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 540
VERIZON VIRGINIA, INC. 156
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 79
NEW CINGULAR WIRELESS PCS, LLC - DC 66
OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 64
LEVEL 3 COMMUNICATIONS, LLC - VA 50
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
— 540-744 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G RADFORD VA
— 540-745 not yet reported which blocks → CITIZENS TEL. COOP. 0225 FLOYD VA
— 540-747 7XXX8XXX which blocks → LUMOS TELEPHONE LLC 0226 POTTSCREEK VA
— 540-748 5XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LOUISA VA
— 540-749 0–9 XXXall 10 · 7 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 FRONTROYAL VA
— 540-751 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → VERIZON VIRGINIA, INC. 9213 MT GILEAD VA
— 540-752 3XXX which blocks → VERIZON VIRGINIA, INC. 9213 HARTWOOD VA
— 540-758 0XXX2XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 EDINBURG VA
— 540-760 0XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDECKSBG VA
— 540-763 not yet reported which blocks → CITIZENS TEL. COOP. 0225 ALUM RIDGE VA
— 540-767 9XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 ROANOKE VA
— 540-769 1XXX3XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON VIRGINIA, INC. 9213 ROANOKE VA
— 540-772 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 ROANOKE VA
— 540-774 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 ROANOKE VA
— 540-775 not yet reported which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 KINGGEORGE VA
— 540-776 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 ROANOKE VA
— 540-777 not yet reported which blocks → COMCAST IP PHONE, LLC 318J ROANOKE VA
— 540-778 7XXX9XXX · 2 holders which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 STANLEY VA
— 540-785 not yet reported which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 CHANCELLOR VA
— 540-786 not yet reported which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 CHANCELLOR VA
— 540-788 0XXX2XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → VERIZON VIRGINIA, INC. 9213 CALVERTON VA
— 540-789 not yet reported which blocks → CITIZENS TEL. COOP. 0225 WILLIS VA
— 540-793 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ROANOKE VA
— 540-797 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 ROANOKE VA
— 540-798 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 ROANOKE VA
— 540-801 none assigned yet which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 HARRISONBG VA
— 540-805 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 SPOTSYLVAN VA
— 540-808 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 BLACKSBURG VA
— 540-809 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 FREDECKSBG VA
— 540-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX VA
— 540-816 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BEDFORD VA
— 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

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.