NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

4 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, last 30 days — NPA 254
ONVOY, LLC - TX 4
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
— 254-562 not yet reported which blocks → SOUTHWESTERN BELL 9533 MEXIA TX
— 254-564 0XXX6XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WALNUT SPG TX
— 254-572 1XXX2XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 STRAWN TX
— 254-576 6XXX which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 HUBBARD TX
— 254-578 6XXX which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 DAWSON TX
— 254-580 none assigned yet which blocks → SOUTHWESTERN BELL 9533 HILLSBORO TX
— 254-582 not yet reported which blocks → SOUTHWESTERN BELL 9533 HILLSBORO TX
— 254-583 not yet reported which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 ROSEBUD TX
— 254-584 6XXX which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 LOTT TX
— 254-587 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 REAGAN TX
— 254-592 0XXX which blocks → T-MOBILE USA, INC. 6529 STEPHENVL TX
— 254-593 7XXX which blocks → BRIGHTSPEED OF TEXAS, INC. 2114 BUCKHOLTS TX
— 254-597 5XXX which blocks → BRIGHTSPEED OF TEXAS, INC. 2114 CRANFILSGP TX
— 254-598 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 TEMPLE TX
— 254-602 4XXX5XXX which blocks → SOUTHWESTERN BELL 9533 HILLSBORO TX
— 254-605 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → SOUTHWESTERN BELL 9533 CAMERON TX
— 254-609 not yet reported which blocks → SOUTHWESTERN BELL 9533 XXXXXXXXXX TX
— 254-610 not yet reported which blocks → SOUTHWESTERN BELL 9533 XXXXXXXXXX TX
— 254-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 254-613 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K BELTON TX
— 254-616 0XXX9XXX · 2 holders which blocks → BRIGHTSPEED OF TEXAS, INC. 2114 KILLEEN TX
— 254-618 not yet reported which blocks → BRIGHTSPEED OF TEXAS, INC. 2114 KILLEEN TX
— 254-622 not yet reported which blocks → BRIGHTSPEED OF TEXAS, INC. 2114 LAGUNA PK TX
— 254-623 0XXX which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 BYNUM TX
— 254-624 0XXX2XXX which blocks → T-MOBILE USA, INC. 6529 TEMPLE TX
— 254-625 4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MEXIA TX
— 254-628 not yet reported which blocks → BRIGHTSPEED OF TEXAS, INC. 2114 KILLEEN TX
— 254-629 0XXX5XXX7XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 EASTLAND TX
— 254-631 7XXX8XXX9XXX which blocks → SOUTHWESTERN BELL 9533 EASTLAND TX
— 254-632 3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TEXAS WINDSTREAM, LLC 2153 BRANDON TX
— 254-633 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → METROPCS, INC. 5562 WACO TX
— 254-634 not yet reported which blocks → BRIGHTSPEED OF TEXAS, INC. 2114 KILLEEN TX
— 254-635 6XXX which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 MORGAN TX
— 254-638 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CROSS PL TX
— 254-639 not yet reported which blocks → TOTELCOM COMMUNICATIONS, LLC 2060 CARBON TX
— 254-642 6XXX which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 ROGERS TX
— 254-643 not yet reported which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 RISINGSTAR TX
— 254-644 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 WACO TX
— 254-645 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - TX 903C GROESBECK TX
— 254-646 1XXX which blocks → LIPAN TEL. CO. 2105 LIPAN TX
— 254-647 0XXX2XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 RANGER TX
— 254-651 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WACO TX
— 254-653 8XXX which blocks → TOTELCOM COMMUNICATIONS, LLC 2060 OLDEN TX
— 254-657 none assigned yet which blocks → BRIGHTSPEED OF TEXAS, INC. 2114 HOLLAND TX
— 254-662 8XXX which blocks → SOUTHWESTERN BELL 9533 WACO TX
— 254-663 2XXX3XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - TX 903C CRAWFORD TX
— 254-666 not yet reported which blocks → SOUTHWESTERN BELL 9533 WACO TX
— 254-672 0XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 STRAWN TX
— 254-675 not yet reported which blocks → BRIGHTSPEED OF TEXAS, INC. 2114 CLIFTON TX
— 254-678 not yet reported which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 IRENE TX

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.