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.
Most active assignees, all time — NPA 717
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| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 717-469 | 4XXX5XXX6XXX8XXX · 4 holders which blocks → | VERIZON NORTH, INC. - PA | 0169 | SHELLSVL | PA |
| — | 717-471 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | LANCASTER | PA |
| — | 717-473 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PALMYRA | PA |
| — | 717-474 | 1XXX2XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DAUPHIN | PA |
| — | 717-475 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LANCASTER | PA |
| — | 717-477 | 2XXX3XXX5XXX6XXX · 2 holders which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | SHIPPENSBG | PA |
| — | 717-478 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | WRIGHTSVL | PA |
| — | 717-481 | 0XXX1XXX3XXX4XXX · 4 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | LANCASTER | PA |
| — | 717-482 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | HUMMELSTN | PA |
| — | 717-483 | 1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | ALLENSVL | PA |
| — | 717-484 | 3XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | WINDSTREAM D&E, INC. | 0165 | ADAMSTOWN | PA |
| — | 717-485 | 1XXX2XXX8XXX · 3 holders which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | MCONELLSBG | PA |
| — | 717-486 | 1XXX9XXX · 2 holders which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | MTHOLLYSPG | PA |
| — | 717-487 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | YORK | PA |
| — | 717-489 | 0XXX2XXX3XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | HERSHEY | PA |
| — | 717-491 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | CHAMBERSBG | PA |
| — | 717-492 | 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | MOUNT JOY | PA |
| — | 717-495 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | YORK | PA |
| — | 717-496 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | CHAMBERSBG | PA |
| — | 717-497 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | HARISBGZN1 | PA |
| — | 717-499 | not yet reported which blocks → | SPOK, INC. | 6630 | LANCASTER | PA |
| — | 717-500 | 0–9 XXXall 10 · 6 holders which blocks → | ONVOY, LLC - PA | 547E | HERSHEY | PA |
| — | 717-502 | 2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → | VERIZON NORTH, INC. - PA | 0169 | DILLSBURG | PA |
| — | 717-503 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HARISBGZN1 | PA |
| — | 717-505 | not yet reported which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | YORK | PA |
| — | 717-506 | 5XXX which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | MECHANCSBG | PA |
| — | 717-507 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LEBANON | PA |
| — | 717-508 | 4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | HERSHEY | PA |
| — | 717-509 | not yet reported which blocks → | CTSI, INC. - PA | 7513 | LANCASTER | PA |
| — | 717-511 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PA |
| — | 717-512 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | HARISBGZN1 | PA |
| — | 717-513 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | LEWISTOWN | PA |
| — | 717-514 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | HARISBGZN1 | PA |
| — | 717-515 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | YORK | PA |
| — | 717-516 | 0–9 XXXall 10 · 5 holders which blocks → | EXIANT COMMUNICATIONS LLC | 114J | MECHANCSBG | PA |
| — | 717-517 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LANCASTER | PA |
| — | 717-518 | not yet reported which blocks → | SPOK, INC. | 6630 | HARISBGZN1 | PA |
| — | 717-519 | 7XXX9XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | LANCASTER | PA |
| — | 717-520 | 6XXX which blocks → | VERIZON NORTH, INC. - PA (CONTEL) | 0170 | HERSHEY | PA |
| — | 717-521 | 0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | HANOVER | PA |
| — | 717-524 | 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | WINDSTREAM D & E SYSTEMS, INC. - PA | 4114 | HANOVER | PA |
| — | 717-526 | 5XXX8XXX9XXX · 3 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | HARISBGZN1 | PA |
| — | 717-527 | 1XXX3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | PORT ROYAL | PA |
| — | 717-528 | 1XXX2XXX3XXX6XXX9XXX · 4 holders which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | YORK SPG | PA |
| — | 717-529 | not yet reported which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | KIRKWOOD | PA |
| — | 717-530 | not yet reported which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | SHIPPENSBG | PA |
| — | 717-531 | not yet reported which blocks → | VERIZON NORTH, INC. - PA (CONTEL) | 0170 | HERSHEY | PA |
| — | 717-532 | none assigned yet which blocks → | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | SHIPPENSBG | PA |
| — | 717-533 | not yet reported which blocks → | VERIZON NORTH, INC. - PA (CONTEL) | 0170 | HERSHEY | PA |
| — | 717-534 | not yet reported which blocks → | VERIZON NORTH, INC. - PA (CONTEL) | 0170 | HERSHEY | 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.