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
— 412-337 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-338 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-340 not yet reported which blocks → SCHUYLKILL MOBILE FONE, INC. 6739 PTGSBNZN19 PA
— 412-341 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON6 PA
— 412-342 3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J PTTSBGZON4 PA
— 412-343 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON6 PA
— 412-344 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON6 PA
— 412-345 1XXX3XXX5XXX6XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PTTSBGZON8 PA
— 412-346 1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PTGSBNZN10 PA
— 412-347 1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J PTGSBNZN12 PA
— 412-348 7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J PTGSBNZN17 PA
— 412-349 3XXX5XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PTGSBNZN22 PA
— 412-350 8XXX9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-351 9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON4 PA
— 412-352 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-355 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-358 0XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN17 PA
— 412-359 0XXX9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-361 9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON8 PA
— 412-362 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON8 PA
— 412-363 9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON8 PA
— 412-364 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN17 PA
— 412-365 4XXX5XXX8XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON8 PA
— 412-366 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN17 PA
— 412-367 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN17 PA
— 412-369 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN17 PA
— 412-370 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-371 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON4 PA
— 412-372 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN22 PA
— 412-373 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN22 PA
— 412-374 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN22 PA
— 412-375 0XXX1XXX2XXX7XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTGSBNZN15 PA
— 412-376 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTGSBNZN22 PA
— 412-378 4XXX5XXX7XXX8XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTGSBNZN22 PA
— 412-380 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN22 PA
— 412-381 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-382 8XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 ELIZABETH PA
— 412-383 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-384 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 ELIZABETH PA
— 412-385 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTGSBNZN10 PA
— 412-386 0XXX1XXX2XXX3XXX7XXX8XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTGSBNZN11 PA
— 412-387 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ELIZABETH PA
— 412-388 2XXX4XXX8XXX9XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON6 PA
— 412-389 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-390 4XXX5XXX6XXX7XXX8XXX9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-391 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-392 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-393 9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-394 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-395 not yet reported which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTTSBGZON1 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.