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 |
|---|---|---|---|---|---|---|
| 2016-11-14 | 940-938 | 0XXX1XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → | SANTA ROSA TELEPHONE COOPERATIVE, INC. | 4046 | CHILDRESS | TX |
| 2006-04-18 | 940-863 | not yet reported which blocks → | SANTA ROSA TELEPHONE COOPERATIVE, INC. | 4046 | HASKELL | TX |
| 2006-01-10 | 940-672 | not yet reported which blocks → | SANTA ROSA TELEPHONE COOPERATIVE, INC. | 4046 | WEINERT | TX |
| 2005-02-28 | 940-421 | not yet reported which blocks → | SANTA ROSA TELEPHONE COOPERATIVE, INC. | 4046 | MUNDAY | TX |
| 2004-04-19 | 940-988 | not yet reported which blocks → | SANTA ROSA TELEPHONE COOPERATIVE, INC. | 4046 | ASPERMONT | TX |
| 2003-07-09 | 940-428 | not yet reported which blocks → | SANTA ROSA TELEPHONE COOPERATIVE, INC. | 4046 | KAMAY | TX |
| 2003-03-14 | 940-583 | not yet reported which blocks → | SANTA ROSA TELEPHONE COOPERATIVE, INC. | 4046 | HOLLIDAY | TX |
| 2002-02-14 | 940-742 | not yet reported which blocks → | SANTA ROSA TELEPHONE COOPERATIVE, INC. | 4046 | ROCHESTER | TX |
| 2002-02-14 | 940-996 | not yet reported which blocks → | SANTA ROSA TELEPHONE COOPERATIVE, INC. | 4046 | RULE | TX |
| 2001-04-04 | 940-657 | not yet reported which blocks → | SANTA ROSA TELEPHONE COOPERATIVE, INC. | 4046 | KNOX CITY | TX |
| 2001-02-12 | 940-562 | none assigned yet which blocks → | SANTA ROSA TELEPHONE COOPERATIVE, INC. | 4046 | MEGARGEL | TX |
| — | 940-459 | not yet reported which blocks → | SANTA ROSA TELEPHONE COOPERATIVE, INC. | 4046 | BENJAMIN | TX |
| — | 940-889 | not yet reported which blocks → | SANTA ROSA TELEPHONE COOPERATIVE, INC. | 4046 | SEYMOUR | TX |
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.