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 |
|---|---|---|---|---|---|---|
| 2024-02-15 | 319-485 | 0–9 XXXwhole prefix which blocks → | PAETEC ITEL, LLC | 829J | IOWA CITY | IA |
| 2011-11-23 | 319-409 | 0–9 XXXall 10 · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | CEDAR RPDS | IA |
| 2003-03-25 | 319-208 | 1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | BURLINGTON | IA |
| — | 319-248 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | IOWA CITY | IA |
| — | 319-261 | 8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | CEDAR RPDS | IA |
| — | 319-265 | 9XXX which blocks → | PAETEC ITEL, LLC | 829J | CEDAR RPDS | IA |
| — | 319-433 | 5XXX8XXX which blocks → | PAETEC ITEL, LLC | 829J | WATERLOO | IA |
| — | 319-553 | 5XXX6XXX8XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | CEDARFALLS | IA |
| — | 319-576 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | BURLINGTON | IA |
| — | 319-596 | 2XXX3XXX4XXX5XXX6XXX8XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | WAVERLY | IA |
| — | 319-730 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | CEDAR RPDS | IA |
| — | 319-731 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | CEDAR RPDS | IA |
| — | 319-734 | 1XXX2XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | CEDAR RPDS | IA |
| — | 319-739 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | CEDAR RPDS | IA |
| — | 319-790 | none assigned yet which blocks → | PAETEC ITEL, LLC | 829J | CEDAR RPDS | IA |
| — | 319-892 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | CEDAR RPDS | IA |
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.