NumberResearchRecent prefix assignments
347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026
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
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Quick find in this area code:
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 570-480 | not yet reported which blocks → | SPOK, INC. | 6630 | MOOSIC | PA |
| — | 570-481 | 0–9 XXXall 10 · 10 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | CRESCO | PA |
| — | 570-482 | 1XXX5XXX6XXX · 3 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | MUNCY VLY | PA |
| — | 570-483 | 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | OLYPHANT | PA |
| — | 570-487 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | OLYPHANT | PA |
| — | 570-488 | not yet reported which blocks → | SOUTH CANAAN TEL. CO. | 0204 | WAYMART | PA |
| — | 570-489 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | OLYPHANT | PA |
| — | 570-490 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | NORTHUBRLD | PA |
| — | 570-491 | 0XXX1XXX3XXX6XXX7XXX8XXX · 5 holders which blocks → | VERIZON NORTH, INC. - PA (QUAKER ST) | 0201 | MATAMORAS | PA |
| — | 570-493 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | HONESDALE | PA |
| — | 570-494 | 3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | WILLIAMSPT | PA |
| — | 570-495 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | SUNBURY | PA |
| — | 570-496 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | SCRANTON | PA |
| — | 570-498 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PITTSTON | PA |
| — | 570-501 | not yet reported which blocks → | CTSI, INC. - PA | 7513 | HAZLETON | PA |
| — | 570-503 | 4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | HAMLIN | PA |
| — | 570-504 | 4XXX6XXX which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SCRANTON | PA |
| — | 570-506 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WILLIAMSPT | PA |
| — | 570-509 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | SHAMOKIN | PA |
| — | 570-510 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PITTSTON | PA |
| — | 570-511 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PA |
| — | 570-512 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → | ONVOY, LLC - PA | 547E | TROY | PA |
| — | 570-513 | 3XXX4XXX · 2 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | MANSFIELD | PA |
| — | 570-517 | 1XXX4XXX6XXX8XXX9XXX · 2 holders which blocks → | CTSI, INC. - PA | 7513 | STROUDSBG | PA |
| — | 570-520 | 0–9 XXXall 10 · 7 holders which blocks → | BANDWIDTH.COM CLEC, LLC - PA | 002F | BERWICK | PA |
| — | 570-521 | 1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | JERMYN | PA |
| — | 570-522 | not yet reported which blocks → | WINDSTREAM BUFFALO VALLEY, INC. | 0151 | LEWISBURG | PA |
| — | 570-523 | not yet reported which blocks → | WINDSTREAM BUFFALO VALLEY, INC. | 0151 | LEWISBURG | PA |
| — | 570-524 | not yet reported which blocks → | WINDSTREAM BUFFALO VALLEY, INC. | 0151 | LEWISBURG | PA |
| — | 570-525 | 1XXX2XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | EAGLESMERE | PA |
| — | 570-531 | 0–9 XXXall 10 · 8 holders which blocks → | ONVOY, LLC - PA | 547E | RENOVO | PA |
| — | 570-537 | 0XXX which blocks → | NORTH PENN TEL. CO. | 0192 | MILLERTON | PA |
| — | 570-538 | 8XXX which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | WATSONTOWN | PA |
| — | 570-539 | 1XXX5XXX7XXX9XXX · 3 holders which blocks → | VERIZON NORTH, INC. - PA (CONTEL) | 0170 | MTPLSANTML | PA |
| — | 570-542 | not yet reported which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | SHICKSHINY | PA |
| — | 570-543 | 1XXX2XXX3XXX5XXX6XXX · 3 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TAYLOR | PA |
| — | 570-544 | 0XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | MINERSVL | PA |
| — | 570-545 | 4XXX6XXX7XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | MANSFIELD | PA |
| — | 570-546 | not yet reported which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | MUNCY | PA |
| — | 570-547 | 4XXX which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | MONTGOMERY | PA |
| — | 570-549 | 0XXX which blocks → | NORTH PENN TEL. CO. | 0192 | ROSEVILLE | PA |
| — | 570-552 | not yet reported which blocks → | CTSI, INC. - PA | 7513 | WILKSBARRE | PA |
| — | 570-553 | 3XXX5XXX · 2 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | ST JOSEPH | PA |
| — | 570-554 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | MT CARMEL | PA |
| — | 570-555 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | DIR ASST | PA |
| — | 570-557 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NEWMILFORD | PA |
| — | 570-558 | not yet reported which blocks → | CTSI, INC. - PA | 7513 | SCRANTON | PA |
| — | 570-559 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | VERIZON NORTH, INC. - PA (QUAKER ST) | 0201 | SHOHOLA | PA |
| — | 570-561 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | XO COMMUNICATIONS SERVICES, INC. - PA | 7341 | SCRANTON | PA |
| — | 570-562 | 5XXX6XXX8XXX · 2 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | TAYLOR | PA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.