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 |
|---|---|---|---|---|---|---|
| 2022-03-24 | 734-982 | 0–9 XXXall 10 · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | TRENTON | MI |
| 2022-03-24 | 734-987 | 0–9 XXXall 10 · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | PLYMOUTH | MI |
| 2022-03-10 | 734-653 | 0XXX1XXX3XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | MILAN | MI |
| 2022-03-08 | 734-874 | 0XXX1XXX4XXX6XXX8XXX9XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | ERIE | MI |
| 2022-03-04 | 734-932 | 0XXX1XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | DEXTER | MI |
| 2022-02-24 | 734-832 | 2XXX4XXX9XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | WILLIS | MI |
| 2022-01-14 | 734-937 | 0XXX1XXX2XXX7XXX8XXX9XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | WHITMORELK | MI |
| 2022-01-14 | 734-967 | 0XXX2XXX5XXX7XXX9XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | CARLETON | MI |
| 2022-01-08 | 734-643 | 0–9 XXXall 10 · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | WYANDOTTE | MI |
| 2022-01-08 | 734-683 | 5XXX which blocks → | TON80 COMMUNICATIONS, LLC | 516J | GREGORY | MI |
| 2022-01-08 | 734-684 | 0XXX2XXX3XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | IDA | MI |
| 2021-12-22 | 734-768 | 0–9 XXXall 10 · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | ANN ARBOR | MI |
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.