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
— 479-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AR
— 479-713 0XXX9XXX which blocks → SOUTHWESTERN BELL 9533 FAYETTEVL AR
— 479-715 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AR 5179 BENTONVL AR
— 479-717 0XXX2XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 SPRINGDALE AR
— 479-718 6XXX which blocks → SOUTHWESTERN BELL 9533 FAYETTEVL AR
— 479-719 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FORT SMITH AR
— 479-725 not yet reported which blocks → WINDSTREAM COMMUNICATIONS, INC. - AR 7656 SPRINGDALE AR
— 479-733 3XXX7XXX8XXX9XXX · 3 holders which blocks → CSC VOICE, LLC 612K LAMAR AR
— 479-736 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 GENTRY AR
— 479-737 not yet reported which blocks → MADISON COUNTY TEL. CO., INC. 1709 HUNTSVILLE AR
— 479-738 not yet reported which blocks → MADISON COUNTY TEL. CO., INC. 1709 HUNTSVILLE AR
— 479-739 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FORT SMITH AR
— 479-750 not yet reported which blocks → SOUTHWESTERN BELL 9533 SPRINGDALE AR
— 479-751 not yet reported which blocks → SOUTHWESTERN BELL 9533 SPRINGDALE AR
— 479-752 not yet reported which blocks → DECATUR TEL. CO. 1699 DECATUR AR
— 479-754 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 CLARKSVL AR
— 479-755 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 FORT SMITH AR
— 479-756 not yet reported which blocks → SOUTHWESTERN BELL 9533 SPRINGDALE AR
— 479-757 0XXX9XXX which blocks → SOUTHWESTERN BELL 9533 SPRINGDALE AR
— 479-761 not yet reported which blocks → PRAIRIE GROVE TELEPHONE COMPANY 1718 STRICKLER AR
— 479-765 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → COMCAST IP PHONE, LLC 318J WINSLOW AR
— 479-769 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 FORT SMITH AR
— 479-770 3XXX4XXX5XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 SPRINGDALE AR
— 479-774 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 CLARKSVL AR
— 479-782 not yet reported which blocks → SOUTHWESTERN BELL 9533 FORT SMITH AR
— 479-783 not yet reported which blocks → SOUTHWESTERN BELL 9533 FORT SMITH AR
— 479-784 not yet reported which blocks → SOUTHWESTERN BELL 9533 FORT SMITH AR
— 479-785 not yet reported which blocks → SOUTHWESTERN BELL 9533 FORT SMITH AR
— 479-787 3XXX8XXX which blocks → SOUTHWESTERN BELL 9533 GRAVETTE AR
— 479-788 not yet reported which blocks → SOUTHWESTERN BELL 9533 FORT SMITH AR
— 479-789 0XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 HINDSVILLE AR
— 479-790 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FAYETTEVL AR
— 479-795 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 CENTERTON AR
— 479-806 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 FORT SMITH AR
— 479-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AR
— 479-820 not yet reported which blocks → SOUTHWESTERN BELL 9533 SPRINGDALE AR
— 479-822 not yet reported which blocks → OZARK TELEPHONE COMPANY 1866 SOWESTCITY AR
— 479-824 not yet reported which blocks → PRAIRIE GROVE TELEPHONE COMPANY 1718 LINCOLN AR
— 479-839 not yet reported which blocks → WINDSTREAM ARKANSAS, INC. 1691 WEST FORK AR
— 479-841 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 FAYETTEVL AR
— 479-845 not yet reported which blocks → WINDSTREAM COMMUNICATIONS, INC. - AR 7656 BENTONVL AR
— 479-846 not yet reported which blocks → PRAIRIE GROVE TELEPHONE COMPANY 1718 PRAIRIEGRV AR
— 479-848 not yet reported which blocks → PRAIRIE GROVE TELEPHONE COMPANY 1718 MORROW AR
— 479-855 not yet reported which blocks → SOUTHWESTERN BELL 9533 BENTONVL AR
— 479-856 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 FAYETTEVL AR
— 479-857 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RUSSELLVL AR
— 479-858 none assigned yet which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 RUSSELLVL AR
— 479-866 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTONVL AR
— 479-870 not yet reported which blocks → AR
— 479-871 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FAYETTEVL 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.