NumberResearch Membership · Data 09/23/2026

Recent prefix assignments

357 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026

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. 39
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 27
ONVOY, LLC - NJ 20
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
2004-04-06 785-324 5XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 6532 RUSSELL KS
2004-04-06 785-367 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - KS 2240 OSAGE CITY KS
2004-04-06 785-385 none assigned yet which blocks → RURAL TEL. SERVICE CO., INC. DBA NEX-TECH 1826 RUSSELL KS
2004-04-06 785-433 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - KS 2240 GARNETT KS
2004-04-05 864-389 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENWOOD SC
2004-04-05 920-647 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → UNITED STATES CELLULAR - WI 6274 WAUTOMA WI
2004-04-02 520-254 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 WILLCOX AZ
2004-04-02 612-233 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TWINCITIES MN
2004-04-02 910-300 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 BURGAW NC
2004-04-01 336-289 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 7973 HIGH POINT NC
2004-04-01 469-362 0–9 XXXwhole prefix which blocks → SOUTHWESTERN BELL 9533 FRISCO TX
2004-04-01 740-624 4XXX5XXX6XXX7XXX8XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 ZANESVILLE OH
2004-04-01 810-247 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MONTROSE MI
2004-04-01 989-323 2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 CHESANING MI
2004-04-01 989-324 1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PINCONNING MI
2004-03-31 765-387 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CHESTERFLD IN
2004-03-30 214-279 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALLAS TX
2004-03-30 250-682 not yet reported which blocks → Bell Mobility 6574 South Kamloops —
2004-03-30 250-938 not yet reported which blocks → Bell Mobility 6574 Vernon —
2004-03-30 250-981 not yet reported which blocks → Bell Mobility 6574 Prince George —
2004-03-30 450-898 not yet reported which blocks → TELUS Mobility 8303 Joliette —
2004-03-30 512-888 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2004-03-30 601-819 4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 WIGGINS MS
2004-03-30 678-267 0–9 XXXall 10 · 4 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 GAINESVL GA
2004-03-30 772-228 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 6 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 SEBASTIAN FL
2004-03-30 832-383 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HOUSTON TX
2004-03-29 219-484 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 GARY IN
2004-03-29 403-847 not yet reported which blocks → TELUS 8084 Rocky Mountain House —
2004-03-29 618-505 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 TROY IL
2004-03-29 618-717 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 BETHALTO IL
2004-03-29 928-249 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LKMHVRNCHS AZ
2004-03-26 208-272 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID 678B BOISE ID
2004-03-26 228-224 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 GULFPORT MS
2004-03-26 256-672 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SCOTTSBORO AL
2004-03-26 318-587 2XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 COTTONPORT LA
2004-03-26 337-410 3XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 TURKEY CRK LA
2004-03-26 337-416 1XXX2XXX7XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 REEVES LA
2004-03-26 416-853 not yet reported which blocks → ExaTEL Inc. 3147 Toronto —
2004-03-26 606-341 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY 6500 BURNSIDE KY
2004-03-26 706-991 5XXX6XXX7XXX8XXX · 3 holders which blocks → BROADRIVER COMMUNICATION CORPORATION 0172 EATONTON GA
2004-03-26 780-410 not yet reported which blocks → TELUS 8084 Sherwood Park —
2004-03-26 806-203 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALLISON TX
2004-03-26 806-213 0–9 XXXall 10 · 2 holders which blocks → VEXUS 4913 PLAINVIEW TX
2004-03-26 806-993 0–9 XXXwhole prefix which blocks → VEXUS 4913 LUBBOCK TX
2004-03-26 940-991 3XXX which blocks → ONVOY, LLC - TX 903C WICHITAFLS TX
2004-03-25 231-209 not yet reported which blocks → TELNET WORLDWIDE, INC. 817J SUTTONSBAY MI
2004-03-25 256-266 1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CENTRE AL
2004-03-25 256-641 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GERALDINE AL
2004-03-25 256-744 7XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALBERTVL AL
2004-03-25 270-696 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HODGENVL KY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.