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 |
|---|---|---|---|---|---|---|
| 2015-06-17 | 580-553 | not yet reported which blocks → | PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | 468B | LAVERNE | OK |
| 2003-05-29 | 580-516 | not yet reported which blocks → | PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | 468B | FELTWHLESS | OK |
| 2003-05-29 | 580-517 | not yet reported which blocks → | PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | 468B | BOISE CITY | OK |
| 2003-05-29 | 580-518 | not yet reported which blocks → | PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | 468B | KEYES | OK |
| 2003-05-29 | 580-519 | not yet reported which blocks → | PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | 468B | GRIGGS | OK |
| 2003-05-29 | 580-520 | not yet reported which blocks → | PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | 468B | EVA | OK |
| 2003-05-29 | 580-521 | not yet reported which blocks → | PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | 468B | TEXHOMA | OK |
| 2003-05-29 | 580-522 | not yet reported which blocks → | PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | 468B | HOOKER | OK |
| 2003-05-29 | 580-523 | not yet reported which blocks → | PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | 468B | TYRONE | OK |
| 2003-05-29 | 580-524 | not yet reported which blocks → | PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | 468B | HARDESTY | OK |
| 2003-05-29 | 580-525 | not yet reported which blocks → | PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | 468B | BALKO | OK |
| 2003-05-29 | 580-527 | not yet reported which blocks → | PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | 468B | BEAVER | OK |
| 2003-05-29 | 580-528 | not yet reported which blocks → | PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | 468B | FLORIS | OK |
| 2003-05-29 | 580-539 | not yet reported which blocks → | PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | 468B | TURPIN | OK |
| 2003-05-29 | 580-552 | not yet reported which blocks → | PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | 468B | LOGAN | OK |
| — | 580-206 | not yet reported which blocks → | PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | 468B | GUYMON | OK |
| — | 580-617 | not yet reported which blocks → | PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | 468B | GUYMON | OK |
| — | 580-651 | not yet reported which blocks → | PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | 468B | GUYMON | OK |
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.