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
2012-02-17 646-412 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NWYRCYZN01 NY
2012-02-17 702-718 0–9 XXXwhole prefix which blocks → ONVOY, LLC - NV 029F LAS VEGAS NV
2012-02-17 720-623 0–9 XXXwhole prefix which blocks → ONVOY, LLC - CO 026D DENVER CO
2012-02-17 775-405 0–9 XXXall 10 · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NV 4805 ELY NV
2012-02-17 941-254 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 BRADENTON FL
2012-02-16 407-337 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C ORLANDO FL
2012-02-16 408-508 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 CAMPBELL CA
2012-02-16 408-560 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LOS GATOS CA
2012-02-16 480-426 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2012-02-16 575-252 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NM 206F ANGEL FIRE NM
2012-02-16 612-502 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2012-02-16 786-480 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C NORTH DADE FL
2012-02-16 813-430 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C TAMPAWST FL
2012-02-16 832-650 0–9 XXXwhole prefix which blocks → ONVOY, LLC - TX 903C HOUSTON TX
2012-02-16 857-219 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MA 892D NEWTON MA
2012-02-16 915-777 0–9 XXXall 10 · 3 holders which blocks → INTRADO COMMUNICATIONS, LLC 9558 EL PASO TX
2012-02-16 971-260 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F CLATSKANIE OR
2012-02-16 971-512 0–9 XXXwhole prefix which blocks → ONVOY, LLC - OR 750E PORTLAND OR
2012-02-15 201-879 0–9 XXXall 10 · 6 holders which blocks → CABLEVISION LIGHTPATH, INC. - NJ 4948 RIDGEWOOD NJ
2012-02-15 219-239 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 GARY IN
2012-02-15 234-203 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CANTON OH
2012-02-15 306-513 not yet reported which blocks → SaskTel Mobility 9868 Moose Jaw —
2012-02-15 306-515 not yet reported which blocks → SaskTel Mobility 9868 Regina —
2012-02-15 352-530 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 LEESBURG FL
2012-02-15 502-709 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY 6500 LOUISVILLE KY
2012-02-15 587-390 not yet reported which blocks → Shaw Telecom Inc. 497E Calgary —
2012-02-15 616-259 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 GRAND RPDS MI
2012-02-15 647-873 not yet reported which blocks → Fibernetics Corporation 464D Toronto —
2012-02-15 734-343 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 LIVONIA MI
2012-02-15 775-870 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV 6458 RENO NV
2012-02-15 832-614 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2012-02-15 859-490 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY 6500 LEXINGTON KY
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

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.