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
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| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 724-384 | 3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | BEAVER FLS | PA |
| — | 724-385 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | AMBRIDGE | PA |
| — | 724-386 | 0XXX1XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | ONVOY, LLC - PA | 547E | SPRINGDALE | PA |
| — | 724-387 | 8XXX9XXX which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | EXPORT | PA |
| — | 724-388 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | INDIANA | PA |
| — | 724-389 | 2XXX3XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | TARENTUM | PA |
| — | 724-390 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BADEN | PA |
| — | 724-392 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | COMCAST IP PHONE, LLC | 318J | HARRISONCY | PA |
| — | 724-396 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GREENSBURG | PA |
| — | 724-397 | 0XXX1XXX3XXX5XXX6XXX7XXX · 4 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | MARION CTR | PA |
| — | 724-399 | 3XXX4XXX5XXX7XXX · 4 holders which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | PARKER | PA |
| — | 724-400 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | WALEXANDER | PA |
| — | 724-401 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | NEWFLORNCE | PA |
| — | 724-403 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 8 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | INDIANA | PA |
| — | 724-404 | 0XXX1XXX3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → | ONVOY, LLC - PA | 547E | YOUNGWOOD | PA |
| — | 724-405 | 0XXX1XXX3XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → | TERRA NOVA TELECOM INC. | 145J | WESTNEWTON | PA |
| — | 724-407 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ALIQUIPPA | PA |
| — | 724-408 | 0XXX2XXX3XXX5XXX6XXX · 4 holders which blocks → | ONVOY, LLC - PA | 547E | GLENWILLRD | PA |
| — | 724-409 | 0–9 XXXall 10 · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | TARENTUM | PA |
| — | 724-410 | 0XXX1XXX2XXX3XXX5XXX7XXX8XXX · 6 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SPRINGDALE | PA |
| — | 724-411 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PA |
| — | 724-413 | 2XXX which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | WASHINGTON | PA |
| — | 724-414 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | PARIS | PA |
| — | 724-415 | 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | UNIONTOWN | PA |
| — | 724-416 | 1XXX3XXX5XXX7XXX8XXX · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CANONSBURG | PA |
| — | 724-419 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ALIQUIPPA | PA |
| — | 724-421 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | FIDIUM ENTERPRISE SERVICES, LLC | 383J | SLIPPERYRK | PA |
| — | 724-422 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | INDIANA | PA |
| — | 724-423 | not yet reported which blocks → | CITIZENS TEL. CO. OF KECKSBURG | 0156 | MAMMOTH | PA |
| — | 724-424 | not yet reported which blocks → | CITIZENS TEL. CO. OF KECKSBURG | 0156 | MAMMOTH | PA |
| — | 724-425 | 0XXX4XXX5XXX6XXX · 3 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | UNIONTOWN | PA |
| — | 724-426 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | BROWNSVL | PA |
| — | 724-428 | 2XXX6XXX7XXX · 3 holders which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | GRAYSVILLE | PA |
| — | 724-429 | 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 5 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | BURGETTSTN | PA |
| — | 724-430 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | UNIONTOWN | PA |
| — | 724-431 | 5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | FIDIUM ENTERPRISE SERVICES, LLC | 383J | BUTLER | PA |
| — | 724-432 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | FIDIUM ENTERPRISE SERVICES, LLC | 383J | EVANS CITY | PA |
| — | 724-433 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | GREENSBURG | PA |
| — | 724-434 | 0XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | UNIONTOWN | PA |
| — | 724-435 | not yet reported which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | SPRAGGS | PA |
| — | 724-436 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | EPALESTINE | PA |
| — | 724-437 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | UNIONTOWN | PA |
| — | 724-438 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | UNIONTOWN | PA |
| — | 724-439 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | UNIONTOWN | PA |
| — | 724-440 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | UNIONTOWN | PA |
| — | 724-443 | not yet reported which blocks → | CONSOLIDATED COMMUNICATIONS OF PENNSYLVANIA CO | 0193 | GIBSONIA | PA |
| — | 724-444 | not yet reported which blocks → | CONSOLIDATED COMMUNICATIONS OF PENNSYLVANIA CO | 0193 | GIBSONIA | PA |
| — | 724-445 | 1XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | CHICORA | PA |
| — | 724-446 | 2XXX4XXX6XXX8XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | HERMINIE | PA |
| — | 724-447 | not yet reported which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | NEW FREEPT | 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.