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
2008-03-27 717-884 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E HARISBGZN1 PA
2008-03-13 717-688 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 NEW OXFORD PA
2008-02-14 717-961 0–9 XXXall 10 · 5 holders which blocks → BRIGHTSPEED OF PENNSYLVANIA, LLC 0209 CARLISLE PA
2008-02-05 717-454 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J LEBANON PA
2007-12-31 717-889 0–9 XXXall 10 · 3 holders which blocks → YMAX COMMUNICATIONS CORP. - PA 283E HARISBGZN1 PA
2007-11-08 717-457 not yet reported which blocks → COMCAST IP PHONE, LLC 318J FAIRFIELD PA
2007-11-08 717-568 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 LITITZ PA
2007-11-08 717-879 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 MANHEIM PA
2007-10-22 717-598 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LANCASTER PA
2007-10-18 717-480 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2007-09-26 717-614 0–9 XXXall 10 · 6 holders which blocks → CTSI, INC. - PA 7513 HARISBGZN1 PA
2007-09-21 717-414 0–9 XXXall 10 · 6 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 CHAMBERSBG PA
2007-08-15 717-875 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LANCASTER PA
2007-07-25 717-416 not yet reported which blocks → COMCAST IP PHONE, LLC 318J YORK SPG PA
2007-07-09 717-435 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 LANCASTER PA
2007-06-27 717-945 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J LANCASTER PA
2007-06-26 717-885 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J YORK PA
2007-05-09 717-525 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2007-03-15 717-668 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 YORK PA
2007-02-20 717-425 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 HARISBGZN1 PA
2006-12-28 717-407 0–9 XXXall 10 · 7 holders which blocks → COMCAST IP PHONE, LLC 318J GAP PA
2006-11-02 717-636 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 NEWBLOMFLD PA
2006-10-16 717-406 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 LANCASTER PA
2006-09-18 717-654 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 YORK PA
2006-09-18 717-824 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LANCASTER PA
2006-07-07 717-650 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 YORK PA
2006-06-29 717-522 0–9 XXXall 10 · 8 holders which blocks → COMCAST IP PHONE, LLC 318J MOUNTVILLE PA
2006-06-29 717-604 0XXX1XXX2XXX3XXX4XXX7XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J MARIETTA PA
2006-06-27 717-498 not yet reported which blocks → COMCAST IP PHONE, LLC 318J MERCERSBG PA
2006-06-27 717-595 not yet reported which blocks → COMCAST IP PHONE, LLC 318J ST THOMAS PA
2006-06-27 717-643 not yet reported which blocks → COMCAST IP PHONE, LLC 318J GREENCASTL PA
2006-05-18 717-695 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J HARISBGZN1 PA
2006-05-12 717-830 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHAMBERSBG PA
2006-05-02 717-504 0–9 XXXall 10 · 6 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 CHAMBERSBG PA
2006-03-06 717-715 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LANCASTER PA
2006-02-01 717-639 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEBANON PA
2006-01-10 717-419 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LANCASTER PA
2006-01-10 717-490 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LANCASTER PA
2005-11-30 717-434 0–9 XXXall 10 · 4 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 YORK PA
2005-07-01 717-405 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LANCASTER PA
2005-04-28 717-823 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LANCASTER PA
2005-04-27 717-460 0–9 XXXall 10 · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
2004-03-23 717-395 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 HARISBGZN1 PA
2003-11-14 717-943 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J HARISBGZN1 PA
2003-07-07 717-357 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 BIGLERVL PA
2003-02-18 717-662 not yet reported which blocks → WINDSTREAM D & E SYSTEMS, INC. - PA 4114 MOUNTVILLE PA
2003-01-29 717-544 0–9 XXXwhole prefix which blocks → WINDSTREAM D & E SYSTEMS, INC. - PA 4114 LANCASTER PA
2002-12-27 717-769 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 LEBANON PA
2002-12-18 717-784 0–9 XXXwhole prefix which blocks → CORE COMMUNICATIONS, INC. - PA 3806 MILLERSTN PA
2002-12-18 717-785 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 BLRDGSUMMT 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.