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
— 870-216 not yet reported which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 TEXARKANA AR
— 870-217 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 NEWPORT AR
— 870-218 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → VONAGE AMERICA LLC 197D PINE BLUFF AR
— 870-219 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JONESBORO AR
— 870-222 0XXX which blocks → SOUTHWESTERN BELL 9533 MCGEHEE AR
— 870-223 not yet reported which blocks → WINDSTREAM ARKANSAS, INC. 1691 GLENWOOD AR
— 870-225 0XXX2XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → METROPCS, INC. 5562 W MEMPHIS AR
— 870-226 0XXX which blocks → SOUTHWESTERN BELL 9533 WARREN AR
— 870-230 0XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 ARKADLPHIA AR
— 870-231 0XXX2XXX3XXX7XXX8XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 CAMDEN AR
— 870-234 9XXX which blocks → SOUTHWESTERN BELL 9533 MAGNOLIA AR
— 870-235 1XXX8XXX which blocks → SOUTHWESTERN BELL 9533 MAGNOLIA AR
— 870-236 not yet reported which blocks → SOUTHWESTERN BELL 9533 PARAGOULD AR
— 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

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.