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 979
SOUTHWESTERN BELL 59
FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 54
NEW CINGULAR WIRELESS PCS, LLC - IL 47
LEVEL 3 COMMUNICATIONS, LLC - TX 30
AERIAL COMMUNICATIONS, INC. 29
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
— 979-320 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - TX 903C EL CAMPO TX
— 979-323 3XXX6XXX8XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 BAY CITY TX
— 979-324 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRYAN TX
— 979-330 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 BAY CITY TX
— 979-332 4XXX5XXX6XXX7XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL CAMPO TX
— 979-335 0XXX1XXX3XXX5XXX8XXX9XXX · 6 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 E BERNARD TX
— 979-337 1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 6 holders which blocks → SOUTHWESTERN BELL 9533 BRENHAM TX
— 979-339 0XXX5XXX8XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 GARWOOD TX
— 979-341 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F CLTLKJCKSN TX
— 979-343 not yet reported which blocks → SOUTHWESTERN BELL 9533 XXXXXXXXXX TX
— 979-345 8XXX9XXX · 2 holders which blocks → BRIGHTSPEED OF TEXAS, INC. 2114 W COLUMBIA TX
— 979-357 not yet reported which blocks → INDUSTRY TEL. CO. 2093 INDUSTRY TX
— 979-358 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 WHARTON TX
— 979-361 not yet reported which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 BRYAN TX
— 979-364 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 CALVERT TX
— 979-366 0XXX1XXX3XXX4XXX6XXX7XXX8XXX which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 NORTHRUP TX
— 979-373 7XXX which blocks → SOUTHWESTERN BELL 9533 FREEPORT TX
— 979-378 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 FAYETTEVL TX
— 979-387 7XXX which blocks → CONSOLIDATED COMMUNICATIONS OF TEXAS COMPANY 2072 BEASLEY TX
— 979-388 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 CLTLKJCKSN TX
— 979-393 0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 BRYAN TX
— 979-406 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CALDWELL TX
— 979-409 not yet reported which blocks → TX
— 979-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 979-412 8XXX9XXX which blocks → METROPCS, INC. 5562 BRYAN TX
— 979-413 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BELLVILLE TX
— 979-415 3XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 FREEPORT TX
— 979-417 0XXX2XXX · 2 holders which blocks → METROPCS, INC. 5562 CLTLKJCKSN TX
— 979-418 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → METROPCS, INC. 5562 CLTLKJCKSN TX
— 979-421 4XXX7XXX8XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 BRENHAM TX
— 979-424 not yet reported which blocks → SPOK, INC. 6630 CLTLKJCKSN TX
— 979-426 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - TX 903C MATAGORDA TX
— 979-428 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 BLNGNWGULF TX
— 979-430 not yet reported which blocks → TX
— 979-431 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BRYAN TX
— 979-432 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 GLEN FLORA TX
— 979-446 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BRYAN TX
— 979-450 6XXX7XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRYAN TX
— 979-451 4XXX6XXX7XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRENHAM TX
— 979-452 1XXX2XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 BEASLEY TX
— 979-453 2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WHARTON TX
— 979-457 1XXX2XXX4XXX5XXX6XXX7XXX · 6 holders which blocks → GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 DAMON TX
— 979-458 not yet reported which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 BRYAN TX
— 979-459 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BRIGHTSPEED OF TEXAS, INC. 2114 W COLUMBIA TX
— 979-464 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 E BERNARD TX
— 979-469 1XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 W COLUMBIA TX
— 979-471 not yet reported which blocks → BCM ONE CLOUD COMMUNICATIONS, LLC 683G EAGLE LAKE TX
— 979-472 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SEALY TX
— 979-473 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 WALLIS TX
— 979-474 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 SWEENY 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.