NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 870-237 2XXX which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1143 LAKE CITY AR
— 870-238 0XXX which blocks → SOUTHWESTERN BELL 9533 WYNNE AR
— 870-239 not yet reported which blocks → SOUTHWESTERN BELL 9533 PARAGOULD AR
— 870-240 not yet reported which blocks → SOUTHWESTERN BELL 9533 PARAGOULD AR
— 870-241 0XXX7XXX8XXX · 3 holders which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 ROE AR
— 870-243 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 JONESBORO AR
— 870-245 not yet reported which blocks → SOUTHWESTERN BELL 9533 ARKADLPHIA AR
— 870-246 not yet reported which blocks → SOUTHWESTERN BELL 9533 ARKADLPHIA AR
— 870-247 8XXX which blocks → SOUTHWESTERN BELL 9533 PINE BLUFF AR
— 870-248 not yet reported which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 POCAHONTAS AR
— 870-249 0XXX2XXX4XXX5XXX · 2 holders which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 DELAPLAINE AR
— 870-251 0XXX6XXX7XXX8XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 BATESVILLE AR
— 870-252 0XXX2XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → SOUTHWESTERN BELL 9533 GRUBBS AR
— 870-253 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 JONESBORO AR
— 870-254 not yet reported which blocks → WINDSTREAM ARKANSAS, INC. 1691 CARTHAGE AR
— 870-255 none assigned yet which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 HAZEN AR
— 870-256 none assigned yet which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 DES ARC AR
— 870-257 not yet reported which blocks → BRIGHTSPEED OF ARKANSAS, LLC 1706 CHEROKEVLG AR
— 870-258 6XXX8XXX · 2 holders which blocks → BRIGHTSPEED OF ARKANSAS, LLC 1706 OXFORD AR
— 870-259 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 KNOBEL AR
— 870-261 9XXX which blocks → SOUTHWESTERN BELL 9533 FORREST CY AR
— 870-262 0XXX7XXX8XXX9XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 BATESVILLE AR
— 870-263 0XXX2XXX3XXX5XXX · 4 holders which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 GOULD AR
— 870-264 0XXX2XXX4XXX5XXX7XXX8XXX · 6 holders which blocks → SOUTHWESTERN BELL 9533 OIL TROUGH AR
— 870-265 0XXX8XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 LAKE VLG AR
— 870-266 0XXX2XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → BRIGHTSPEED OF ARKANSAS, LLC 1706 EVENNGSHAD AR
— 870-267 0XXX2XXX3XXX4XXX5XXX8XXX which blocks → SOUTHWESTERN BELL 9533 PINE BLUFF AR
— 870-268 not yet reported which blocks → SOUTHWESTERN BELL 9533 JONESBORO AR
— 870-269 not yet reported which blocks → MOUNTAIN VIEW TELEPHONE COMPANY 1712 MT VIEW AR
— 870-270 4XXX5XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FORREST CY AR
— 870-274 9XXX which blocks → WINDSTREAM ARKANSAS, INC. 1691 OKOLONA AR
— 870-276 0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 SUCCESS AR
— 870-282 0XXX6XXX7XXX · 2 holders which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 ST CHARLES AR
— 870-283 0XXX1XXX4XXX8XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 CAVE CITY AR
— 870-284 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TRUMANN AR
— 870-285 not yet reported which blocks → WINDSTREAM ARKANSAS, INC. 1691 MURFREESBO AR
— 870-286 not yet reported which blocks → WINDSTREAM ARKANSAS, INC. 1691 DIERKS AR
— 870-287 9XXX which blocks → WALNUT HILL TEL. CO. 1729 MINERALSPG AR
— 870-289 not yet reported which blocks → WINDSTREAM ARKANSAS, INC. 1691 LOCKESBURG AR
— 870-291 5XXX6XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 MELBOURNE AR
— 870-294 not yet reported which blocks → TRI-COUNTY TEL. CO., INC. 1726 LURTON AR
— 870-295 not yet reported which blocks → SOUTHWESTERN BELL 9533 MARIANNA AR
— 870-297 9XXX which blocks → BRIGHTSPEED OF ARKANSAS, LLC 1706 CALICOROCK AR
— 870-298 0XXX1XXX3XXX4XXX5XXX6XXX8XXX · 7 holders which blocks → SOUTHWESTERN BELL 9533 MARIANNA AR
— 870-304 not yet reported which blocks → WINDSTREAM ARKANSAS, INC. 1691 CROSSETT AR
— 870-305 not yet reported which blocks → WINDSTREAM ARKANSAS, INC. 1691 CROSSETT AR
— 870-307 none assigned yet which blocks → SOUTHWESTERN BELL 9533 BATESVILLE AR
— 870-308 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 MONTICELLO AR
— 870-309 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 EL DORADO AR
— 870-310 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 EL DORADO AR

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.