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
— 412-729 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → FIDIUM ENTERPRISE SERVICES, LLC 8597 ELIZABETH PA
— 412-731 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON4 PA
— 412-732 1XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON2 PA
— 412-733 0XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTTSBGZON7 PA
— 412-734 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON2 PA
— 412-736 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-739 not yet reported which blocks → SPOK, INC. 6630 PTTSBGZON2 PA
— 412-740 0XXX1XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-741 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN16 PA
— 412-744 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTGSBNZN21 PA
— 412-745 not yet reported which blocks → FULL SERVICE NETWORK LP 7820 PTTSBGZON1 PA
— 412-747 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN14 PA
— 412-748 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PTGSBNZN17 PA
— 412-749 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN16 PA
— 412-751 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN10 PA
— 412-752 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PTTSBGZON1 PA
— 412-753 3XXX4XXX6XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J PTGSBNZN18 PA
— 412-754 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN10 PA
— 412-755 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - PA 547E PTGSBNZN18 PA
— 412-756 3XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PTGSBNZN19 PA
— 412-757 1XXX2XXX3XXX5XXX9XXX · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTTSBGZON6 PA
— 412-759 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-760 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-761 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON2 PA
— 412-762 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-765 5XXX6XXX7XXX9XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-766 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON2 PA
— 412-767 6XXX7XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN19 PA
— 412-768 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-770 0XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PTTSBGZON1 PA
— 412-771 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON7 PA
— 412-772 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTTSBGZON3 PA
— 412-774 0–9 XXXwhole prefix which blocks → ONVOY, LLC - PA 547E PTTSBGZON1 PA
— 412-776 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E PTGSBNZN15 PA
— 412-777 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON7 PA
— 412-778 7XXX8XXX9XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON7 PA
— 412-779 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-780 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-781 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON3 PA
— 412-782 9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON3 PA
— 412-784 6XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON3 PA
— 412-786 not yet reported which blocks → SPOK, INC. 6630 PTTSBGZON2 PA
— 412-787 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN14 PA
— 412-788 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN14 PA
— 412-789 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-791 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H PTTSBGZON1 PA
— 412-793 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN21 PA
— 412-794 0XXX2XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - PA 547E PTGSBNZN20 PA
— 412-795 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN21 PA
— 412-798 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN21 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.