NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 479-203 0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 5 holders which blocks → SOUTHWESTERN BELL TELEPHONE COMPANY - AR 8870 ELMSPRINGS AR
— 479-204 not yet reported which blocks → SOUTHWESTERN BELL 9533 BENTONVL AR
— 479-205 not yet reported which blocks → SOUTHWESTERN BELL TELEPHONE COMPANY - AR 8870 ELMSPRINGS AR
— 479-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AR
— 479-222 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J FORT SMITH AR
— 479-226 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 FORT SMITH AR
— 479-229 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 DARDANELLE AR
— 479-232 not yet reported which blocks → MADISON COUNTY TEL. CO., INC. 1709 AURORA AR
— 479-234 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AR 5179 MENA AR
— 479-235 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - AR 196F VAN BUREN AR
— 479-236 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FAYETTEVL AR
— 479-238 none assigned yet which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1143 SILOAM SPG AR
— 479-243 9XXX which blocks → SOUTHWESTERN BELL 9533 MENA AR
— 479-246 8XXX which blocks → SOUTHWESTERN BELL 9533 ROGERS AR
— 479-248 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 ELMSPRINGS AR
— 479-249 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J FAYETTEVL AR
— 479-251 0XXX8XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 FAYETTEVL AR
— 479-253 not yet reported which blocks → SOUTHWESTERN BELL 9533 EUREKA SPG AR
— 479-254 not yet reported which blocks → SOUTHWESTERN BELL 9533 BENTONVL AR
— 479-255 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → COMCAST IP PHONE, LLC 318J HACKETT AR
— 479-262 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J VAN BUREN AR
— 479-263 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 FAYETTEVL AR
— 479-264 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RUSSELLVL AR
— 479-266 not yet reported which blocks → PRAIRIE GROVE TELEPHONE COMPANY 1718 FARMINGTON AR
— 479-267 not yet reported which blocks → PRAIRIE GROVE TELEPHONE COMPANY 1718 FARMINGTON AR
— 479-269 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J MANSFIELD AR
— 479-271 not yet reported which blocks → SOUTHWESTERN BELL 9533 BENTONVL AR
— 479-272 not yet reported which blocks → ARKWEST COMMUNICATIONS, INC. 1734 PLAINVIEW AR
— 479-273 not yet reported which blocks → SOUTHWESTERN BELL 9533 BENTONVL AR
— 479-277 not yet reported which blocks → SOUTHWESTERN BELL 9533 BENTONVL AR
— 479-283 none assigned yet which blocks → T-MOBILE USA, INC. 6529 FAYETTEVL AR
— 479-284 1XXX which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 HECTOR AR
— 479-285 none assigned yet which blocks → T-MOBILE USA, INC. 6529 FORT SMITH AR
— 479-288 not yet reported which blocks → SOUTHWESTERN BELL 9533 FORT SMITH AR
— 479-290 not yet reported which blocks → SOUTHWESTERN BELL 9533 SPRINGDALE AR
— 479-291 7XXX which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 MAYSVILLE AR
— 479-292 6XXX which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 SALUS AR
— 479-293 7XXX which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 LONDON AR
— 479-294 2XXX3XXX7XXX · 3 holders which blocks → COMCAST IP PHONE, LLC 318J WEST FORK AR
— 479-296 none assigned yet which blocks → COMCAST IP PHONE, LLC 318J ELKINS AR
— 479-297 1XXX2XXX9XXX · 3 holders which blocks → COMCAST IP PHONE, LLC 318J MULBERRY AR
— 479-298 6XXX which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 SULPHURSPG AR
— 479-299 not yet reported which blocks → ARKWEST COMMUNICATIONS, INC. 1734 BLUFFTON AR
— 479-300 0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J FARMINGTON AR
— 479-306 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 SPRINGDALE AR
— 479-309 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J MIDLAND AR
— 479-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AR
— 479-326 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J BENTONVL AR
— 479-331 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1142 DOVER AR
— 479-344 2XXX3XXX4XXX6XXX · 3 holders which blocks → COMCAST IP PHONE, LLC 318J GRAVETTE AR

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.