NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026
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 |
|---|---|---|---|---|---|---|
| — | 432-229 | not yet reported which blocks → | BIG BEND TEL. CO., INC. | 2039 | PRESIDIO | TX |
| — | 432-291 | not yet reported which blocks → | BIG BEND TEL. CO., INC. | 2039 | LANGTRY | TX |
| — | 432-292 | not yet reported which blocks → | BIG BEND TEL. CO., INC. | 2039 | COMSTOCK | TX |
| — | 432-345 | not yet reported which blocks → | BIG BEND TEL. CO., INC. | 2039 | SANDERSON | TX |
| — | 432-358 | not yet reported which blocks → | BIG BEND TEL. CO., INC. | 2039 | ALAMITO | TX |
| — | 432-364 | not yet reported which blocks → | BIG BEND TEL. CO., INC. | 2039 | CALAMTYCRK | TX |
| — | 432-371 | not yet reported which blocks → | BIG BEND TEL. CO., INC. | 2039 | TERLINGUA | TX |
| — | 432-376 | not yet reported which blocks → | BIG BEND TEL. CO., INC. | 2039 | HEATHCNYON | TX |
| — | 432-384 | not yet reported which blocks → | BIG BEND TEL. CO., INC. | 2039 | REDFORD | TX |
| — | 432-395 | not yet reported which blocks → | BIG BEND TEL. CO., INC. | 2039 | SIXSHOOTER | TX |
| — | 432-424 | not yet reported which blocks → | BIG BEND TEL. CO., INC. | 2039 | LAJITAS | TX |
| — | 432-477 | not yet reported which blocks → | BIG BEND TEL. CO., INC. | 2039 | BGBNNTNLPK | TX |
| — | 432-753 | not yet reported which blocks → | BIG BEND TEL. CO., INC. | 2039 | BIG CANYON | TX |
| — | 432-836 | not yet reported which blocks → | BIG BEND TEL. CO., INC. | 2039 | SHEFFIELD | TX |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.