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
— 540-201 not yet reported which blocks → SPOK, INC. 6630 ROANOKE VA
— 540-206 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → VERIZON VIRGINIA, INC. 9213 ROANOKE VA
— 540-208 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F HARRISONBG VA
— 540-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX VA
— 540-212 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CULPEPER VA
— 540-213 not yet reported which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F STAUNTON VA
— 540-216 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WARRENTON VA
— 540-219 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CULPEPER VA
— 540-220 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 FREDECKSBG VA
— 540-222 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CULPEPER VA
— 540-224 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 ROANOKE VA
— 540-226 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 FREDECKSBG VA
— 540-229 none assigned yet which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CULPEPER VA
— 540-230 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 RADFORD VA
— 540-231 not yet reported which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 BLACKSBURG VA
— 540-232 9XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 BLACKSBURG VA
— 540-234 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 WEYERSCAVE VA
— 540-239 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 RADFORD VA
— 540-241 none assigned yet which blocks → METROPCS, INC. 5562 WAYNESBORO VA
— 540-242 1XXX2XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 STAFFORD VA
— 540-243 3XXX5XXX7XXX8XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ROCKYMOUNT VA
— 540-245 0XXX1XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON VIRGINIA, INC. 9213 STAUNTON VA
— 540-246 0XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARRISONBG VA
— 540-247 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WINCHESTER VA
— 540-248 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 STAUNTON VA
— 540-249 0XXX1XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 GROTTOES VA
— 540-250 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 RADFORD VA
— 540-253 0XXX1XXX2XXX3XXX4XXX6XXX8XXX · 5 holders which blocks → VERIZON VIRGINIA, INC. 9213 THE PLAINS VA
— 540-254 0XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON VIRGINIA, INC. 9213 BUCHANAN VA
— 540-255 0XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 STAUNTON VA
— 540-256 0XXX4XXX5XXX6XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WAYNESBORO VA
— 540-258 3XXX4XXX6XXX · 2 holders which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 GLASGOW VA
— 540-260 1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 CHRISTISBG VA
— 540-261 not yet reported which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 BUENAVISTA VA
— 540-262 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 CULPEPER VA
— 540-264 3XXX4XXX8XXX9XXX · 2 holders which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 BUENAVISTA VA
— 540-265 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 ROANOKE VA
— 540-266 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → AT&T - LOCAL 7421 ROANOKE VA
— 540-267 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 RADFORD VA
— 540-268 0XXX3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → VERIZON VIRGINIA, INC. 9213 SHAWSVILLE VA
— 540-269 0XXX1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 KEEZLETOWN VA
— 540-270 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WARRENTON VA
— 540-272 3XXX7XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WARRENTON VA
— 540-273 9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 FREDECKSBG VA
— 540-275 0XXX8XXX · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J MOUNTSOLON VA
— 540-279 not yet reported which blocks → MGW TELEPHONE COMPANY, INC. 0238 MOUNTANGRV VA
— 540-280 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 STAUNTON VA
— 540-283 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 ROANOKE VA
— 540-286 9XXX which blocks → VERIZON VIRGINIA, INC. 9213 HARTWOOD VA
— 540-287 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 FREDECKSBG 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.