NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 570-698 1XXX2XXX3XXX4XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 LAKE ARIEL PA
— 570-699 4XXX6XXX7XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TOWANDA PA
— 570-700 not yet reported which blocks → PA
— 570-704 3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WILKSBARRE PA
— 570-705 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 RINGTOWN PA
— 570-706 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → AT&T - LOCAL 7421 WILKSBARRE PA
— 570-707 0XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - PA 547E TIOGA PA
— 570-708 4XXX5XXX6XXX · 3 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 CNYNGHDRMS PA
— 570-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 570-713 0XXX4XXX5XXX7XXX8XXX9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 MILTON PA
— 570-714 not yet reported which blocks → CTSI, INC. - PA 7513 KINGSTON PA
— 570-715 4XXX5XXX6XXX8XXX · 2 holders which blocks → CTSI, INC. - PA 7513 MOUNTANTOP PA
— 570-716 not yet reported which blocks → LIMITLESS MOBILE, LLC 6921 MILTON PA
— 570-717 not yet reported which blocks → PA
— 570-718 2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → CTSI, INC. - PA 7513 KINGSTON PA
— 570-719 2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → CTSI, INC. - PA 7513 PLYMOUTH PA
— 570-722 4XXX5XXX6XXX7XXX · 4 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 WHITEHAVEN PA
— 570-723 not yet reported which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 WELLSBORO PA
— 570-724 not yet reported which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 WELLSBORO PA
— 570-725 1XXX5XXX8XXX · 3 holders which blocks → SUGAR VALLEY TEL. CO. 0206 LOGANTON PA
— 570-726 1XXX5XXX8XXX9XXX · 4 holders which blocks → BRIGHTSPEED OF PENNSYLVANIA, LLC 0209 MILL HALL PA
— 570-727 not yet reported which blocks → NORTH EASTERN PENNSYLVANIA TEL. CO. 0191 THOMPSON PA
— 570-729 2XXX3XXX4XXX5XXX6XXX9XXX · 6 holders which blocks → VERIZON NORTH, INC. - PA (QUAKER ST) 0201 BEACH LAKE PA
— 570-730 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 STROUDSBG PA
— 570-732 4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J JIM THORPE PA
— 570-733 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 NANTICOKE PA
— 570-735 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 NANTICOKE PA
— 570-736 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 6 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 NANTICOKE PA
— 570-739 5XXX6XXX7XXX8XXX · 4 holders which blocks → VERIZON NORTH, INC. - PA (QUAKER ST) 0201 FRIEDENSBG PA
— 570-740 3XXX4XXX6XXX9XXX · 4 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 NANTICOKE PA
— 570-742 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 MILTON PA
— 570-743 9XXX which blocks → VERIZON NORTH, INC. - PA (CONTEL) 0170 SELINSGRV PA
— 570-744 4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 LE RAYSVL PA
— 570-745 not yet reported which blocks → PENNSYLVANIA TEL. CO. 0197 OVAL PA
— 570-746 5XXX which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 WYALUSING PA
— 570-748 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 LOCK HAVEN PA
— 570-751 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 HAZLETON PA
— 570-752 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 BERWICK PA
— 570-753 1XXX2XXX4XXX6XXX9XXX · 4 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 AVIS PA
— 570-754 0XXX1XXX2XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → VERIZON NORTH, INC. - PA (QUAKER ST) 0201 AUBURN PA
— 570-756 not yet reported which blocks → NORTH EASTERN PENNSYLVANIA TEL. CO. 0191 JACKSON PA
— 570-758 6XXX which blocks → MAHANOY & MAHANTANGO TEL. CO. 0183 MANDATA PA
— 570-759 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 BERWICK PA
— 570-760 8XXX9XXX which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 WILKSBARRE PA
— 570-762 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILKSBARRE PA
— 570-763 4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J KINGSTON PA
— 570-766 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 CARBONDALE PA
— 570-767 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MONTROSE PA
— 570-769 3XXX5XXX8XXX9XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 WOOLRICH PA
— 570-770 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CTSI, INC. - PA 7513 SCRANTON PA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.