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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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 724-789 | 1XXX3XXX4XXX5XXX8XXX · 4 holders which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | CONOQNSSNG | PA |
| — | 724-791 | 1XXX3XXX4XXX7XXX · 3 holders which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | EAU CLAIRE | PA |
| — | 724-794 | not yet reported which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | SLIPPERYRK | PA |
| — | 724-795 | 0XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | ADVANCED TELEPHONE SYS INC DBA HTC COMMUNICATIONS | 2522 | BUFFALO | PA |
| — | 724-796 | not yet reported which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | MIDWAY | PA |
| — | 724-798 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | BELLEVRNON | PA |
| — | 724-801 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | INDIANA | PA |
| — | 724-802 | 0–9 XXXall 10 · 6 holders which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | WAYNESBURG | PA |
| — | 724-804 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | LATROBE | PA |
| — | 724-805 | 4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | LATROBE | PA |
| — | 724-806 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | SCOTTDALE | PA |
| — | 724-807 | 0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | GROVE CITY | PA |
| — | 724-811 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PA |
| — | 724-812 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | UNIONTOWN | PA |
| — | 724-813 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SHARPSVL | PA |
| — | 724-817 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | AVONMORE | PA |
| — | 724-821 | 0XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | ADVANCED TELEPHONE SYS INC DBA HTC COMMUNICATIONS | 2522 | MCDONALD | PA |
| — | 724-822 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | BUTLER | PA |
| — | 724-823 | 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | DONORA | PA |
| — | 724-824 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 8 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | ELLWOOD CY | PA |
| — | 724-825 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | WASHINGTON | PA |
| — | 724-827 | 4XXX5XXX6XXX7XXX · 4 holders which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | DARLINGTON | PA |
| — | 724-829 | not yet reported which blocks → | SPOK, INC. | 6630 | BEAVER FLS | PA |
| — | 724-830 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | GREENSBURG | PA |
| — | 724-832 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | GREENSBURG | PA |
| — | 724-834 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | GREENSBURG | PA |
| — | 724-835 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | HERMINIE | PA |
| — | 724-836 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | GREENSBURG | PA |
| — | 724-837 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | GREENSBURG | PA |
| — | 724-838 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | GREENSBURG | PA |
| — | 724-839 | not yet reported which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | BOBTOWN | PA |
| — | 724-842 | not yet reported which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | LEECHBURG | PA |
| — | 724-843 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | BEAVER FLS | PA |
| — | 724-845 | not yet reported which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | LEECHBURG | PA |
| — | 724-846 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | BEAVER FLS | PA |
| — | 724-847 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | BEAVER FLS | PA |
| — | 724-848 | 0XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → | FIDIUM ENTERPRISE SERVICES, LLC | 383J | MERIDIAN | PA |
| — | 724-850 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | GREENSBURG | PA |
| — | 724-851 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SHARPSVL | PA |
| — | 724-852 | not yet reported which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | WAYNESBURG | PA |
| — | 724-853 | 5XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | GREENSBURG | PA |
| — | 724-854 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SHARPSVL | PA |
| — | 724-856 | 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | NEW CASTLE | PA |
| — | 724-857 | 6XXX7XXX8XXX · 2 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | ALIQUIPPA | PA |
| — | 724-858 | 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | GREENSBURG | PA |
| — | 724-860 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | SMITHFIELD | PA |
| — | 724-861 | 2XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTGSBNZN23 | PA |
| — | 724-862 | 1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | SMITHSFRRY | PA |
| — | 724-863 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTGSBNZN23 | PA |
| — | 724-864 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTGSBNZN23 | 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.