NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
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
— 870-697 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → SOUTHWESTERN BELL 9533 HICKORYRDG AR
— 870-698 8XXX which blocks → SOUTHWESTERN BELL 9533 BATESVILLE AR
— 870-699 7XXX8XXX9XXX · 2 holders which blocks → WINDSTREAM ARKANSAS, INC. 1691 PRATTSVL AR
— 870-700 not yet reported which blocks → AR
— 870-702 0XXX4XXX8XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 W MEMPHIS AR
— 870-703 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 HOPE AR
— 870-704 0XXX which blocks → WINDSTREAM ARKANSAS, INC. 1691 HARRISON AR
— 870-706 1XXX2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks → ONVOY, LLC - AR 348F MT HOME AR
— 870-710 4XXX5XXX6XXX7XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 CHEROKEVLG AR
— 870-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AR
— 870-715 none assigned yet which blocks → WINDSTREAM ARKANSAS, INC. 1691 HARRISON AR
— 870-717 0XXX1XXX2XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALTHEIMER AR
— 870-718 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PINE BLUFF AR
— 870-722 0XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 HOPE AR
— 870-725 5XXX6XXX7XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 SMACKOVER AR
— 870-728 6XXX which blocks → CSC VOICE, LLC 612K MARVELL AR
— 870-729 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AR 5179 HOPE AR
— 870-730 3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 PINE BLUFF AR
— 870-731 1XXX3XXX8XXX9XXX · 3 holders which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 MCCRORY AR
— 870-732 not yet reported which blocks → SOUTHWESTERN BELL 9533 W MEMPHIS AR
— 870-733 not yet reported which blocks → SOUTHWESTERN BELL 9533 W MEMPHIS AR
— 870-734 2XXX which blocks → SOUTHWESTERN BELL 9533 BRINKLEY AR
— 870-735 not yet reported which blocks → SOUTHWESTERN BELL 9533 W MEMPHIS AR
— 870-737 0XXX5XXX7XXX8XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 PORTLAND AR
— 870-739 0XXX6XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 MARION AR
— 870-740 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLYTHEVL AR
— 870-741 not yet reported which blocks → WINDSTREAM ARKANSAS, INC. 1691 HARRISON AR
— 870-743 not yet reported which blocks → WINDSTREAM ARKANSAS, INC. 1691 HARRISON AR
— 870-744 0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → SOUTHWESTERN BELL 9533 TUPELO AR
— 870-746 not yet reported which blocks → MOUNTAIN VIEW TELEPHONE COMPANY 1712 TIMBO AR
— 870-747 7XXX8XXX · 2 holders which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1143 CLARENDON AR
— 870-748 0XXX4XXX5XXX7XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 CALION AR
— 870-749 1XXX which blocks → WINDSTREAM ARKANSAS, INC. 1691 OAK GROVE AR
— 870-752 1XXX5XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRINKLEY AR
— 870-753 2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 HELENA AR
— 870-755 0XXX3XXX4XXX6XXX8XXX9XXX · 6 holders which blocks → SOUTHWESTERN BELL 9533 PARKIN AR
— 870-757 not yet reported which blocks → MOUNTAIN VIEW TELEPHONE COMPANY 1712 FIFTYSIX AR
— 870-759 3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → SOUTHWESTERN BELL 9533 WALNUT RDG AR
— 870-761 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JONESBORO AR
— 870-762 not yet reported which blocks → SOUTHWESTERN BELL 9533 BLYTHEVL AR
— 870-763 not yet reported which blocks → SOUTHWESTERN BELL 9533 BLYTHEVL AR
— 870-764 not yet reported which blocks → E. RITTER TEL. CO. 1722 DYESS AR
— 870-765 9XXX which blocks → WINDSTREAM ARKANSAS, INC. 1691 LEOLA AR
— 870-766 2XXX3XXX6XXX7XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 ALTHEIMER AR
— 870-768 0XXX2XXX3XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → SOUTHWESTERN BELL 9533 MORO AR
— 870-769 1XXX3XXX4XXX5XXX7XXX · 4 holders which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 BIGGERS AR
— 870-770 1XXX3XXX4XXX5XXX7XXX · 2 holders which blocks → CSC VOICE, LLC 612K BAY AR
— 870-772 not yet reported which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 TEXARKANA AR
— 870-773 not yet reported which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 TEXARKANA AR
— 870-774 not yet reported which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 TEXARKANA AR

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.