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
2012-03-07 778-739 not yet reported which blocks → Distributel 081E Osoyoos —
2012-03-07 778-740 not yet reported which blocks → Distributel 081E Peachland —
2012-03-07 778-741 not yet reported which blocks → Distributel 081E Westbank —
2012-03-07 867-322 not yet reported which blocks → Iristel Inc. 154E Whitehorse —
2012-03-07 867-888 not yet reported which blocks → Iristel Inc. 154E Inuvik —
2012-03-07 867-988 not yet reported which blocks → Iristel Inc. 154E Yellowknife —
2012-03-07 954-900 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G FTLAUDERDL FL
2012-03-07 979-206 0XXX which blocks → ONVOY, LLC - TX 903C LA GRANGE TX
2012-03-06 219-267 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F CEDAR LAKE IN
2012-03-06 289-499 not yet reported which blocks → Fibernetics Corporation 464D Brampton —
2012-03-06 312-509 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN01 IL
2012-03-06 331-210 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E ST CHARLES IL
2012-03-06 385-985 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PROVO UT
2012-03-06 587-772 not yet reported which blocks → Distributel 081E Edmonton —
2012-03-06 604-449 not yet reported which blocks → Distributel 081E Vancouver —
2012-03-06 702-956 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LAS VEGAS NV
2012-03-06 720-627 0–9 XXXall 10 · 5 holders which blocks → QWEST CORPORATION 9636 DENVER CO
2012-03-06 772-333 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G PTST LUCIE FL
2012-03-06 779-202 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 GALENA IL
2012-03-06 971-303 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2012-03-05 253-888 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F TACOMA WA
2012-03-05 269-459 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 KALAMAZOO MI
2012-03-05 336-717 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 STONEVILLE NC
2012-03-05 402-803 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEWARD NE
2012-03-05 404-618 0–9 XXXall 10 · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2012-03-05 425-777 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F BELLEVUE WA
2012-03-05 435-355 0–9 XXXall 10 · 5 holders which blocks → EMERY TELECOMMUNICATIONS & VIDEO, INC. - UT 683H MOAB UT
2012-03-05 480-999 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PHOENIX AZ
2012-03-05 513-620 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 CINCINNATI OH
2012-03-05 520-415 0–9 XXXall 10 · 7 holders which blocks → MCC TELEPHONY LLC 593K NOGALES AZ
2012-03-05 567-310 not yet reported which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E SULLIVAN OH
2012-03-05 575-424 2XXX4XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NM 5470 VIRDEN NM
2012-03-05 602-777 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PHOENIX AZ
2012-03-05 623-777 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PHOENIX AZ
2012-03-05 651-888 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF MINNESOTA, LLC - MN 107F TWINCITIES MN
2012-03-05 763-777 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF MINNESOTA, LLC - MN 107F TWINCITIES MN
2012-03-05 770-224 0–9 XXXall 10 · 4 holders which blocks → WINDSTREAM GEORGIA COMMUNICATIONS CORP. 4332 CANTON GA
2012-03-05 857-777 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F CAMBRIDGE MA
2012-03-05 917-982 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NWYRCYZN06 NY
2012-03-02 252-494 0–9 XXXall 10 · 7 holders which blocks → UNITED STATES CELLULAR - NC 6282 BELHAVEN NC
2012-03-02 314-695 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 LADUE MO
2012-03-02 323-458 0–9 XXXall 10 · 4 holders which blocks → METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2012-03-02 469-308 0–9 XXXwhole prefix which blocks → LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 LEWISVILLE TX
2012-03-02 513-609 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 CINCINNATI OH
2012-03-02 516-206 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 NASSAUZN06 NY
2012-03-02 559-317 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 FRESNO CA
2012-03-02 567-308 not yet reported which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E NOVA OH
2012-03-02 602-829 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-03-02 720-729 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CO 078F KEENESBURG CO
2012-03-02 757-862 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J NRFOLKZON2 VA

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.