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 |
|---|---|---|---|---|---|---|
| — | 601-269 | none assigned yet which blocks → | BAY SPRINGS TEL. CO., INC. | 0446 | WHITE OAK | MS |
| — | 601-375 | 8XXX which blocks → | BAY SPRINGS TEL. CO., INC. | 0446 | SOSO | MS |
| — | 601-536 | none assigned yet which blocks → | BAY SPRINGS TEL. CO., INC. | 0446 | HOMEWOOD | MS |
| — | 601-537 | 7XXX which blocks → | BAY SPRINGS TEL. CO., INC. | 0446 | POLKVILLE | MS |
| — | 601-546 | none assigned yet which blocks → | BAY SPRINGS TEL. CO., INC. | 0446 | WALTERS | MS |
| — | 601-670 | none assigned yet which blocks → | BAY SPRINGS TEL. CO., INC. | 0446 | BAYSPRINGS | MS |
| — | 601-725 | none assigned yet which blocks → | BAY SPRINGS TEL. CO., INC. | 0446 | OLDTYLRSVL | MS |
| — | 601-727 | none assigned yet which blocks → | BAY SPRINGS TEL. CO., INC. | 0446 | ROSE HILL | MS |
| — | 601-729 | none assigned yet which blocks → | BAY SPRINGS TEL. CO., INC. | 0446 | SOSO | MS |
| — | 601-739 | none assigned yet which blocks → | BAY SPRINGS TEL. CO., INC. | 0446 | LOUIN | MS |
| — | 601-752 | none assigned yet which blocks → | BAY SPRINGS TEL. CO., INC. | 0446 | PITTMAN | MS |
| — | 601-763 | none assigned yet which blocks → | BAY SPRINGS TEL. CO., INC. | 0446 | BIG CREEK | MS |
| — | 601-764 | none assigned yet which blocks → | BAY SPRINGS TEL. CO., INC. | 0446 | BAYSPRINGS | MS |
| — | 601-789 | 9XXX which blocks → | BAY SPRINGS TEL. CO., INC. | 0446 | SYLVARENA | MS |
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.