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 |
|---|---|---|---|---|---|---|
| — | 270-324 | 5XXX which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | MAGNOLIA | KY |
| — | 270-325 | 6XXX which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | BUFFALO | KY |
| — | 270-427 | not yet reported which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | TEMPLEHILL | KY |
| — | 270-428 | 0XXX7XXX8XXX9XXX · 2 holders which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | SUMMERSHAD | KY |
| — | 270-432 | 1XXX6XXX8XXX9XXX which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | EDMONTON | KY |
| — | 270-434 | 5XXX6XXX · 2 holders which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | FOUNTANRUN | KY |
| — | 270-453 | 1XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | HISEVILLE | KY |
| — | 270-457 | 1XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | GAMALIEL | KY |
| — | 270-524 | 6XXX which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | MUNFORDVL | KY |
| — | 270-528 | 0XXX which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | CANMER | KY |
| — | 270-531 | 0XXX which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | BONNIEVL | KY |
| — | 270-537 | none assigned yet which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | CANMER | KY |
| — | 270-565 | none assigned yet which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | CENTER | KY |
| — | 270-614 | 6XXX8XXX · 2 holders which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | GLASGWRURL | KY |
| — | 270-646 | 9XXX which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | LUCAS | KY |
| — | 270-670 | not yet reported which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | GLASGWRURL | KY |
| — | 270-678 | not yet reported which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | GLASGWRURL | KY |
| — | 270-773 | 0XXX9XXX · 2 holders which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | CAVE CITY | KY |
| — | 270-786 | 0XXX7XXX8XXX9XXX · 4 holders which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | HORSE CAVE | KY |
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.