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 |
|---|---|---|---|---|---|---|
| 2010-07-29 | 607-366 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | LANSING | NY |
| 2009-11-17 | 607-304 | 0–9 XXXall 10 · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | BINGHAMTON | NY |
| 2009-07-30 | 607-500 | 0–9 XXXwhole prefix which blocks → | PAETEC ITEL, LLC | 829J | ITHACA | NY |
| 2001-05-15 | 607-348 | 3XXX4XXX5XXX6XXX7XXX8XXX which blocks → | PAETEC ITEL, LLC | 829J | BINGHAMTON | NY |
| 2001-05-15 | 607-429 | 3XXX4XXX5XXX8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | ENDICOTT | NY |
| — | 607-216 | 2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | ITHACA | NY |
| — | 607-217 | 4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | BINGHAMTON | NY |
| — | 607-218 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | CORTLAND | NY |
| — | 607-219 | 3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | ITHACA | NY |
| — | 607-220 | 3XXX4XXX6XXX7XXX8XXX9XXX which blocks → | PAETEC ITEL, LLC | 829J | ITHACA | NY |
| — | 607-231 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | BINGHAMTON | NY |
| — | 607-235 | 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | BINGHAMTON | NY |
| — | 607-299 | 3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | CORTLAND | NY |
| — | 607-330 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | ITHACA | NY |
| — | 607-344 | 1XXX3XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | CORTLAND | NY |
| — | 607-355 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | BINGHAMTON | NY |
| — | 607-391 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → | PAETEC ITEL, LLC | 829J | ITHACA | NY |
| — | 607-398 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | ELMIRA | NY |
| — | 607-428 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | CORTLAND | NY |
| — | 607-441 | 3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | ONEONTA | NY |
| — | 607-483 | 0–9 XXXall 10 · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | ELMIRA | NY |
| — | 607-484 | 5XXX6XXX7XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | ENDICOTT | NY |
| — | 607-597 | 2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | CORTLAND | NY |
| — | 607-697 | 3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | ITHACA | NY |
| — | 607-834 | 0XXX1XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | ENDICOTT | NY |
| — | 607-846 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | ELMIRA | 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.