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 |
|---|---|---|---|---|---|---|
| — | 432-818 | 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | SOUTHWESTERN BELL | 9533 | MIDLAND | TX |
| — | 432-827 | 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | SOUTHWESTERN BELL | 9533 | GOLDSMITH | TX |
| — | 432-830 | not yet reported which blocks → | TX | |||
| — | 432-832 | not yet reported which blocks → | TX | |||
| — | 432-836 | not yet reported which blocks → | BIG BEND TEL. CO., INC. | 2039 | SHEFFIELD | TX |
| — | 432-837 | 4XXX which blocks → | SOUTHWESTERN BELL | 9533 | ALPINE | TX |
| — | 432-848 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | MIDLAND | TX |
| — | 432-880 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ODESSA | TX |
| — | 432-889 | none assigned yet which blocks → | METROPCS, INC. | 5562 | TERMINAL | TX |
| — | 432-894 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | TERMINAL | TX |
| — | 432-903 | not yet reported which blocks → | TX | |||
| — | 432-911 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX |
| — | 432-915 | not yet reported which blocks → | TX | |||
| — | 432-934 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | TERMINAL | TX |
| — | 432-936 | not yet reported which blocks → | TX | |||
| — | 432-940 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MONAHANS | TX |
| — | 432-943 | 0XXX which blocks → | SOUTHWESTERN BELL | 9533 | MONAHANS | TX |
| — | 432-950 | not yet reported which blocks → | TX | |||
| — | 432-956 | not yet reported which blocks → | TX | |||
| — | 432-958 | not yet reported which blocks → | TX | |||
| — | 432-959 | not yet reported which blocks → | TX | |||
| — | 432-965 | not yet reported which blocks → | WES-TEX TELEPHONE COOP., INC. | 2168 | VINCENT | TX |
| — | 432-972 | not yet reported which blocks → | TX | |||
| — | 432-976 | not yet reported which blocks → | TX | |||
| — | 432-979 | not yet reported which blocks → | TX | |||
| — | 432-988 | not yet reported which blocks → | TX |
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.