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 |
|---|---|---|---|---|---|---|
| — | 724-264 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | GROVE CITY | PA |
| — | 724-265 | not yet reported which blocks → | CONSOLIDATED COMMUNICATIONS OF PENNSYLVANIA CO | 0193 | CURTISVL | PA |
| — | 724-266 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | AMBRIDGE | PA |
| — | 724-267 | not yet reported which blocks → | CONSOLIDATED COMMUNICATIONS OF PENNSYLVANIA COMP | 0185 | MARIANNA | PA |
| — | 724-270 | 0XXX1XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | BESSEMER | PA |
| — | 724-271 | 0XXX1XXX3XXX6XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | CANONSBURG | PA |
| — | 724-272 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | CRIDERSCOR | PA |
| — | 724-273 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | IMPERIAL | PA |
| — | 724-274 | 1XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | SPRINGDALE | PA |
| — | 724-275 | 4XXX6XXX8XXX · 2 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | SPRINGDALE | PA |
| — | 724-276 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | CHARLEROI | PA |
| — | 724-277 | 1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | CONNELLSVL | PA |
| — | 724-278 | 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | DONORA | PA |
| — | 724-279 | 0XXX2XXX3XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → | ONVOY, LLC - PA | 547E | FAYETTE CY | PA |
| — | 724-281 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - PA | 547E | FINLEYVL | PA |
| — | 724-282 | not yet reported which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | BUTLER | PA |
| — | 724-283 | not yet reported which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | BUTLER | PA |
| — | 724-284 | not yet reported which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | BUTLER | PA |
| — | 724-285 | not yet reported which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | BUTLER | PA |
| — | 724-286 | 0XXX2XXX3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | MARCHAND | PA |
| — | 724-287 | not yet reported which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | BUTLER | PA |
| — | 724-288 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WASHINGTON | PA |
| — | 724-289 | 0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | GREENSBURG | PA |
| — | 724-290 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BUTLER | PA |
| — | 724-291 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | HERMINIE | PA |
| — | 724-292 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | MONONGAHLA | PA |
| — | 724-293 | 0XXX3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | IMPERIAL | PA |
| — | 724-294 | 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | FREEPORT | PA |
| — | 724-295 | not yet reported which blocks → | CONSOLIDATED COMMUNICATIONS OF PENNSYLVANIA CO | 0193 | FREEPORT | PA |
| — | 724-296 | 0XXX1XXX2XXX3XXX5XXX6XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | JEANNETTE | PA |
| — | 724-297 | 1XXX2XXX6XXX8XXX · 4 holders which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | WORTHINGTN | PA |
| — | 724-298 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | MCDONALD | PA |
| — | 724-299 | 1XXX3XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | MCMURRAY | PA |
| — | 724-300 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | MERCER | PA |
| — | 724-301 | 6XXX7XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | SHARON | PA |
| — | 724-302 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | ALIQUIPPA | PA |
| — | 724-304 | 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEWKNSNGTN | PA |
| — | 724-307 | 0XXX1XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | OAKDALE | PA |
| — | 724-308 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | SHARON | PA |
| — | 724-309 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GREENSBURG | PA |
| — | 724-310 | 1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | MONONGAHLA | PA |
| — | 724-311 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PA |
| — | 724-312 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BEAVER FLS | PA |
| — | 724-313 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | BLACK LICK | PA |
| — | 724-314 | 0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | MONESSEN | PA |
| — | 724-315 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GLENWILLRD | PA |
| — | 724-316 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | CRIDERSCOR | PA |
| — | 724-321 | none assigned yet which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | GIBSONIA | PA |
| — | 724-322 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | UNIONTOWN | PA |
| — | 724-323 | 0XXX1XXX8XXX9XXX · 3 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | UNIONTOWN | 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.