NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 479-476 not yet reported which blocks → ARKWEST COMMUNICATIONS, INC. 1734 HAVANA AR
— 479-478 not yet reported which blocks → SOUTHWESTERN BELL 9533 FORT SMITH AR
— 479-479 not yet reported which blocks → AR
— 479-481 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 BENTONVL AR
— 479-484 not yet reported which blocks → SOUTHWESTERN BELL 9533 FORT SMITH AR
— 479-488 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J PEA RIDGE AR
— 479-489 not yet reported which blocks → ARKWEST COMMUNICATIONS, INC. 1734 OLA AR
— 479-493 not yet reported which blocks → ARKWEST COMMUNICATIONS, INC. 1734 BELLEVILLE AR
— 479-494 not yet reported which blocks → SOUTHWESTERN BELL 9533 FORT SMITH AR
— 479-495 none assigned yet which blocks → ARKWEST COMMUNICATIONS, INC. 1734 DANVILLE AR
— 479-497 6XXX which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 HARTMAN AR
— 479-498 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 RUSSELLVL AR
— 479-500 0XXX1XXX2XXX6XXX9XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J LINCOLN AR
— 479-501 not yet reported which blocks → AR
— 479-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AR
— 479-518 7XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 RUSSELLVL AR
— 479-521 not yet reported which blocks → SOUTHWESTERN BELL 9533 FAYETTEVL AR
— 479-524 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1143 SILOAM SPG AR
— 479-525 0XXX1XXX2XXX4XXX5XXX8XXX · 5 holders which blocks → COMCAST IP PHONE, LLC 318J GENTRY AR
— 479-527 0XXX which blocks → SOUTHWESTERN BELL 9533 FAYETTEVL AR
— 479-530 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FAYETTEVL AR
— 479-531 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROGERS AR
— 479-549 none assigned yet which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1143 SILOAM SPG AR
— 479-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT AR
— 479-559 not yet reported which blocks → MADISON COUNTY TEL. CO., INC. 1709 FORUM AR
— 479-567 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 RUSSELLVL AR
— 479-571 0XXX which blocks → SOUTHWESTERN BELL 9533 FAYETTEVL AR
— 479-575 not yet reported which blocks → SOUTHWESTERN BELL 9533 FAYETTEVL AR
— 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

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.