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | BEAVER DAM | WI |
| 2007-10-31 | 920-952 | 0–9 XXXall 10 · 7 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | FONDDU LAC | WI |
| 2007-06-13 | 920-891 | 0–9 XXXall 10 · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | OSHKOSH | WI |
| 2002-04-15 | 920-541 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | JEFFERSON | WI |
| 2002-04-15 | 920-542 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 9 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | FTATKINSON | WI |
| 2002-04-15 | 920-543 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | BURNETT | WI |
| 2002-04-15 | 920-643 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | HORICON | WI |
| 2002-04-15 | 920-644 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | MAYVILLE | WI |
| — | 920-245 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | WATERTOWN | WI |
| — | 920-332 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | BRANDON | WI |
| — | 920-345 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | WAUPUN | WI |
| — | 920-626 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | COLUMBUS | WI |
| — | 920-632 | 0–9 XXXall 10 · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | DE PERE | WI |
| — | 920-634 | 0–9 XXXall 10 · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | GREEN BAY | WI |
| — | 920-638 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | FONDDU LAC | WI |
| — | 920-663 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | MANITOWOC | WI |
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.