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 814
VERIZON PENNSYLVANIA, INC. 110
VERIZON NORTH, INC. - PA 98
WINDSTREAM PENNSYLVANIA, INC. 71
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 59
LEVEL 3 COMMUNICATIONS, LLC - PA 48
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
2009-03-12 814-501 0–9 XXXall 10 · 3 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 CALLENSBG PA
2009-03-12 814-513 0XXX2XXX · 2 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 VENUS PA
2009-03-12 814-668 0–9 XXXwhole prefix which blocks → CORE COMMUNICATIONS, INC. - PA 3806 ROCKLAND PA
2009-03-12 814-815 0–9 XXXall 10 · 2 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 WSPRINGFLD PA
2009-03-12 814-982 0–9 XXXwhole prefix which blocks → CORE COMMUNICATIONS, INC. - PA 3806 TOWNVILLE PA
2009-03-12 814-993 0–9 XXXall 10 · 3 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 BREEZEWOOD PA
2009-03-09 814-305 2XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → IDT AMERICA, CORP. - PA 213C THREE SPG PA
2009-03-05 814-415 not yet reported which blocks → CORE COMMUNICATIONS, INC. - PA 3806 FAIRVIEW PA
2009-02-04 814-426 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K MILLPORT PA
2009-01-19 814-626 0–9 XXXall 10 · 5 holders which blocks → YMAX COMMUNICATIONS CORP. - PA 283E ALTOONA PA
2008-12-05 814-631 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J ALTOONA PA
2008-12-05 814-920 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J ERIE PA
2008-10-01 814-639 not yet reported which blocks → COMCAST IP PHONE, LLC 318J PT MATILDA PA
2008-09-09 814-640 not yet reported which blocks → COMCAST IP PHONE, LLC 318J CORSICA PA
2008-09-09 814-751 not yet reported which blocks → COMCAST IP PHONE, LLC 318J SIGEL PA
2008-09-09 814-821 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → WINDSTREAM PENNSYLVANIA, INC. 0176 BROCKWAY PA
2008-09-09 814-901 not yet reported which blocks → COMCAST IP PHONE, LLC 318J RIMERSBURG PA
2008-09-09 814-903 not yet reported which blocks → COMCAST IP PHONE, LLC 318J RIDGWAY PA
2008-08-19 814-681 0XXX3XXX6XXX · 3 holders which blocks → IDT AMERICA, CORP. - PA 213C SLIGO PA
2008-08-19 814-918 0XXX1XXX3XXX4XXX7XXX8XXX · 4 holders which blocks → IDT AMERICA, CORP. - PA 213C SHIPPENVL PA
2008-08-19 814-980 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → IDT AMERICA, CORP. - PA 213C STRATTANVL PA
2008-08-19 814-992 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → IDT AMERICA, CORP. - PA 213C KNOX PA
2008-08-14 814-799 0XXX3XXX4XXX5XXX7XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F ALTOONA PA
2008-07-31 814-636 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F ERIE PA
2008-07-11 814-670 0XXX1XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → COMCAST IP PHONE, LLC 318J OIL CITY PA
2008-06-24 814-792 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F JOHNSTOWN PA
2008-06-12 814-830 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - PA 547E BERLIN PA
2008-05-12 814-855 3XXX which blocks → IDT AMERICA, CORP. - PA 213C MARKLESBG PA
2008-04-28 814-650 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALTOONA PA
2008-02-21 814-750 0XXX which blocks → IDT AMERICA, CORP. - PA 213C BEDFORDVLY PA
2007-10-22 814-904 1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 2 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SHINGLEHOS PA
2007-10-11 814-597 not yet reported which blocks → COMCAST IP PHONE, LLC 318J THREE SPG PA
2007-09-25 814-919 0XXX1XXX2XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → IDT AMERICA, CORP. - PA 213C WARIRSMARK PA
2007-09-14 814-586 0XXX1XXX · 2 holders which blocks → COMCAST IP PHONE, LLC 318J ZION PA
2007-09-07 814-852 0–9 XXXall 10 · 3 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 STATECOLLG PA
2007-07-17 814-380 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 BELLEFONTE PA
2007-04-24 814-908 0XXX2XXX4XXX · 3 holders which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - PA 422C CLINTONVL PA
2007-04-18 814-721 not yet reported which blocks → COMCAST IP PHONE, LLC 318J MARKLESBG PA
2007-04-18 814-819 not yet reported which blocks → COMCAST IP PHONE, LLC 318J MCONELLSTN PA
2007-04-10 814-714 not yet reported which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - PA 422C SOMERSET PA
2007-04-10 814-775 not yet reported which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - PA 422C TITUSVILLE PA
2007-03-30 814-638 0XXX1XXX6XXX9XXX · 4 holders which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - PA 422C COCHRANTON PA
2007-03-29 814-213 not yet reported which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - PA 422C CONNEAUTLK PA
2007-03-29 814-783 not yet reported which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - PA 422C SAEGERTOWN PA
2007-03-26 814-645 not yet reported which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - PA 422C GUYS MILLS PA
2007-03-26 814-785 not yet reported which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - PA 422C TOWNVILLE PA
2007-03-26 814-818 not yet reported which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - PA 422C LINESVILLE PA
2007-03-20 814-660 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J ALTOONA PA
2007-03-07 814-840 0–9 XXXall 10 · 7 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K FAIRVIEW PA
2007-02-26 814-859 1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K ALBION 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.