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
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Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 412-581 not yet reported which blocks → SPOK, INC. 6630 PTTSBGZON1 PA
— 412-582 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 UNIONTOWN PA
— 412-585 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 CRIDERSCOR PA
— 412-586 4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PTTSBGZON1 PA
— 412-589 2XXX3XXX4XXX8XXX9XXX · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTTSBGZON1 PA
— 412-590 not yet reported which blocks → SPOK, INC. 6630 PTTSBGZON2 PA
— 412-591 not yet reported which blocks → SPOK, INC. 6630 PTTSBGZON2 PA
— 412-593 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PTTSBGZON6 PA
— 412-594 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON1 PA
— 412-595 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTGSBNZN12 PA
— 412-596 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 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

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.