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 |
|---|---|---|---|---|---|---|
| 2013-03-25 | 914-349 | 0–9 XXXall 10 · 3 holders which blocks → | CSC VOICE, LLC | 612K | WSCHSTZN01 | NY |
| 2012-03-13 | 914-327 | 0–9 XXXall 10 · 4 holders which blocks → | CSC VOICE, LLC | 612K | WSCHSTZN01 | NY |
| 2008-06-11 | 914-341 | 0–9 XXXall 10 · 6 holders which blocks → | CSC VOICE, LLC | 612K | WSCHSTZN06 | NY |
| 2008-02-19 | 914-338 | 0–9 XXXall 10 · 4 holders which blocks → | CSC VOICE, LLC | 612K | WSCHSTZN01 | NY |
| 2007-07-23 | 914-920 | 0–9 XXXall 10 · 5 holders which blocks → | CSC VOICE, LLC | 612K | WSCHSTZN01 | NY |
| 2006-07-14 | 914-358 | 0–9 XXXall 10 · 3 holders which blocks → | CSC VOICE, LLC | 612K | WSCHSTZN08 | NY |
| 2005-01-03 | 914-437 | 0–9 XXXall 10 · 4 holders which blocks → | CSC VOICE, LLC | 612K | WSCHSTZN08 | NY |
| 2003-06-30 | 914-977 | 0–9 XXXall 10 · 8 holders which blocks → | CSC VOICE, LLC | 612K | SOUTHSALEM | NY |
| — | 914-743 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | CSC VOICE, LLC | 612K | LAKELAND | NY |
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.