NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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 703
VERIZON VIRGINIA, INC. 374
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 56
VERIZON SOUTH, INC. - VA (CONTEL) 53
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 53
LEVEL 3 COMMUNICATIONS, LLC - VA 48
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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 703-671 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-672 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 LORTON VA
— 703-673 6XXX8XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 HERNDON VA
— 703-674 4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J HERNDON VA
— 703-675 none assigned yet which blocks → METROPCS, INC. 5562 WSNGTNZN17 VA
— 703-676 3XXX9XXX · 2 holders which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN17 VA
— 703-677 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → LEVEL 3 TELECOM OF VIRGINIA, LLC - VA 7769 WSNGTNZN17 VA
— 703-678 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 TELECOM OF VIRGINIA, LLC - VA 7769 WSNGTNZN08 VA
— 703-679 0XXX1XXX2XXX7XXX8XXX · 3 holders which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN19 VA
— 703-680 not yet reported which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 DALE CITY VA
— 703-681 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-682 8XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSNGTNZN08 VA
— 703-683 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-684 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-685 9XXX which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-686 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J MANASSAS VA
— 703-687 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 LEESBURG VA
— 703-688 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J LORTON VA
— 703-689 1XXX which blocks → VERIZON VIRGINIA, INC. 9213 HERNDON VA
— 703-690 not yet reported which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 LORTON VA
— 703-691 5XXX6XXX · 2 holders which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN19 VA
— 703-692 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-693 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-694 not yet reported which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEESBURG VA
— 703-695 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-696 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-697 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-698 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN17 VA
— 703-700 not yet reported which blocks → VA
— 703-701 not yet reported which blocks → SPOK, INC. 6630 WSNGTNZN08 VA
— 703-702 not yet reported which blocks → SPOK, INC. 6630 WSNGTNZN08 VA
— 703-704 8XXX which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-705 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-706 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-707 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 HERNDON VA
— 703-708 4XXX which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN19 VA
— 703-709 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN19 VA
— 703-710 not yet reported which blocks → VA
— 703-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX VA
— 703-712 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSNGTNZN17 VA
— 703-713 2XXX5XXX7XXX8XXX · 3 holders which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN19 VA
— 703-714 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN17 VA
— 703-715 7XXX which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN19 VA
— 703-716 3XXX which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN19 VA
— 703-717 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-718 1XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-719 1XXX2XXX3XXX4XXX8XXX · 4 holders which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-720 0XXX4XXX5XXX9XXX · 3 holders which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN17 VA
— 703-721 3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-722 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 ARCOLA VA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.