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
— 412-272 not yet reported which blocks → SPOK, INC. 6630 PTGSBNZN14 PA
— 412-273 0XXX2XXX5XXX8XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON4 PA
— 412-276 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN14 PA
— 412-278 7XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN14 PA
— 412-279 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN14 PA
— 412-280 not yet reported which blocks → SPOK, INC. 6630 PTTSBGZON1 PA
— 412-281 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-282 0XXX3XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PTTSBGZON3 PA
— 412-283 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FIDIUM ENTERPRISE SERVICES, LLC 8597 PTGSBNZN12 PA
— 412-285 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-287 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTTSBGZON1 PA
— 412-288 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-289 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 INDIANA PA
— 412-291 0XXX8XXX9XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-292 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTGSBNZN13 PA
— 412-293 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - PA 547E PTGSBNZN14 PA
— 412-296 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 WASHINGTON PA
— 412-297 1XXX2XXX3XXX6XXX9XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTTSBGZON1 PA
— 412-298 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-299 5XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN15 PA
— 412-300 not yet reported which blocks → SPOK, INC. 6630 PTGSBNZN14 PA
— 412-302 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-303 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-306 8XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON6 PA
— 412-307 3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PTTSBGZON2 PA
— 412-308 0XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTGSBNZN12 PA
— 412-309 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 INDIANA PA
— 412-310 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 412-312 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTTSBGZON2 PA
— 412-313 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTTSBGZON2 PA
— 412-314 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - PA 547E PTGSBNZN10 PA
— 412-316 5XXX6XXX7XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTTSBGZON1 PA
— 412-317 3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTGSBNZN22 PA
— 412-318 5XXX7XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTGSBNZN17 PA
— 412-319 0XXX2XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTGSBNZN13 PA
— 412-320 0XXX1XXX3XXX5XXX6XXX9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-321 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-322 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-323 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-324 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FIDIUM ENTERPRISE SERVICES, LLC 8597 PTGSBNZN16 PA
— 412-325 not yet reported which blocks → FIDIUM ENTERPRISE SERVICES, LLC 8597 PTTSBGZON1 PA
— 412-326 3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PTTSBGZON5 PA
— 412-327 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-330 0XXX1XXX7XXX8XXX9XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-331 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON7 PA
— 412-333 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-334 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-335 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-336 3XXX6XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PTTSBGZON4 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.