NumberResearchRecent prefix assignments
372 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/30/2026
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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Quick find in this area code:
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 570-301 | 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | WILKSBARRE | PA |
| — | 570-307 | 9XXX which blocks → | CTSI, INC. - PA | 7513 | OLYPHANT | PA |
| — | 570-311 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PA |
| — | 570-313 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PITTSTON | PA |
| — | 570-315 | not yet reported which blocks → | SPOK, INC. | 6630 | SCRANTON | PA |
| — | 570-317 | 0–9 XXXall 10 · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | BLOOMSBURG | PA |
| — | 570-318 | 6XXX7XXX8XXX9XXX · 2 holders which blocks → | SCHUYLKILL MOBILE FONE, INC. | 6739 | WILLIAMSPT | PA |
| — | 570-320 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | WILLIAMSPT | PA |
| — | 570-321 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | WILLIAMSPT | PA |
| — | 570-322 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | WILLIAMSPT | PA |
| — | 570-323 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | WILLIAMSPT | PA |
| — | 570-324 | 1XXX4XXX7XXX8XXX · 4 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | LIBERTY | PA |
| — | 570-325 | 1XXX6XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | JIM THORPE | PA |
| — | 570-326 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | WILLIAMSPT | PA |
| — | 570-327 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | WILLIAMSPT | PA |
| — | 570-329 | 6XXX7XXX8XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | WILLIAMSPT | PA |
| — | 570-330 | 4XXX6XXX7XXX · 2 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | SCRANTON | PA |
| — | 570-331 | 1XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | KINGSTON | PA |
| — | 570-333 | 2XXX3XXX6XXX7XXX8XXX · 5 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | CTR MORELD | PA |
| — | 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 |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.