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 |
|---|---|---|---|---|---|---|
| — | 541-589 | 5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | BURNS | OR |
| — | 541-591 | 7XXX8XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | KLAMATHFLS | OR |
| — | 541-604 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | REDMOND | OR |
| — | 541-609 | 2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | PHILOMATH | OR |
| — | 541-610 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | BEND | OR |
| — | 541-619 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | ALBANY | OR |
| — | 541-620 | 3XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | JOHN DAY | OR |
| — | 541-670 | 2XXX3XXX4XXX5XXX6XXX7XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | ROSEBURG | OR |
| — | 541-671 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | ROSEBURG | OR |
| — | 541-690 | 0–9 XXXall 10 · 6 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | MEDFORD | OR |
| — | 541-729 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | EUGENE | OR |
| — | 541-760 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | CORVALLIS | OR |
| — | 541-786 | 6XXX7XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | LA GRANDE | OR |
| — | 541-891 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | KLAMATHFLS | OR |
| — | 541-921 | 6XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | LINCOLN CY | OR |
| — | 541-961 | 5XXX6XXX7XXX9XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | NEWPORT | OR |
| — | 541-969 | 5XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | PENDLETON | OR |
| — | 541-990 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | ALBANY | OR |
| — | 541-999 | 3XXX4XXX5XXX6XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | FLORENCE | OR |
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.