NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
— 830-893 not yet reported which blocks → MATRIX TELECOM, LLC. S/I/I TNCI - TX 7715 NEWBRANFLS TX
— 830-895 not yet reported which blocks → WINDSTREAM COMMUNICATIONS KERRVILLE, L.P. 2097 KERRVILLE TX
— 830-896 not yet reported which blocks → WINDSTREAM COMMUNICATIONS KERRVILLE, L.P. 2097 KERRVILLE TX
— 830-899 not yet reported which blocks → GUADALUPE VALLEY TEL. COOP., INC. 2083 CRANESMILL TX
— 830-900 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 UVALDE TX
— 830-904 5XXX8XXX9XXX · 2 holders which blocks → GUADALUPE VALLEY TEL. COOP., INC. 2083 SMITHSOVLY TX
— 830-905 5XXX which blocks → GUADALUPE VALLEY TEL. COOP., INC. 2083 CRANESMILL TX
— 830-906 9XXX which blocks → GUADALUPE VALLEY TEL. COOP., INC. 2083 HANCOCK TX
— 830-907 6XXX9XXX · 2 holders which blocks → GUADALUPE VALLEY TEL. COOP., INC. 2083 SATTLER TX
— 830-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 830-914 0XXX5XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 MARION TX
— 830-929 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 BOERNE TX
— 830-931 1XXX6XXX7XXX8XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 CASTROVL TX
— 830-934 not yet reported which blocks → ALENCO COMMUNICATIONS, INC. 2090 KNIPPA TX
— 830-935 5XXX8XXX · 2 holders which blocks → GUADALUPE VALLEY TEL. COOP., INC. 2083 HANCOCK TX
— 830-947 1XXX2XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 2154 SUTHELDSPG TX
— 830-950 not yet reported which blocks → TX
— 830-953 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANITSHLS TX
— 830-958 not yet reported which blocks → TX
— 830-959 not yet reported which blocks → TX
— 830-964 1XXX8XXX · 2 holders which blocks → GUADALUPE VALLEY TEL. COOP., INC. 2083 SATTLER TX
— 830-965 0XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 DILLEY TX
— 830-966 not yet reported which blocks → SOUTHWEST TEXAS TEL. CO. 2135 UTOPIA TX
— 830-968 not yet reported which blocks → STPCS JOINT VENTURE, LLC 4290 EAGLE PASS TX
— 830-976 not yet reported which blocks → TX
— 830-980 not yet reported which blocks → GUADALUPE VALLEY TEL. COOP., INC. 2083 BULVERDE TX
— 830-981 not yet reported which blocks → GUADALUPE VALLEY TEL. COOP., INC. 2083 BALCONES TX
— 830-984 0XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → ONVOY, LLC - TX 903C JOHNSON CY TX
— 830-985 5XXX6XXX7XXX8XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 LACOSTE TX
— 830-988 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → SOUTHWESTERN BELL 9533 SABINAL TX
— 830-990 not yet reported which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 FREDECKSBG TX
— 830-992 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 FREDECKSBG TX
— 830-995 none assigned yet which blocks → HILL COUNTRY TEL. COOP., INC. 2086 COMFORT TX
— 830-996 7XXX8XXX9XXX · 3 holders which blocks → BRIGHTSPEED OF TEXAS, INC. 2114 STOCKDALE TX
— 830-997 not yet reported which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 FREDECKSBG TX
— 830-998 3XXX6XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FREDECKSBG TX
— 830-999 0XXX2XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 CATARINA TX
— 831-204 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C MONTEREY CA
— 831-206 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SALINAS CA
— 831-209 not yet reported which blocks → CA
— 831-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 831-212 2XXX3XXX which blocks → METROPCS, INC. 5562 SANTA CRUZ CA
— 831-213 not yet reported which blocks → CA
— 831-214 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SALINAS CA
— 831-216 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 FELTON CA
— 831-217 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 BOULDERCRK CA
— 831-218 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 BEN LOMOND CA
— 831-219 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 APTOS CA
— 831-221 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → IP HORIZON LLC 515J SAN ARDO CA
— 831-222 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J FELTON CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.