NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 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, all time — NPA 870
SOUTHWESTERN BELL 154
NEW CINGULAR WIRELESS PCS, LLC - IL 105
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 85
WINDSTREAM ARKANSAS, INC. 72
LEVEL 3 COMMUNICATIONS, LLC - AR 47
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
— 870-887 not yet reported which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 PRESCOTT AR
— 870-890 1XXX2XXX · 2 holders which blocks → ARKANSAS RURAL INTERNET SERVICES, LLC 729J FORDYCE AR
— 870-892 not yet reported which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 POCAHONTAS AR
— 870-894 8XXX which blocks → WALNUT HILL TEL. CO. 1729 BRADLEY AR
— 870-895 8XXX which blocks → BRIGHTSPEED OF ARKANSAS, LLC 1706 SALEM AR
— 870-896 not yet reported which blocks → SOUTHWEST ARKANSAS TEL. COOP., INC. 1724 FULTON AR
— 870-897 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JONESBORO AR
— 870-898 0XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 ASHDOWN AR
— 870-899 0XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 BODCAW AR
— 870-901 0XXX1XXX3XXX4XXX6XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 MAGNOLIA AR
— 870-904 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 MAGNOLIA AR
— 870-906 0XXX1XXX2XXX · 3 holders which blocks → ONVOY, LLC - AR 348F STAR CITY AR
— 870-910 not yet reported which blocks → SOUTHWESTERN BELL 9533 JONESBORO AR
— 870-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AR
— 870-914 3XXX7XXX · 2 holders which blocks → TELNYX LLC 073H MAGNOLIA AR
— 870-917 none assigned yet which blocks → WINDSTREAM ARKANSAS, INC. 1691 SHERIDAN AR
— 870-918 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL DORADO AR
— 870-919 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 JONESBORO AR
— 870-921 8XXX which blocks → WALNUT HILL TEL. CO. 1729 LEWISVILLE AR
— 870-924 1XXX which blocks → BRIGHTSPEED OF SOUTH ARKANSAS, LLC 1727 JUNCTIONCY AR
— 870-926 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JONESBORO AR
— 870-929 2XXX9XXX · 2 holders which blocks → COMCAST IP PHONE, LLC 318J BERRYVILLE AR
— 870-930 not yet reported which blocks → SOUTHWESTERN BELL 9533 JONESBORO AR
— 870-931 not yet reported which blocks → SOUTHWESTERN BELL 9533 JONESBORO AR
— 870-932 not yet reported which blocks → SOUTHWESTERN BELL 9533 JONESBORO AR
— 870-933 not yet reported which blocks → SOUTHWESTERN BELL 9533 JONESBORO AR
— 870-934 not yet reported which blocks → SOUTHWESTERN BELL 9533 JONESBORO AR
— 870-935 not yet reported which blocks → SOUTHWESTERN BELL 9533 JONESBORO AR
— 870-937 2XXX6XXX · 2 holders which blocks → WINDSTREAM MISSOURI, INC. 1885 SO MYRTLE AR
— 870-941 0XXX8XXX9XXX which blocks → WINDSTREAM ARKANSAS, INC. 1691 SHERIDAN AR
— 870-942 not yet reported which blocks → WINDSTREAM ARKANSAS, INC. 1691 SHERIDAN AR
— 870-943 0XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 HUTTIG AR
— 870-945 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FORREST CY AR
— 870-946 none assigned yet which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 DE WITT AR
— 870-948 not yet reported which blocks → MOUNTAIN VIEW TELEPHONE COMPANY 1712 PRIM AR
— 870-949 2XXX3XXX4XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MAGNOLIA AR
— 870-950 not yet reported which blocks → AR
— 870-958 not yet reported which blocks → AR
— 870-959 not yet reported which blocks → AR
— 870-962 0XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 URBANA AR
— 870-966 5XXX6XXX · 2 holders which blocks → BRIGHTSPEED OF ARKANSAS, LLC 1706 OZARKACRES AR
— 870-972 not yet reported which blocks → SOUTHWESTERN BELL 9533 JONESBORO AR
— 870-974 9XXX which blocks → SOUTHWESTERN BELL 9533 JONESBORO AR
— 870-976 not yet reported which blocks → AR
— 870-983 not yet reported which blocks → SOUTHWEST ARKANSAS TEL. COOP., INC. 1724 WASHINGTON AR
— 870-990 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AR
— 870-992 4XXX5XXX6XXX · 3 holders which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 ALMYRA AR
— 870-994 not yet reported which blocks → BRIGHTSPEED OF ARKANSAS, LLC 1706 ASH FLAT AR
— 870-995 6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HELENA AR
— 870-998 3XXX4XXX8XXX · 3 holders which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 DEVALLSBLF 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.