NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

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
VERIZON PENNSYLVANIA, INC. 156
COMMONWEALTH TELEPHONE COMPANY LLC 75
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 75
NEW CINGULAR WIRELESS PCS, LLC - DC 68
CORE COMMUNICATIONS, INC. - PA 62
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 570-407 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PITTSTON PA
— 570-408 not yet reported which blocks → CTSI, INC. - PA 7513 WILKSBARRE PA
— 570-409 2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → VERIZON NORTH, INC. - PA (QUAKER ST) 0201 MILFORD PA
— 570-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 570-413 0XXX1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 JIM THORPE PA
— 570-414 4XXX8XXX9XXX · 3 holders which blocks → CTSI, INC. - PA 7513 MOOSIC PA
— 570-416 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → CTSI, INC. - PA 7513 BLOOMSBURG PA
— 570-417 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WILKSBARRE PA
— 570-419 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WILLIAMSPT PA
— 570-420 7XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 STROUDSBG PA
— 570-421 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 STROUDSBG PA
— 570-422 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 STROUDSBG PA
— 570-424 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 STROUDSBG PA
— 570-425 0XXX1XXX7XXX8XXX · 4 holders which blocks → MAHANOY & MAHANTANGO TEL. CO. 0183 MANDATA PA
— 570-426 0XXX3XXX5XXX8XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 STROUDSBG PA
— 570-427 0XXX1XXX3XXX6XXX7XXX · 5 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 WEATHERLY PA
— 570-429 3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 ST CLAIR PA
— 570-430 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PITTSTON PA
— 570-431 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 BUSHKILL PA
— 570-432 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K MONTROSE PA
— 570-433 1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → VERIZON NORTH, INC. - PA (QUAKER ST) 0201 LOYALSOCK PA
— 570-434 not yet reported which blocks → NORTH EASTERN PENNSYLVANIA TEL. CO. 0191 HARFORD PA
— 570-435 1XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON NORTH, INC. - PA (QUAKER ST) 0201 LOYALSOCK PA
— 570-436 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HAZLETON PA
— 570-437 0XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 WASHIGTNVL PA
— 570-440 not yet reported which blocks → SCHUYLKILL MOBILE FONE, INC. 6739 POTTSVILLE PA
— 570-443 1XXX3XXX5XXX6XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 WHITEHAVEN PA
— 570-444 not yet reported which blocks → LIMITLESS MOBILE, LLC 6921 MILTON PA
— 570-446 1XXX3XXX5XXX6XXX7XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PITTSTON PA
— 570-447 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WILLIAMSPT PA
— 570-448 not yet reported which blocks → NORTH EASTERN PENNSYLVANIA TEL. CO. 0191 PLEASANTMT PA
— 570-449 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 POTTSVILLE PA
— 570-450 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 HAZLETON PA
— 570-451 5XXX6XXX8XXX9XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 MOOSIC PA
— 570-452 8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 NORTHUBRLD PA
— 570-453 4XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 HAZLETON PA
— 570-454 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 HAZLETON PA
— 570-455 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 HAZLETON PA
— 570-456 1XXX2XXX4XXX5XXX8XXX9XXX · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MOOSIC PA
— 570-457 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 MOOSIC PA
— 570-458 1XXX2XXX3XXX7XXX8XXX · 4 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 MILLVILLE PA
— 570-459 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 HAZLETON PA
— 570-460 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 STROUDSBG PA
— 570-461 2XXX which blocks → DEPOSIT TEL. CO., INC. 0089 SHERMAN PA
— 570-462 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 SHENANDOAH PA
— 570-465 not yet reported which blocks → NORTH EASTERN PENNSYLVANIA TEL. CO. 0191 NEWMILFORD PA
— 570-466 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PITTSTON PA
— 570-467 not yet reported which blocks → FRONTIER COMMUNICATIONS OF LAKEWOOD, LLC 0178 LAKEWOOD PA
— 570-469 0XXX2XXX3XXX4XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 LACEYVILLE PA
— 570-470 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HONESDALE 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.