NumberResearchRecent prefix assignments
355 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.
Most active assignees, last 30 days
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 724-511 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PA |
| — | 724-512 | 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | ALIQUIPPA | PA |
| — | 724-513 | none assigned yet which blocks → | METROPCS, INC. | 5562 | ROCHESTER | PA |
| — | 724-514 | 0XXX7XXX9XXX · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | CANONSBURG | PA |
| — | 724-515 | 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | PTGSBNZN23 | PA |
| — | 724-516 | 2XXX which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | GREENSBURG | PA |
| — | 724-518 | 2XXX5XXX7XXX8XXX which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | MONONGAHLA | PA |
| — | 724-520 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | LATROBE | PA |
| — | 724-522 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 6 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | JEANNETTE | PA |
| — | 724-523 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | JEANNETTE | PA |
| — | 724-525 | 8XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KITTANNING | PA |
| — | 724-526 | 1XXX2XXX4XXX7XXX8XXX · 3 holders which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | EAST BRADY | PA |
| — | 724-527 | 0XXX4XXX8XXX · 3 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | JEANNETTE | PA |
| — | 724-528 | 4XXX5XXX6XXX7XXX · 3 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | WMIDDLESEX | PA |
| — | 724-529 | 3XXX4XXX5XXX6XXX9XXX · 2 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | DAWSON | PA |
| — | 724-530 | 3XXX4XXX5XXX9XXX · 2 holders which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | PLAINGROVE | PA |
| — | 724-532 | 7XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | LATROBE | PA |
| — | 724-533 | 1XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | VOLANT | PA |
| — | 724-535 | 0XXX2XXX5XXX6XXX9XXX · 4 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | WAMPUM | PA |
| — | 724-537 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | LATROBE | PA |
| — | 724-538 | 2XXX6XXX7XXX · 2 holders which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | EVANS CITY | PA |
| — | 724-539 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | LATROBE | PA |
| — | 724-541 | 8XXX9XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | INDIANA | PA |
| — | 724-542 | 0XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | MTPLEASANT | PA |
| — | 724-543 | not yet reported which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | KITTANNING | PA |
| — | 724-544 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BEAVER FLS | PA |
| — | 724-545 | not yet reported which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | KITTANNING | PA |
| — | 724-546 | 1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | LOWELLVL | PA |
| — | 724-547 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | MTPLEASANT | PA |
| — | 724-548 | not yet reported which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | KITTANNING | PA |
| — | 724-550 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | UNIONTOWN | PA |
| — | 724-551 | 0–9 XXXall 10 · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | SHARON | PA |
| — | 724-552 | 3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | GREENSBURG | PA |
| — | 724-554 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WASHINGTON | PA |
| — | 724-555 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | DIR ASST | PA |
| — | 724-557 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | UNIONTOWN | PA |
| — | 724-558 | 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | SPRINGDALE | PA |
| — | 724-561 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → | FIDIUM ENTERPRISE SERVICES, LLC | 383J | ROCHESTER | PA |
| — | 724-562 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | UNIONTOWN | PA |
| — | 724-564 | 6XXX8XXX · 2 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | FAIRCHANCE | PA |
| — | 724-565 | 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | CHARLEROI | PA |
| — | 724-566 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | CLAYSVILLE | PA |
| — | 724-567 | 0XXX3XXX4XXX8XXX9XXX · 5 holders which blocks → | VERIZON NORTH, INC. - PA | 0169 | VANDERGRFT | PA |
| — | 724-568 | 0XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → | VERIZON NORTH, INC. - PA | 0169 | VANDERGRFT | PA |
| — | 724-569 | 2XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | SMITHFIELD | PA |
| — | 724-570 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | UNIONTOWN | PA |
| — | 724-571 | 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → | VERIZON NORTH, INC. - PA | 0169 | VANDERGRFT | PA |
| — | 724-572 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | LATROBE | PA |
| — | 724-573 | 3XXX6XXX7XXX8XXX · 3 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | HOOKSTOWN | PA |
| — | 724-575 | 1XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | EXPORT | 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.