NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
— 703-787 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 HERNDON VA
— 703-788 not yet reported which blocks → PAETEC ITEL, LLC 829J WSNGTNZN19 VA
— 703-789 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → COMCAST IP PHONE, LLC 318J MANASSAS VA
— 703-790 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN17 VA
— 703-791 1XXX9XXX · 2 holders which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 INDENDNTHL VA
— 703-792 not yet reported which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 MANASSAS VA
— 703-793 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 HERNDON VA
— 703-794 2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 INDENDNTHL VA
— 703-795 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN08 VA
— 703-796 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 HERNDON VA
— 703-798 none assigned yet which blocks → METROPCS, INC. 5562 WSNGTNZN17 VA
— 703-799 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-800 not yet reported which blocks → VA
— 703-801 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN08 VA
— 703-802 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN19 VA
— 703-803 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN19 VA
— 703-805 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-806 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-807 6XXX7XXX8XXX · 2 holders which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-808 not yet reported which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WSNGTNZN19 VA
— 703-809 not yet reported which blocks → VA
— 703-810 0XXX3XXX7XXX9XXX · 2 holders which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN19 VA
— 703-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX VA
— 703-812 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-813 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN17 VA
— 703-814 0XXX1XXX2XXX3XXX5XXX6XXX · 2 holders which blocks → VERIZON VIRGINIA, INC. 9213 HERNDON VA
— 703-815 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 BRADDOCK VA
— 703-816 1XXX2XXX6XXX7XXX · 2 holders which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-817 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → VERIZON VIRGINIA, INC. 9213 HERNDON VA
— 703-818 4XXX which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN19 VA
— 703-819 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN08 VA
— 703-820 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-821 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN17 VA
— 703-822 1XXX3XXX4XXX5XXX7XXX · 2 holders which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-823 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-824 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-825 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 BRADDOCK VA
— 703-826 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON VIRGINIA, INC. 9213 HERNDON VA
— 703-827 1XXX3XXX · 2 holders which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN17 VA
— 703-828 0XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BRADDOCK VA
— 703-829 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → STARPOWER COMMUNICATIONS, LLC - VA 8830 BRADDOCK VA
— 703-830 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 BRADDOCK VA
— 703-831 1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 BRADDOCK VA
— 703-832 1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 BRADDOCK VA
— 703-833 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN19 VA
— 703-834 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN19 VA
— 703-835 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → STARPOWER COMMUNICATIONS, LLC - VA 8830 WSNGTNZN08 VA
— 703-836 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-837 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
— 703-838 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.