NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

338 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
8X8, INC. 38
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
— 254-822 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → SOUTHWESTERN BELL 9533 LEROY TX
— 254-823 1XXX2XXX3XXX4XXX8XXX · 4 holders which blocks → TEXAS WINDSTREAM, LLC 2153 PALUXY TX
— 254-824 0XXX2XXX3XXX4XXX5XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 WALNUT SPG TX
— 254-826 0XXX2XXX6XXX8XXX9XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 WEST TX
— 254-829 3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 GHOLSON TX
— 254-834 1XXX4XXX6XXX · 3 holders which blocks → TEXAS WINDSTREAM, LLC 2153 TOLAR TX
— 254-835 3XXX which blocks → TEXAS WINDSTREAM, LLC 2153 TOLAR TX
— 254-836 2XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 CHINA SPG TX
— 254-840 0XXX7XXX8XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 MCGREGOR TX
— 254-842 none assigned yet which blocks → TOTELCOM COMMUNICATIONS, LLC 2060 SIDNEY TX
— 254-845 0–9 XXXall 10 · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SO BOSQUE TX
— 254-848 0XXX3XXX6XXX7XXX8XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 SO BOSQUE TX
— 254-853 0XXX3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 MOODY TX
— 254-854 1XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → TEXAS WINDSTREAM, LLC 2153 COVINGTON TX
— 254-855 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WACO TX
— 254-857 0XXX2XXX5XXX6XXX7XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 LORENA TX
— 254-859 0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → SOUTHWESTERN BELL 9533 EDDY TX
— 254-863 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 AXTELL TX
— 254-865 not yet reported which blocks → BRIGHTSPEED OF EASTERN TEXAS, INC. 2084 GATESVILLE TX
— 254-867 not yet reported which blocks → SOUTHWESTERN BELL 9533 WACO TX
— 254-869 not yet reported which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 BURLINGTON TX
— 254-874 6XXX which blocks → TEXAS WINDSTREAM, LLC 2153 BLUM TX
— 254-875 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → SOUTHWESTERN BELL 9533 HALLSBURG TX
— 254-876 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 MART TX
— 254-879 none assigned yet which blocks → TOTELCOM COMMUNICATIONS, LLC 2060 PROCTOR TX
— 254-880 not yet reported which blocks → SOUTHWESTERN BELL 9533 XXXXXXXXXX TX
— 254-881 0XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → SOUTHWESTERN BELL 9533 ROSENTHAL TX
— 254-883 9XXX which blocks → SOUTHWESTERN BELL 9533 MARLIN TX
— 254-889 none assigned yet which blocks → TEXAS WINDSTREAM, LLC 2153 KOPPERL TX
— 254-893 not yet reported which blocks → TOTELCOM COMMUNICATIONS, LLC 2060 DE LEON TX
— 254-896 8XXX which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 RIESEL TX
— 254-897 not yet reported which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 GLEN ROSE TX
— 254-898 not yet reported which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 GLEN ROSE TX
— 254-899 0XXX5XXX8XXX9XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 TEMPLE TX
— 254-902 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 WEST TX
— 254-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 254-913 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TEMPLE TX
— 254-918 not yet reported which blocks → BRIGHTSPEED OF EASTERN TEXAS, INC. 2084 STEPHENVL TX
— 254-931 5XXX6XXX7XXX8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TEMPLE TX
— 254-932 not yet reported which blocks → TEXAS WINDSTREAM, LLC 2153 VALLEY ML TX
— 254-933 not yet reported which blocks → SOUTHWESTERN BELL 9533 BELTON TX
— 254-934 not yet reported which blocks → TEXAS WINDSTREAM, LLC 2153 VALLEY ML TX
— 254-938 0XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → SOUTHWESTERN BELL 9533 TROY TX
— 254-939 not yet reported which blocks → SOUTHWESTERN BELL 9533 BELTON TX
— 254-945 6XXX which blocks → TEXAS WINDSTREAM, LLC 2153 MOSHEIM TX
— 254-946 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MAY TX
— 254-947 not yet reported which blocks → BRIGHTSPEED OF TEXAS, INC. 2114 SALADO TX
— 254-950 not yet reported which blocks → TX
— 254-951 not yet reported which blocks → SOUTHWESTERN BELL 9533 XXXXXXXXXX TX
— 254-953 not yet reported which blocks → BRIGHTSPEED OF TEXAS, INC. 2114 KILLEEN 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.