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 |
|---|---|---|---|---|---|---|
| 2004-07-01 | 973-250 | 0–9 XXXall 10 · 8 holders which blocks → | COOPERATIVE COMMUNICATIONS, INC. | 8407 | BRANCHVL | NJ |
| 2002-06-04 | 973-500 | 0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | COOPERATIVE COMMUNICATIONS, INC. | 8407 | ANDOVER | NJ |
| — | 973-488 | 5XXX6XXX7XXX · 3 holders which blocks → | COOPERATIVE COMMUNICATIONS, INC. | 8407 | LIVINGSTON | NJ |
| — | 973-707 | 0XXX2XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | COOPERATIVE COMMUNICATIONS, INC. | 8407 | BLOOMFIELD | NJ |
| — | 973-797 | 9XXX which blocks → | COOPERATIVE COMMUNICATIONS, INC. | 8407 | CALDWELL | NJ |
| — | 973-871 | not yet reported which blocks → | COOPERATIVE COMMUNICATIONS, INC. | 8407 | MORRISTOWN | NJ |
| — | 973-894 | 3XXX which blocks → | COOPERATIVE COMMUNICATIONS, INC. | 8407 | PASSAIC | NJ |
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.