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 |
|---|---|---|---|---|---|---|
| 2016-10-10 | 717-551 | 0–9 XXXall 10 · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | HARISBGZN1 | PA |
| 2009-10-15 | 717-590 | 0–9 XXXall 10 · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | MECHANCSBG | PA |
| 2003-11-14 | 717-943 | 0–9 XXXall 10 · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | HARISBGZN1 | PA |
| — | 717-256 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | HUMMELSTN | PA |
| — | 717-283 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | LANCASTER | PA |
| — | 717-286 | 1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | LANCASTER | PA |
| — | 717-288 | 0–9 XXXall 10 · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | STRASBURG | PA |
| — | 717-364 | 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → | PAETEC ITEL, LLC | 829J | HARISBGZN1 | PA |
| — | 717-389 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | LEBANON | PA |
| — | 717-447 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | LEWISTOWN | PA |
| — | 717-458 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | MECHANCSBG | PA |
| — | 717-459 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | PAETEC ITEL, LLC | 829J | LANDISVL | PA |
| — | 717-546 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | PAETEC ITEL, LLC | 829J | MIDDLETOWN | PA |
| — | 717-584 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | MILLERSVL | PA |
| — | 717-641 | 1XXX2XXX3XXX6XXX7XXX9XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | PALMYRA | PA |
| — | 717-724 | 5XXX6XXX7XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | HARISBGZN1 | PA |
| — | 717-831 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | HARISBGZN2 | PA |
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.