NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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, last 30 days
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
Download CSV ↓
Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 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
— 412-396 0XXX9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-397 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTGSBNZN15 PA
— 412-398 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-399 0XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PTTSBGZON5 PA
— 412-400 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-401 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTTSBGZON5 PA
— 412-402 8XXX9XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-404 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTTSBGZON8 PA
— 412-405 1XXX2XXX3XXX4XXX6XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 ELIZABETH PA
— 412-406 2XXX3XXX5XXX6XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTGSBNZN19 PA
— 412-407 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTTSBGZON3 PA
— 412-408 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTTSBGZON3 PA
— 412-409 0XXX1XXX2XXX3XXX5XXX6XXX8XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTGSBNZN12 PA
— 412-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 412-412 not yet reported which blocks → PA
— 412-414 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTTSBGZON5 PA
— 412-415 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTTSBGZON2 PA
— 412-417 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-418 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-419 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-420 0XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-421 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-422 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-423 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FIDIUM ENTERPRISE SERVICES, LLC 8597 PTGSBNZN20 PA
— 412-424 1XXX3XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J PTGSBNZN15 PA
— 412-426 0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTGSBNZN20 PA
— 412-427 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-429 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN14 PA
— 412-431 9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-432 6XXX8XXX9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-433 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-434 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-435 1XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J PTGSBNZN20 PA
— 412-437 3XXX6XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PTTSBGZON6 PA
— 412-438 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PTTSBGZON7 PA
— 412-440 3XXX5XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J PTTSBGZON6 PA
— 412-441 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON8 PA
— 412-442 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-443 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.