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 717
VERIZON PENNSYLVANIA, INC. 121
BRIGHTSPEED OF PENNSYLVANIA, LLC 80
NEW CINGULAR WIRELESS PCS, LLC - DC 77
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 72
LEVEL 3 COMMUNICATIONS, LLC - PA 65
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
— 717-684 not yet reported which blocks → BRIGHTSPEED OF PENNSYLVANIA, LLC 0209 COLUMBIA PA
— 717-685 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 ANNVILLE PA
— 717-687 1XXX2XXX4XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 STRASBURG PA
— 717-689 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 ELIZABTHTN PA
— 717-691 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 MECHANCSBG PA
— 717-692 not yet reported which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 MILLERSBG PA
— 717-694 2XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → BRIGHTSPEED OF PENNSYLVANIA, LLC 0209 RICHFIELD PA
— 717-697 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 MECHANCSBG PA
— 717-699 7XXX8XXX9XXX · 3 holders which blocks → VERIZON NORTH, INC. - PA 0169 YORK PA
— 717-700 not yet reported which blocks → PA
— 717-701 4XXX5XXX7XXX8XXX · 4 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 CARLISLE PA
— 717-702 0XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 MIDDLETOWN PA
— 717-703 6XXX7XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HARISBGZN1 PA
— 717-704 2XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HARISBGZN2 PA
— 717-705 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
— 717-707 1XXX2XXX7XXX8XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HERSHEY PA
— 717-708 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LEBANON PA
— 717-709 not yet reported which blocks → BRIGHTSPEED OF PENNSYLVANIA, LLC 0209 CHAMBERSBG PA
— 717-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 717-712 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
— 717-713 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → WINDSTREAM D & E SYSTEMS, INC. - PA 4114 CARLISLE PA
— 717-717 not yet reported which blocks → PA
— 717-718 5XXX6XXX7XXX8XXX · 2 holders which blocks → CTSI, INC. - PA 7513 YORK PA
— 717-720 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
— 717-721 0XXX which blocks → WINDSTREAM D&E, INC. 0165 EPHRATA PA
— 717-724 5XXX6XXX7XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J HARISBGZN1 PA
— 717-725 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LANCASTER PA
— 717-728 6XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
— 717-729 3XXX4XXX9XXX · 2 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 CHAMBERSBG PA
— 717-730 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
— 717-731 2XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
— 717-732 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
— 717-733 not yet reported which blocks → WINDSTREAM D&E, INC. 0165 EPHRATA PA
— 717-734 4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → BRIGHTSPEED OF PENNSYLVANIA, LLC 0209 EWATERFORD PA
— 717-735 9XXX which blocks → WINDSTREAM D & E SYSTEMS, INC. - PA 4114 LANCASTER PA
— 717-737 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
— 717-738 not yet reported which blocks → WINDSTREAM D&E, INC. 0165 EPHRATA PA
— 717-739 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 SPRING GRV PA
— 717-741 not yet reported which blocks → VERIZON NORTH, INC. - PA 0169 YORK PA
— 717-742 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 LANDISVL PA
— 717-744 0XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 JEFFERSON PA
— 717-746 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 STEWARTSTN PA
— 717-747 1XXX3XXX4XXX6XXX · 2 holders which blocks → VERIZON NORTH, INC. - PA 0169 YORK PA
— 717-749 1XXX8XXX9XXX · 3 holders which blocks → BRIGHTSPEED OF PENNSYLVANIA, LLC 0209 WAYNESBORO PA
— 717-751 8XXX which blocks → VERIZON NORTH, INC. - PA 0169 YORK PA
— 717-752 1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 GETTYSBURG PA
— 717-754 0–9 XXXwhole prefix which blocks → ONVOY, LLC - PA 547E HARISBGZN1 PA
— 717-755 not yet reported which blocks → VERIZON NORTH, INC. - PA 0169 YORK PA
— 717-756 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
— 717-757 8XXX which blocks → VERIZON NORTH, INC. - PA 0169 YORK 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.