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 |
|---|---|---|---|---|---|---|
| — | 843-257 | 7XXX which blocks → | HOME TELEPHONE ILEC, LLC | 0527 | JAMESTOWN | SC |
| — | 843-336 | 8XXX which blocks → | HOME TELEPHONE ILEC, LLC | 0527 | HUGER | SC |
| — | 843-462 | not yet reported which blocks → | HOME TELEPHONE ILEC, LLC | 0527 | HARLEYVL | SC |
| — | 843-482 | not yet reported which blocks → | HOME TELEPHONE ILEC, LLC | 0527 | MONCKS COR | SC |
| — | 843-565 | 6XXX7XXX · 2 holders which blocks → | HOME TELEPHONE ILEC, LLC | 0527 | MACEDONIA | SC |
| — | 843-688 | 3XXX8XXX9XXX · 3 holders which blocks → | HOME TELEPHONE ILEC, LLC | 0527 | LEBANON | SC |
| — | 843-719 | not yet reported which blocks → | HOME TELEPHONE ILEC, LLC | 0527 | MONCKS COR | SC |
| — | 843-753 | 8XXX9XXX · 2 holders which blocks → | HOME TELEPHONE ILEC, LLC | 0527 | CROSS | SC |
| — | 843-761 | not yet reported which blocks → | HOME TELEPHONE ILEC, LLC | 0527 | MONCKS COR | SC |
| — | 843-899 | not yet reported which blocks → | HOME TELEPHONE ILEC, LLC | 0527 | MONCKS COR | 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.