NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 412
VERIZON PENNSYLVANIA, INC. 249
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 86
NEW CINGULAR WIRELESS PCS, LLC - IL 60
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 57
AERIAL COMMUNICATIONS, INC. 49
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
— 412-799 1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON3 PA
— 412-800 0XXX1XXX2XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - PA 547E PTGSBNZN10 PA
— 412-801 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON2 PA
— 412-802 1XXX2XXX5XXX9XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-803 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-804 1XXX8XXX9XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-805 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTTSBGZON1 PA
— 412-808 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTTSBGZON7 PA
— 412-809 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN14 PA
— 412-810 1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTGSBNZN22 PA
— 412-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 412-812 8XXX9XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTTSBGZON1 PA
— 412-816 3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN22 PA
— 412-817 none assigned yet which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREENSBURG PA
— 412-818 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-819 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON6 PA
— 412-820 1XXX3XXX5XXX7XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN20 PA
— 412-821 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON3 PA
— 412-822 0XXX1XXX2XXX3XXX4XXX6XXX9XXX · 6 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON3 PA
— 412-823 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN22 PA
— 412-824 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN22 PA
— 412-825 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN22 PA
— 412-826 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN20 PA
— 412-828 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN20 PA
— 412-829 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN22 PA
— 412-831 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN12 PA
— 412-832 0XXX2XXX3XXX7XXX8XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H PTGSBNZN21 PA
— 412-833 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN12 PA
— 412-835 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN12 PA
— 412-838 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FIDIUM ENTERPRISE SERVICES, LLC 8597 PTGSBNZN13 PA
— 412-839 0XXX1XXX8XXX9XXX · 4 holders which blocks → ADVANCED TELEPHONE SYS INC DBA HTC COMMUNICATIONS 2522 PTGSBNZN13 PA
— 412-840 not yet reported which blocks → PA
— 412-841 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-847 4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FIDIUM ENTERPRISE SERVICES, LLC 8597 PTGSBNZN17 PA
— 412-848 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-849 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-850 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → ADVANCED TELEPHONE SYS INC DBA HTC COMMUNICATIONS 2522 PTGSBNZN19 PA
— 412-851 3XXX6XXX7XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN12 PA
— 412-854 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN12 PA
— 412-855 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-856 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN22 PA
— 412-858 8XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN22 PA
— 412-859 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN15 PA
— 412-860 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-861 0XXX2XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTGSBNZN13 PA
— 412-862 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-865 5XXX6XXX7XXX8XXX9XXX which blocks → FIDIUM ENTERPRISE SERVICES, LLC 8597 PTGSBNZN15 PA
— 412-867 0XXX1XXX5XXX6XXX7XXX8XXX9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-871 1XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTTSBGZON4 PA
— 412-872 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTGSBNZN10 PA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.