NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

7 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 479
NEW CINGULAR WIRELESS PCS, LLC - IL 3
ONVOY, LLC - AR 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 2
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
— 479-576 3XXX5XXX6XXX7XXX · 3 holders which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 CENTERVL AR
— 479-577 0XXX which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 BOLES AR
— 479-582 4XXX which blocks → SOUTHWESTERN BELL 9533 FAYETTEVL AR
— 479-587 not yet reported which blocks → SOUTHWESTERN BELL 9533 FAYETTEVL AR
— 479-595 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FAYETTEVL AR
— 479-597 1XXX2XXX3XXX4XXX5XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREENWOOD AR
— 479-601 0XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 FAYETTEVL AR
— 479-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AR
— 479-616 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 ROGERS AR
— 479-619 none assigned yet which blocks → SOUTHWESTERN BELL 9533 ROGERS AR
— 479-621 none assigned yet which blocks → SOUTHWESTERN BELL 9533 ROGERS AR
— 479-622 none assigned yet which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DANVILLE AR
— 479-629 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 FORT SMITH AR
— 479-631 not yet reported which blocks → SOUTHWESTERN BELL 9533 ROGERS AR
— 479-632 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 ALMA AR
— 479-633 0XXX7XXX8XXX9XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 ROGERS AR
— 479-634 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 WINSLOW AR
— 479-635 6XXX which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 RATCLIFF AR
— 479-636 not yet reported which blocks → SOUTHWESTERN BELL 9533 ROGERS AR
— 479-637 none assigned yet which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 WALDRON AR
— 479-638 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 HACKETT AR
— 479-639 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 MIDLAND AR
— 479-640 9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 ROGERS AR
— 479-641 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 ATKINS AR
— 479-643 not yet reported which blocks → WINDSTREAM ARKANSAS, INC. 1691 ELKINS AR
— 479-644 3XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 ROGERS AR
— 479-646 not yet reported which blocks → SOUTHWESTERN BELL 9533 FORT SMITH AR
— 479-647 1XXX2XXX3XXX4XXX5XXX7XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLARKSVL AR
— 479-648 not yet reported which blocks → SOUTHWESTERN BELL 9533 FORT SMITH AR
— 479-649 6XXX7XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 FORT SMITH AR
— 479-650 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FORT SMITH AR
— 479-651 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 FORT SMITH AR
— 479-656 0XXX which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 GATEWAY AR
— 479-657 0XXX1XXX2XXX3XXX5XXX6XXX8XXX · 3 holders which blocks → AT&T - LOCAL 7421 BENTONVL AR
— 479-659 1XXX2XXX4XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 ROGERS AR
— 479-662 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J MOUNTAINBG AR
— 479-665 not yet reported which blocks → MADISON COUNTY TEL. CO., INC. 1709 KINGSTON AR
— 479-667 6XXX which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 OZARK AR
— 479-668 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FORT SMITH AR
— 479-674 not yet reported which blocks → LAVACA TEL CO 1704 LAVACA AR
— 479-675 none assigned yet which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 BOONEVILLE AR
— 479-677 none assigned yet which blocks → WINDSTREAM ARKANSAS, INC. 1691 ST PAUL AR
— 479-684 1XXX6XXX7XXX8XXX9XXX which blocks → SOUTHWESTERN BELL 9533 FAYETTEVL AR
— 479-685 2XXX which blocks → T-MOBILE USA, INC. 6529 BENTONVL AR
— 479-692 0XXX1XXX3XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RUSSELLVL AR
— 479-695 not yet reported which blocks → WINDSTREAM COMMUNICATIONS, INC. - AR 7656 FAYETTEVL AR
— 479-696 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 BENTONVL AR
— 479-700 not yet reported which blocks → AR
— 479-705 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 CLARKSVL AR
— 479-709 2XXX3XXX which blocks → SOUTHWESTERN BELL 9533 FORT SMITH AR

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.