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
2001-06-18 717-563 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 DELTA PA
2001-06-18 717-644 0–9 XXXall 10 · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 LEBANON PA
2001-06-18 717-953 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 LEWISTOWN PA
2001-06-13 717-318 5XXX which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 YORK PA
2001-06-04 717-363 1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 LEWISTOWN PA
2001-05-31 717-339 4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → BRIGHTSPEED OF PENNSYLVANIA, LLC 0209 GETTYSBURG PA
2001-05-16 717-220 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → WINDSTREAM D & E SYSTEMS, INC. - PA 4114 HUMMELSTN PA
2001-05-04 717-298 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → WINDSTREAM D & E SYSTEMS, INC. - PA 4114 HERSHEY PA
2001-04-12 717-982 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARISBGZN2 PA
2001-02-28 717-842 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → WINDSTREAM D & E SYSTEMS, INC. - PA 4114 MILLERSVL PA
2001-02-16 717-253 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GETTYSBURG PA
2001-01-31 717-346 not yet reported which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HARISBGZN1 PA
— 717-201 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LANCASTER PA
— 717-202 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEBANON PA
— 717-203 not yet reported which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 LANCASTER PA
— 717-206 9XXX which blocks → SCHUYLKILL MOBILE FONE, INC. 6739 HARISBGZN1 PA
— 717-207 1XXX7XXX8XXX9XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 LANCASTER PA
— 717-209 0XXX1XXX2XXX6XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 LANCASTER PA
— 717-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 717-213 1XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
— 717-214 not yet reported which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HARISBGZN1 PA
— 717-215 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARISBGZN1 PA
— 717-217 9XXX which blocks → BRIGHTSPEED OF PENNSYLVANIA, LLC 0209 CHAMBERSBG PA
— 717-218 4XXX which blocks → BRIGHTSPEED OF PENNSYLVANIA, LLC 0209 CARLISLE PA
— 717-221 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
— 717-225 not yet reported which blocks → VERIZON NORTH, INC. - PA 0169 SPRING GRV PA
— 717-226 8XXX9XXX · 2 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 CARLISLE PA
— 717-227 6XXX7XXX · 2 holders which blocks → VERIZON NORTH, INC. - PA 0169 GLEN ROCK PA
— 717-228 none assigned yet which blocks → VERIZON PENNSYLVANIA, INC. 9208 LEBANON PA
— 717-229 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NORTH, INC. - PA 0169 JEFFERSON PA
— 717-230 1XXX4XXX6XXX7XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
— 717-231 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
— 717-232 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
— 717-233 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
— 717-234 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
— 717-235 not yet reported which blocks → VERIZON NORTH, INC. - PA 0169 GLEN ROCK PA
— 717-236 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
— 717-237 1XXX8XXX9XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
— 717-238 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 HARISBGZN1 PA
— 717-239 9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 LANCASTER PA
— 717-240 not yet reported which blocks → BRIGHTSPEED OF PENNSYLVANIA, LLC 0209 CARLISLE PA
— 717-241 8XXX which blocks → BRIGHTSPEED OF PENNSYLVANIA, LLC 0209 CARLISLE PA
— 717-242 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 LEWISTOWN PA
— 717-243 not yet reported which blocks → BRIGHTSPEED OF PENNSYLVANIA, LLC 0209 CARLISLE PA
— 717-244 not yet reported which blocks → VERIZON NORTH, INC. - PA 0169 RED LION PA
— 717-245 not yet reported which blocks → BRIGHTSPEED OF PENNSYLVANIA, LLC 0209 CARLISLE PA
— 717-246 not yet reported which blocks → VERIZON NORTH, INC. - PA 0169 RED LION PA
— 717-247 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 LEWISTOWN PA
— 717-248 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 LEWISTOWN PA
— 717-249 not yet reported which blocks → BRIGHTSPEED OF PENNSYLVANIA, LLC 0209 CARLISLE 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.