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 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
— 717-829 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARISBGZN1 PA
— 717-831 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J HARISBGZN2 PA
— 717-832 4XXX5XXX9XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PALMYRA PA
— 717-833 2XXX3XXX4XXX5XXX6XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PALMYRA PA
— 717-834 1XXX2XXX7XXX · 3 holders which blocks → BRIGHTSPEED OF PENNSYLVANIA, LLC 0209 DUNCANNON PA
— 717-838 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PALMYRA PA
— 717-840 not yet reported which blocks → VERIZON NORTH, INC. - PA 0169 YORK PA
— 717-841 0XXX2XXX4XXX5XXX6XXX · 4 holders which blocks → VERIZON NORTH, INC. - PA 0169 YORK PA
— 717-843 not yet reported which blocks → VERIZON NORTH, INC. - PA 0169 YORK PA
— 717-844 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LANCASTER PA
— 717-845 not yet reported which blocks → VERIZON NORTH, INC. - PA 0169 YORK PA
— 717-846 not yet reported which blocks → VERIZON NORTH, INC. - PA 0169 YORK PA
— 717-848 0XXX which blocks → VERIZON NORTH, INC. - PA 0169 YORK PA
— 717-849 not yet reported which blocks → VERIZON NORTH, INC. - PA 0169 YORK PA
— 717-851 8XXX which blocks → VERIZON NORTH, INC. - PA 0169 YORK PA
— 717-852 5XXX which blocks → VERIZON NORTH, INC. - PA 0169 YORK PA
— 717-853 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 MARYSVILLE PA
— 717-854 not yet reported which blocks → VERIZON NORTH, INC. - PA 0169 YORK PA
— 717-855 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → VERIZON NORTH, INC. - PA 0169 YORK PA
— 717-856 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARISBGZN1 PA
— 717-859 0XXX9XXX · 2 holders which blocks → WINDSTREAM D&E, INC. 0165 AKRON PA
— 717-860 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHAMBERSBG PA
— 717-861 0XXX3XXX4XXX · 3 holders which blocks → VERIZON NORTH, INC. - PA 0169 JONESTOWN PA
— 717-862 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NORTH, INC. - PA 0169 AIRVILLE PA
— 717-865 not yet reported which blocks → VERIZON NORTH, INC. - PA 0169 JONESTOWN PA
— 717-866 not yet reported which blocks → VERIZON NORTH, INC. - PA 0169 MYERSTOWN PA
— 717-867 9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 ANNVILLE PA
— 717-868 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - PA 547E ANNVILLE PA
— 717-870 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 YORK PA
— 717-871 3XXX7XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 MILLERSVL PA
— 717-872 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 MILLERSVL PA
— 717-873 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 YORK PA
— 717-876 1XXX3XXX6XXX8XXX · 3 holders which blocks → ONVOY, LLC - PA 547E MILLERSVL PA
— 717-877 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARISBGZN1 PA
— 717-878 2XXX3XXX which blocks → BRIGHTSPEED OF PENNSYLVANIA, LLC 0209 BLRDGSUMMT PA
— 717-880 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 YORK PA
— 717-886 2XXX3XXX4XXX5XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
— 717-887 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 YORK PA
— 717-891 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 YORK PA
— 717-892 0XXX2XXX4XXX5XXX8XXX9XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 LANDISVL PA
— 717-896 0XXX1XXX5XXX6XXX7XXX · 4 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 HALIFAX PA
— 717-898 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 LANDISVL PA
— 717-899 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 6 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 MCVEYTOWN PA
— 717-900 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - PA 547E YORK PA
— 717-901 not yet reported which blocks → CTSI, INC. - PA 7513 HARISBGZN1 PA
— 717-902 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CTSI, INC. - PA 7513 MIDDLETOWN PA
— 717-903 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARISBGZN1 PA
— 717-905 0–9 XXXall 10 · 7 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 ELIZABTHVL PA
— 717-907 not yet reported which blocks → SPOK, INC. 6630 LANCASTER PA
— 717-909 not yet reported which blocks → CTSI, INC. - PA 7513 HARISBGZN1 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.