NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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 570
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| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 570-338 | 1XXX2XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | KINGSTON | PA |
| — | 570-339 | 7XXX8XXX9XXX · 3 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | MT CARMEL | PA |
| — | 570-340 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | SCRANTON | PA |
| — | 570-341 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | SCRANTON | PA |
| — | 570-342 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | SCRANTON | PA |
| — | 570-343 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | SCRANTON | PA |
| — | 570-344 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | SCRANTON | PA |
| — | 570-345 | 5XXX7XXX9XXX · 3 holders which blocks → | VERIZON NORTH, INC. - PA (QUAKER ST) | 0201 | PINE GROVE | PA |
| — | 570-346 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | SCRANTON | PA |
| — | 570-347 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | SCRANTON | PA |
| — | 570-348 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | SCRANTON | PA |
| — | 570-350 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | STROUDSBG | PA |
| — | 570-351 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | SCRANTON | PA |
| — | 570-352 | 0–9 XXXall 10 · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | HONESDALE | PA |
| — | 570-353 | 1XXX3XXX4XXX5XXX8XXX · 3 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | MORRIS | PA |
| — | 570-356 | 0XXX1XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | CATAWISSA | PA |
| — | 570-357 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PITTSTON | PA |
| — | 570-358 | 2XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | ULSTER | PA |
| — | 570-363 | 3XXX4XXX8XXX · 3 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | NEW ALBANY | PA |
| — | 570-364 | 0XXX3XXX4XXX6XXX · 3 holders which blocks → | FRONTIER COMMUNICATIONS OF CANTON, LLC | 0152 | LEROY | PA |
| — | 570-365 | 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → | VERIZON NORTH, INC. - PA (CONTEL) | 0170 | MTPLSANTML | PA |
| — | 570-366 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | ORWIGSBURG | PA |
| — | 570-367 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | LOCK HAVEN | PA |
| — | 570-368 | 0XXX6XXX9XXX · 2 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | WILLIAMSPT | PA |
| — | 570-370 | not yet reported which blocks → | SCHUYLKILL MOBILE FONE, INC. | 6739 | BLOOMSBURG | PA |
| — | 570-372 | 6XXX7XXX8XXX9XXX · 4 holders which blocks → | VERIZON NORTH, INC. - PA (CONTEL) | 0170 | SELINSGRV | PA |
| — | 570-373 | 0XXX2XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | KULPMONT | PA |
| — | 570-374 | not yet reported which blocks → | VERIZON NORTH, INC. - PA (CONTEL) | 0170 | SELINSGRV | PA |
| — | 570-376 | 1XXX6XXX7XXX8XXX · 3 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | MIDLEBYCTR | PA |
| — | 570-378 | 4XXX7XXX8XXX · 2 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | LAKEWINOLA | PA |
| — | 570-379 | 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | WAPWALLOPN | PA |
| — | 570-380 | 0XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | BLOOMSBURG | PA |
| — | 570-382 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | OLYPHANT | PA |
| — | 570-383 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | OLYPHANT | PA |
| — | 570-384 | not yet reported which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | NUREMBERG | PA |
| — | 570-385 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | SCHUYLKHVN | PA |
| — | 570-386 | 0XXX9XXX · 2 holders which blocks → | VERIZON NORTH, INC. - PA (CONTEL) | 0170 | MANTZVILLE | PA |
| — | 570-387 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | BLOOMSBURG | PA |
| — | 570-388 | 1XXX5XXX7XXX8XXX · 2 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | HARDING | PA |
| — | 570-389 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | BLOOMSBURG | PA |
| — | 570-390 | 0–9 XXXall 10 · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | HAWLEY | PA |
| — | 570-392 | 2XXX3XXX4XXX6XXX7XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | WYOMING | PA |
| — | 570-394 | 0–9 XXXall 10 · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | BLOOMSBURG | PA |
| — | 570-395 | 2XXX4XXX5XXX8XXX · 4 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | WARREN CTR | PA |
| — | 570-397 | 0–9 XXXall 10 · 9 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | JERMYN | PA |
| — | 570-398 | 6XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | JERSEYSHOR | PA |
| — | 570-401 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HAZLETON | PA |
| — | 570-402 | 5XXX6XXX · 2 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | SAYLORSBG | PA |
| — | 570-403 | 0XXX2XXX4XXX6XXX8XXX · 4 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | MOUNTANTOP | PA |
| — | 570-406 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | TRUCKSVL | PA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.