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
2015-08-28 717-997 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 ADAMSTOWN PA
2015-08-26 717-660 0–9 XXXall 10 · 7 holders which blocks → COMCAST IP PHONE, LLC 318J CHAMBERSBG PA
2015-08-11 717-874 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 LANCASTER PA
2015-08-11 717-893 0–9 XXXall 10 · 5 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 YORK PA
2015-08-10 717-869 0–9 XXXall 10 · 6 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 LANCASTER PA
2015-06-04 717-904 2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 DUNCANNON PA
2015-04-03 717-562 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E HARISBGZN1 PA
2015-01-26 717-937 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F SCHAEFESTN PA
2015-01-22 717-897 0XXX1XXX3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F FAWN GROVE PA
2015-01-15 717-971 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J SHELLSVL PA
2015-01-14 717-603 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2014-12-23 717-913 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J SHIPPENSBG PA
2014-12-22 717-594 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J NEWBLOMFLD PA
2014-12-11 717-992 0–9 XXXall 10 · 4 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 COLUMBIA PA
2014-11-18 717-510 0–9 XXXall 10 · 6 holders which blocks → NUSO, LLC 551G HARISBGZN1 PA
2014-11-07 717-962 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J CARLISLE PA
2014-10-28 717-690 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F LANCASTER PA
2014-09-25 717-775 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARISBGZN1 PA
2014-09-16 717-601 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 CARLISLE PA
2014-08-11 717-984 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J LANCASTER PA
2014-07-15 717-216 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HARISBGZN1 PA
2014-01-28 717-988 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HARISBGZN1 PA
2014-01-14 717-753 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 CHAMBERSBG PA
2013-09-04 717-353 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 NEW OXFORD PA
2013-08-05 717-719 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 COLUMBIA PA
2013-06-17 717-969 0–9 XXXall 10 · 8 holders which blocks → COMCAST IP PHONE, LLC 318J HANOVER PA
2013-05-08 717-883 0–9 XXXall 10 · 9 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F FRYSTOWN PA
2013-01-09 717-963 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - PA 547E HARISBGZN1 PA
2012-12-20 717-317 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2012-09-26 717-947 0–9 XXXall 10 · 7 holders which blocks → CTSI, INC. - PA 7513 LANCASTER PA
2012-08-31 717-430 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 YORK PA
2012-08-27 717-617 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LANCASTER PA
2012-08-24 717-847 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LANCASTER PA
2012-08-17 717-472 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 YORK PA
2012-07-23 717-316 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 HANOVER PA
2012-07-06 717-706 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 CARLISLE PA
2012-07-05 717-726 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 LEWISBERRY PA
2012-06-26 717-888 0–9 XXXall 10 · 4 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 HARISBGZN1 PA
2012-06-05 717-547 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 HARISBGZN1 PA
2012-03-12 717-208 0–9 XXXall 10 · 5 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 LANCASTER PA
2011-12-16 717-839 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARISBGZN1 PA
2011-12-09 717-925 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LANCASTER PA
2011-12-02 717-850 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 YORK PA
2011-10-11 717-942 0–9 XXXall 10 · 7 holders which blocks → COMCAST IP PHONE, LLC 318J GLEN ROCK PA
2011-09-30 717-693 0–9 XXXall 10 · 3 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 COLUMBIA PA
2011-09-22 717-736 0–9 XXXall 10 · 5 holders which blocks → WINDSTREAM D & E SYSTEMS, INC. - PA 4114 HARISBGZN1 PA
2011-09-19 717-836 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2011-07-15 717-863 0–9 XXXall 10 · 7 holders which blocks → WINDSTREAM D&E, INC. 0165 EPHRATA PA
2011-06-16 717-287 0–9 XXXall 10 · 5 holders which blocks → WINDSTREAM D & E SYSTEMS, INC. - PA 4114 ELIZABTHTN PA
2011-05-16 717-743 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 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.