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 724
VERIZON PENNSYLVANIA, INC. 166
TELEPORT COMMUNICATIONS AMERICA, LLC - PA 74
LEVEL 3 COMMUNICATIONS, LLC - PA 69
NEW CINGULAR WIRELESS PCS, LLC - IL 60
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 59
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
2008-04-21 724-814 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 CRIDERSCOR PA
2008-04-10 724-750 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J EMLENTON PA
2008-02-21 724-919 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KITTANNING PA
2008-01-10 724-320 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - PA 547E UNIONTOWN PA
2007-12-13 724-757 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 GREENSBURG PA
2007-11-21 724-985 2XXX3XXX4XXX5XXX · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K TRANSFER PA
2007-11-13 724-231 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → IDT AMERICA, CORP. - PA 213C BOBTOWN PA
2007-11-13 724-358 0XXX1XXX3XXX4XXX7XXX · 3 holders which blocks → IDT AMERICA, CORP. - PA 213C GREENSBORO PA
2007-11-13 724-501 0XXX1XXX5XXX7XXX · 4 holders which blocks → IDT AMERICA, CORP. - PA 213C RICES LDG PA
2007-11-13 724-692 0XXX6XXX7XXX · 3 holders which blocks → IDT AMERICA, CORP. - PA 213C JEFFERSN PA
2007-11-12 724-319 0XXX3XXX4XXX6XXX7XXX · 5 holders which blocks → IDT AMERICA, CORP. - PA 213C CARMICHALS PA
2007-11-12 724-720 0–9 XXXall 10 · 2 holders which blocks → CONSOLIDATED COMMUNICATIONS OF PENNSYLVANIA CO 0193 CRIDERSCOR PA
2007-08-23 724-683 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 ROCHESTER PA
2007-05-21 724-201 0–9 XXXall 10 · 5 holders which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - PA 422C ELLWOOD CY PA
2007-04-20 724-232 0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 3 holders which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - PA 422C EAST BRADY PA
2007-04-18 724-771 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 GREENSBURG PA
2007-03-29 724-629 not yet reported which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - PA 422C WESTFORD PA
2007-02-07 724-719 0–9 XXXall 10 · 5 holders which blocks → FULL SERVICE NETWORK LP 7820 WEXFORD PA
2006-11-14 724-591 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 CRIDERSCOR PA
2006-10-06 724-885 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → PYMATUNING INDEPENDENT TELEPHONE COMPANY - PA 858D GREENVILLE PA
2006-10-04 724-892 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → IDT AMERICA, CORP. - PA 213C MCLELANDTN PA
2006-09-27 724-841 0–9 XXXall 10 · 3 holders which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - PA 422C BUTLER PA
2006-09-01 724-256 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BUTLER PA
2006-08-16 724-961 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 GREENSBURG PA
2006-07-26 724-970 0–9 XXXall 10 · 2 holders which blocks → IDT AMERICA, CORP. - PA 213C UNIONTOWN PA
2006-06-23 724-678 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WASHINGTON PA
2006-06-15 724-921 0XXX1XXX2XXX · 3 holders which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - PA 422C IMPERIAL PA
2006-04-12 724-759 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WEXFORD PA
2006-04-05 724-768 0–9 XXXall 10 · 7 holders which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - PA 422C CURTISVL PA
2006-03-23 724-252 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALIQUIPPA PA
2005-12-15 724-939 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J GIBSONIA PA
2005-12-01 724-590 0–9 XXXall 10 · 7 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 PTGSBNZN23 PA
2005-10-18 724-920 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALIQUIPPA PA
2005-10-05 724-905 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 CLYMER PA
2005-10-05 724-915 0–9 XXXall 10 · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HOMER CITY PA
2005-07-21 724-803 0–9 XXXall 10 · 4 holders which blocks → XO COMMUNICATIONS SERVICES, INC. - PA 7341 AVELLA PA
2005-07-09 724-833 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WAYNESBURG PA
2005-05-12 724-540 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FREEPORT PA
2005-05-12 724-687 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MARS PA
2005-05-12 724-901 0–9 XXXall 10 · 9 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 NEWWLMNGTN PA
2005-05-12 724-903 0XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 COOPERSTWN PA
2005-04-01 724-849 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - PA 422C MAMMOTH PA
2004-11-22 724-261 0–9 XXXall 10 · 5 holders which blocks → CITIZENS TELECOM SOLUTIONS, LLC - PA 050A GREENSBURG PA
2004-06-30 724-406 0XXX1XXX2XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → FIDIUM ENTERPRISE SERVICES, LLC 383J SLIPPERYRK PA
2004-04-16 724-306 0XXX1XXX2XXX3XXX4XXX6XXX7XXX · 4 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 PROSPECT PA
2004-04-16 724-391 0XXX1XXX2XXX3XXX4XXX5XXX7XXX · 4 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 PLAINGROVE PA
2004-04-16 724-476 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 W SUNBURY PA
2004-04-16 724-481 0–9 XXXall 10 · 5 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 NIXON PA
2004-04-16 724-585 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 PORTERSVL PA
2004-04-16 724-606 0–9 XXXall 10 · 3 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 NOWASHIGTN 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.