NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

337 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 25
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 12
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
— 870-904 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
— 872-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 872-213 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC 224C CHICGOZN02 IL
— 872-271 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
— 872-275 0–9 XXXall 10 · 5 holders which blocks → COMMIO, LLC 939H CHICGOZN01 IL
— 872-280 0–9 XXXall 10 · 5 holders which blocks → COMMIO, LLC 939H CHICGOZN04 IL
— 872-298 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H CHICGOZN01 IL
— 872-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 872-401 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CHICGOZN07 IL
— 872-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 872-469 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC 224C CHICGOZN03 IL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.