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 |
|---|---|---|---|---|---|---|
| 2007-04-26 | 843-646 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | WMYRTLEBCH | SC |
| 2001-12-26 | 843-652 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | MURELSINLT | SC |
| 2001-01-02 | 843-581 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | COLLINSCK | SC |
| — | 843-215 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | COLLINSCK | SC |
| — | 843-234 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | EASTCONWAY | SC |
| — | 843-236 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | WMYRTLEBCH | SC |
| — | 843-293 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | LAKEWOOD | SC |
| — | 843-294 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | LAKEWOOD | SC |
| — | 843-347 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | EASTCONWAY | SC |
| — | 843-349 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | EASTCONWAY | SC |
| — | 843-357 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | MURELSINLT | SC |
| — | 843-358 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | AYNOR | SC |
| — | 843-365 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | NO CONWAY | SC |
| — | 843-366 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | WAMPEE | SC |
| — | 843-369 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | NO CONWAY | SC |
| — | 843-390 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | WAMPEE | SC |
| — | 843-392 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | FLOYDS | SC |
| — | 843-397 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | SO CONWAY | SC |
| — | 843-399 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | WAMPEE | SC |
| — | 843-650 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | COLLINSCK | SC |
| — | 843-651 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | MURELSINLT | SC |
| — | 843-716 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | LORIS | SC |
| — | 843-756 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | LORIS | SC |
| — | 843-903 | not yet reported which blocks → | HORRY TEL. COOP., INC. | 0528 | WMYRTLEBCH | SC |
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.