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
— 412-597 not yet reported which blocks → SPOK, INC. 6630 PTGSBNZN14 PA
— 412-599 9XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTGSBNZN19 PA
— 412-600 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-601 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 GREENSBURG PA
— 412-602 not yet reported which blocks → SPOK, INC. 6630 PTTSBGZON6 PA
— 412-603 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 BUTLER PA
— 412-604 0XXX3XXX7XXX9XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN15 PA
— 412-605 2XXX4XXX7XXX8XXX9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-606 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTTSBGZON1 PA
— 412-607 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTGSBNZN22 PA
— 412-608 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTTSBGZON1 PA
— 412-609 0XXX2XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTGSBNZN22 PA
— 412-610 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 GREENSBURG PA
— 412-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 412-612 2XXX3XXX4XXX5XXX7XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTGSBNZN22 PA
— 412-613 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-614 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 BUTLER PA
— 412-617 not yet reported which blocks → SPOK, INC. 6630 PTGSBNZN14 PA
— 412-620 3XXX8XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PTGSBNZN14 PA
— 412-621 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-622 4XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-623 9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-624 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-625 3XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PTGSBNZN15 PA
— 412-629 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 BUTLER PA
— 412-630 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN17 PA
— 412-631 0XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - PA 547E PTGSBNZN15 PA
— 412-632 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTTSBGZON3 PA
— 412-633 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-635 6XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN17 PA
— 412-636 1XXX2XXX3XXX4XXX6XXX7XXX8XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON4 PA
— 412-638 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-640 not yet reported which blocks → SPOK, INC. 6630 PTGSBNZN14 PA
— 412-641 0XXX9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-642 3XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-644 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-645 0XXX1XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-646 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → COMCAST IP PHONE, LLC 318J PTGSBNZN22 PA
— 412-647 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-648 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-649 not yet reported which blocks → SPOK, INC. 6630 PTGSBNZN14 PA
— 412-650 0XXX4XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN11 PA
— 412-653 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN11 PA
— 412-654 0XXX2XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTTSBGZON5 PA
— 412-655 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN11 PA
— 412-656 0XXX2XXX · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTTSBGZON5 PA
— 412-658 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-661 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON8 PA
— 412-663 0XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - PA 547E PTGSBNZN16 PA
— 412-664 5XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN10 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.