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
— 412-874 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-875 8XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTTSBGZON7 PA
— 412-877 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-879 0XXX1XXX6XXX7XXX8XXX · 4 holders which blocks → PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E ELIZABETH PA
— 412-880 1XXX2XXX3XXX7XXX8XXX9XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-881 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON6 PA
— 412-882 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON6 PA
— 412-884 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON6 PA
— 412-885 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON6 PA
— 412-886 3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON6 PA
— 412-889 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-890 not yet reported which blocks → PA
— 412-892 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON6 PA
— 412-893 6XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTGSBNZN15 PA
— 412-894 1XXX2XXX3XXX4XXX5XXX6XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J PTTSBGZON1 PA
— 412-896 0XXX7XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTGSBNZN10 PA
— 412-897 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-901 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTTSBGZON5 PA
— 412-902 0XXX1XXX3XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PTGSBNZN22 PA
— 412-903 0XXX1XXX3XXX4XXX6XXX8XXX9XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTGSBNZN18 PA
— 412-904 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTTSBGZON1 PA
— 412-905 9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-906 4XXX7XXX8XXX9XXX · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTTSBGZON1 PA
— 412-908 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 BEAVER FLS PA
— 412-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 412-913 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-914 1XXX3XXX4XXX5XXX8XXX · 5 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN13 PA
— 412-915 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-916 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-917 not yet reported which blocks → SPOK, INC. 6630 PTTSBGZON7 PA
— 412-918 0XXX6XXX9XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTTSBGZON1 PA
— 412-919 6XXX7XXX9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON7 PA
— 412-920 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON7 PA
— 412-921 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON7 PA
— 412-922 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON7 PA
— 412-923 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON7 PA
— 412-924 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FIDIUM ENTERPRISE SERVICES, LLC 8597 PTTSBGZON8 PA
— 412-927 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PTGSBNZN10 PA
— 412-928 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON7 PA
— 412-929 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTTSBGZON7 PA
— 412-931 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON2 PA
— 412-932 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J PTTSBGZON1 PA
— 412-937 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON7 PA
— 412-939 1XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON2 PA
— 412-942 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → FIDIUM ENTERPRISE SERVICES, LLC 8597 PTTSBGZON6 PA
— 412-943 0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → FIDIUM ENTERPRISE SERVICES, LLC 8597 PTGSBNZN11 PA
— 412-945 0XXX1XXX3XXX7XXX8XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F CLAIRTON PA
— 412-946 0XXX2XXX3XXX5XXX6XXX8XXX · 2 holders which blocks → ONVOY, LLC - PA 547E ELIZABETH PA
— 412-948 4XXX5XXX6XXX7XXX · 3 holders which blocks → FIDIUM ENTERPRISE SERVICES, LLC 8597 PTGSBNZN10 PA
— 412-949 not yet reported which blocks → SPOK, INC. 6630 PTTSBGZON7 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.