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
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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 |
|---|---|---|---|---|---|---|
| — | 570-273 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | NESQUHONNG | PA |
| — | 570-275 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | DANVILLE | PA |
| — | 570-276 | 0XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | GIRARDVL | PA |
| — | 570-277 | 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | NEWPHLDLPH | PA |
| — | 570-278 | not yet reported which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | MONTROSE | PA |
| — | 570-280 | 0–9 XXXall 10 · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | CARBONDALE | PA |
| — | 570-281 | 0XXX2XXX3XXX6XXX7XXX8XXX · 5 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | CARBONDALE | PA |
| — | 570-282 | 9XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | CARBONDALE | PA |
| — | 570-283 | 7XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | KINGSTON | PA |
| — | 570-285 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | KINGSTON | PA |
| — | 570-286 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | SUNBURY | PA |
| — | 570-287 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | KINGSTON | PA |
| — | 570-288 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | KINGSTON | PA |
| — | 570-289 | 2XXX3XXX6XXX · 3 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | BROOKLYN | PA |
| — | 570-291 | 2XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | OLYPHANT | PA |
| — | 570-292 | not yet reported which blocks → | LIMITLESS MOBILE, LLC | 6921 | POTTSVILLE | PA |
| — | 570-293 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | PAETEC ITEL, LLC | 829J | DANVILLE | PA |
| — | 570-294 | 6XXX7XXX8XXX9XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | POTTSVILLE | PA |
| — | 570-296 | not yet reported which blocks → | VERIZON NORTH, INC. - PA (QUAKER ST) | 0201 | MILFORD | PA |
| — | 570-297 | not yet reported which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | TROY | PA |
| — | 570-298 | 1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | NOXEN | PA |
| — | 570-300 | 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PITTSTON | PA |
| — | 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 |
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.