NumberResearchRecent prefix assignments
3 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 |
|---|---|---|---|---|---|---|
| — | 779-352 | 0XXX2XXX3XXX8XXX · 3 holders which blocks → | TWILIO INTERNATIONAL, INC. | 506J | WATERMAN | IL |
| — | 779-411 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | IL |
| — | 779-511 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | IL |
| — | 779-555 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | DIR ASST | IL |
| — | 779-611 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | IL |
| — | 779-700 | not yet reported which blocks → | IL | |||
| — | 779-711 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | IL |
| — | 779-774 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | ONVOY, LLC | 224C | ROCKFORD | IL |
| — | 779-811 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | IL |
| — | 779-911 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | IL |
| — | 779-950 | not yet reported which blocks → | IL | |||
| — | 779-958 | not yet reported which blocks → | IL | |||
| — | 779-959 | not yet reported which blocks → | IL | |||
| — | 779-970 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | ROCKFORD | IL |
| — | 779-976 | not yet reported which blocks → | IL |
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.