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
2012-09-25 604-394 not yet reported which blocks → Distributel 081E Richmond —
2012-09-25 724-900 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 CRIDERSCOR PA
2012-09-25 732-569 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 TOMS RIVER NJ
2012-09-25 778-585 not yet reported which blocks → TELUS Mobility 8301 Courtenay —
2012-09-25 862-225 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F PASSAIC NJ
2012-09-25 909-347 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E FONTANA CA
2012-09-24 201-846 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 RAMSEY NJ
2012-09-24 239-529 0–9 XXXall 10 · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J NAPLES FL
2012-09-24 239-888 0–9 XXXall 10 · 3 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G FORT MYERS FL
2012-09-24 415-741 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SNFC MT-EV CA
2012-09-24 520-442 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - AZ 587F BENSON AZ
2012-09-24 605-936 0XXX1XXX2XXX3XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 HURON SD
2012-09-24 646-629 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
2012-09-24 646-771 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
2012-09-24 661-429 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 LANCASTER CA
2012-09-24 720-538 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 FORTLUPTON CO
2012-09-24 763-301 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 CAMBRIDGE MN
2012-09-24 818-856 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E NO HOLLYWD CA
2012-09-24 917-246 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN06 NY
2012-09-24 917-789 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN07 NY
2012-09-21 219-302 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 GARY IN
2012-09-21 267-469 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PHLDLPHZN4 PA
2012-09-21 872-207 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2012-09-21 917-530 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN06 NY
2012-09-21 917-724 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN15 NY
2012-09-21 984-232 0–9 XXXall 10 · 7 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 RALEIGH NC
2012-09-20 443-906 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF MARYLAND, LLC 568G SEVERNA PK MD
2012-09-20 541-802 0–9 XXXall 10 · 6 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K OAKLAND OR
2012-09-19 210-608 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2012-09-19 443-713 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF MARYLAND, LLC 568G GLENBURNIE MD
2012-09-19 786-504 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E HOMESTEAD FL
2012-09-19 832-624 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON TX
2012-09-19 832-625 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON TX
2012-09-18 204-710 not yet reported which blocks → Westman Media Cooperative Ltd 120F Rivers —
2012-09-18 438-765 not yet reported which blocks → TELUS Mobility 8303 Montreal —
2012-09-18 587-524 not yet reported which blocks → Shaw Telecom Inc. 497E Edmonton —
2012-09-17 252-513 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K AHOSKIE NC
2012-09-17 440-504 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BEREA OH
2012-09-17 520-460 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 TUCSON AZ
2012-09-17 734-515 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WHITMORELK MI
2012-09-17 951-383 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 TEMECULA CA
2012-09-14 208-916 0–9 XXXall 10 · 3 holders which blocks → ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4321 COERDALENE ID
2012-09-14 510-775 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E OKLD ALMD CA
2012-09-14 530-379 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 WOODLAND CA
2012-09-14 605-679 0–9 XXXall 10 · 6 holders which blocks → QWEST CORPORATION 9631 SIOUX FLS SD
2012-09-14 817-941 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ARLINGTON TX
2012-09-14 843-231 0–9 XXXall 10 · 4 holders which blocks → FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - SC 4335 MYRTLE BCH SC
2012-09-14 906-666 7XXX which blocks → CLEAR RATE COMMUNICATIONS, LLC 046L MARQUETTE MI
2012-09-13 317-719 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 INDIANAPLS IN
2012-09-13 581-596 not yet reported which blocks → Telecommunications Xittel Inc 247F Dolbeau —

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.