NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
2012-02-15 865-240 0–9 XXXall 10 · 4 holders which blocks → POWERTEL NASHVILLE LICENSES, INC. 7476 KNOXVILLE TN
2012-02-15 914-331 0–9 XXXall 10 · 4 holders which blocks → TELENGY L.L.C. - NY 473G LEWISBORO NY
2012-02-14 202-813 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 WSHNGTNZN1 DC
2012-02-14 204-817 not yet reported which blocks → Iristel Inc. 154E Oakbank —
2012-02-14 210-510 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2012-02-14 226-457 not yet reported which blocks → Iristel Inc. 154E Clinton —
2012-02-14 289-460 not yet reported which blocks → Iristel Inc. 154E Ajax-Pickering —
2012-02-14 289-670 not yet reported which blocks → Iristel Inc. 154E Milton —
2012-02-14 306-993 not yet reported which blocks → Iristel Inc. 154E Regina —
2012-02-14 424-314 0–9 XXXwhole prefix which blocks → PACIFIC BELL 9740 BEVERLYHLS CA
2012-02-14 424-315 0–9 XXXwhole prefix which blocks → PACIFIC BELL 9740 BEVERLYHLS CA
2012-02-14 587-407 not yet reported which blocks → Iristel Inc. 154E Edmonton —
2012-02-14 587-408 not yet reported which blocks → Iristel Inc. 154E Edmonton —
2012-02-14 786-442 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 MIAMI FL
2012-02-14 806-490 not yet reported which blocks → VEXUS 4913 ABERNATHY TX
2012-02-14 818-798 0–9 XXXall 10 · 4 holders which blocks → PACIFIC BELL 9740 RESEDA CA
2012-02-14 859-415 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 COVINGTON KY
2012-02-14 859-638 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY 6500 COVINGTON KY
2012-02-14 929-234 0–9 XXXall 10 · 5 holders which blocks → CSC VOICE, LLC 612K NWYRCYZN06 NY
2012-02-13 267-264 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2012-02-13 267-326 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2012-02-13 267-431 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2012-02-13 312-216 0–9 XXXall 10 · 7 holders which blocks → FIRST COMMUNICATIONS, LLC 460K CHICGOZN01 IL
2012-02-13 404-596 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2012-02-13 570-536 0–9 XXXall 10 · 5 holders which blocks → SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 CARBONDALE PA
2012-02-13 575-325 not yet reported which blocks → PLATEAU TELECOMMUNICATIONS, INC. - NM 777B CANNON AFB NM
2012-02-13 720-599 0–9 XXXall 10 · 2 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 3467 DENVER CO
2012-02-13 903-902 not yet reported which blocks → ETEX COMMUNCATIONS, LLC DBA ETEX TELECOM - TX 3196 GLADEWATER TX
2012-02-13 918-480 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 SPERRY OK
2012-02-13 970-549 0–9 XXXall 10 · 6 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K GRAND JCT CO
2012-02-10 202-808 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J WSHNGTNZN1 DC
2012-02-10 202-810 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - DC 074F WSHNGTNZN1 DC
2012-02-10 306-514 not yet reported which blocks → SaskTel Mobility 9868 Saskatoon —
2012-02-10 306-516 not yet reported which blocks → SaskTel Mobility 9868 Yorkton —
2012-02-10 319-200 not yet reported which blocks → IMON COMMUNICATIONS, LLC - IA 695G CEDAR RPDS IA
2012-02-10 423-480 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 KINGSPORT TN
2012-02-10 512-808 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J AUSTIN TX
2012-02-10 571-298 0–9 XXXall 10 · 8 holders which blocks → METROPCS, INC. 5562 DALE CITY VA
2012-02-10 587-325 not yet reported which blocks → Iristel Inc. 154E Calgary —
2012-02-10 587-326 not yet reported which blocks → Iristel Inc. 154E Calgary —
2012-02-10 671-972 not yet reported which blocks → PTI PACIFICA INC. 387C AGANA GU
2012-02-10 702-713 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 LAS VEGAS NV
2012-02-10 702-717 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 LAS VEGAS NV
2012-02-10 702-754 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 LAS VEGAS NV
2012-02-10 702-763 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2012-02-10 705-621 not yet reported which blocks → Bell Aliant, a division of Bell Canada 709G Sudbury —
2012-02-10 719-305 0–9 XXXwhole prefix which blocks → LEVEL 3 TELECOM OF COLORADO, LLC - CO 7590 COLORDOSPG CO
2012-02-10 862-260 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 TELECOM OF NEW JERSEY, LP - NJ 2771 MORRISTOWN NJ
2012-02-10 872-203 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2012-02-09 226-846 not yet reported which blocks → Brooke Telecom Co-operative Ltd. 692G Alvinston —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.