NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
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
— 540-817 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → METROPCS, INC. 5562 LEXINGTON VA
— 540-818 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 RADFORD VA
— 540-819 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ROANOKE VA
— 540-822 0XXX1XXX2XXX3XXX7XXX8XXX · 4 holders which blocks → VERIZON VIRGINIA, INC. 9213 CATOCTIN VA
— 540-825 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 CULPEPER VA
— 540-827 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON VIRGINIA, INC. 9213 CULPEPER VA
— 540-828 none assigned yet which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 BRIDGEWTR VA
— 540-829 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 CULPEPER VA
— 540-831 0XXX3XXX8XXX9XXX · 3 holders which blocks → VERIZON VIRGINIA, INC. 9213 RADFORD VA
— 540-832 4XXX6XXX8XXX · 3 holders which blocks → VERIZON VIRGINIA, INC. 9213 GORDONSVL VA
— 540-833 0XXX7XXX · 2 holders which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 EDOM VA
— 540-834 3XXX6XXX7XXX8XXX9XXX which blocks → VERIZON VIRGINIA, INC. 9213 FREDECKSBG VA
— 540-836 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WAYNESBORO VA
— 540-837 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → VERIZON VIRGINIA, INC. 9213 BOYCE VA
— 540-839 none assigned yet which blocks → VIRGINIA TEL. CO. 0253 HOTSPRINGS VA
— 540-840 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDECKSBG VA
— 540-841 5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDECKSBG VA
— 540-842 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDECKSBG VA
— 540-843 8XXX9XXX · 2 holders which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 LURAY VA
— 540-845 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDECKSBG VA
— 540-846 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDECKSBG VA
— 540-847 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDECKSBG VA
— 540-848 2XXX3XXX4XXX6XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDECKSBG VA
— 540-849 1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 STAUNTON VA
— 540-850 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDECKSBG VA
— 540-851 5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON VIRGINIA, INC. 9213 STAUNTON VA
— 540-852 not yet reported which blocks → SHENANDOAH TEL. CO. 0250 BERGTON VA
— 540-853 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 ROANOKE VA
— 540-854 1XXX3XXX · 2 holders which blocks → VERIZON VIRGINIA, INC. 9213 UNIONVILLE VA
— 540-855 0XXX1XXX4XXX7XXX8XXX which blocks → VERIZON VIRGINIA, INC. 9213 ROANOKE VA
— 540-856 not yet reported which blocks → SHENANDOAH TEL. CO. 0250 BASYE VA
— 540-857 8XXX which blocks → VERIZON VIRGINIA, INC. 9213 ROANOKE VA
— 540-858 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → VERIZON VIRGINIA, INC. 9213 GORE VA
— 540-862 not yet reported which blocks → LUMOS TELEPHONE LLC 0226 CLIFTNFORG VA
— 540-863 0XXX4XXX5XXX8XXX · 3 holders which blocks → LUMOS TELEPHONE LLC 0226 CLIFTNFORG VA
— 540-864 none assigned yet which blocks → NEW CASTLE TEL. CO. 3029 NEW CASTLE VA
— 540-866 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 STEPHENSCY VA
— 540-867 1XXX2XXX3XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 HINTON VA
— 540-868 3XXX5XXX6XXX8XXX · 4 holders which blocks → VERIZON VIRGINIA, INC. 9213 STEPHENSCY VA
— 540-869 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 STEPHENSCY VA
— 540-871 2XXX which blocks → UNITED STATES CELLULAR - VA 6283 BEDFORD VA
— 540-872 1XXX6XXX7XXX8XXX · 2 holders which blocks → VERIZON VIRGINIA, INC. 9213 MINERAL VA
— 540-874 1XXX2XXX3XXX8XXX9XXX · 3 holders which blocks → UNITED STATES CELLULAR - VA 6283 BEDFORD VA
— 540-875 0XXX1XXX2XXX3XXX4XXX5XXX · 5 holders which blocks → UNITED STATES CELLULAR - VA 6283 BEDFORD VA
— 540-877 0XXX4XXX5XXX6XXX7XXX8XXX which blocks → VERIZON VIRGINIA, INC. 9213 WINCHESTER VA
— 540-878 0XXX2XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → METROPCS, INC. 5562 WARRENTON VA
— 540-879 0XXX1XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 DAYTON VA
— 540-882 0XXX1XXX2XXX6XXX7XXX8XXX · 4 holders which blocks → VERIZON VIRGINIA, INC. 9213 CATOCTIN VA
— 540-884 8XXX9XXX · 2 holders which blocks → LUMOS TELEPHONE OF BOTETOURT LLC 0249 EAGLE ROCK VA
— 540-885 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 STAUNTON VA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.