NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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 |
|---|---|---|---|---|---|---|
| — | 240-241 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → | STARPOWER COMMUNICATIONS, LLC - MD | 8832 | WSNG236Z13 | MD |
| — | 240-242 | 3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → | STARPOWER COMMUNICATIONS, LLC - MD | 8832 | WSNGTNZN11 | MD |
| — | 240-244 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → | STARPOWER COMMUNICATIONS, LLC - MD | 8832 | WSNGTNZN16 | MD |
| — | 240-245 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → | STARPOWER COMMUNICATIONS, LLC - MD | 8832 | WSNG236Z14 | MD |
| — | 240-246 | 3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → | STARPOWER COMMUNICATIONS, LLC - MD | 8832 | GAITHERSBG | MD |
| — | 240-293 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → | STARPOWER COMMUNICATIONS, LLC - MD | 8832 | WSNGTNZN12 | MD |
| — | 240-317 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → | STARPOWER COMMUNICATIONS, LLC - MD | 8832 | LXTNPKGRML | MD |
| — | 240-342 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → | STARPOWER COMMUNICATIONS, LLC - MD | 8832 | ASHTON236 | MD |
| — | 240-392 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → | STARPOWER COMMUNICATIONS, LLC - MD | 8832 | WSHNGTNZN5 | MD |
| — | 240-668 | 0XXX2XXX3XXX4XXX5XXX9XXX · 4 holders which blocks → | STARPOWER COMMUNICATIONS, LLC - MD | 8832 | DAMASCS236 | MD |
| — | 240-682 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX which blocks → | STARPOWER COMMUNICATIONS, LLC - MD | 8832 | WALDORF | MD |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.