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
2012-03-05 602-777 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
2012-03-02 845-414 0–9 XXXall 10 · 7 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SPRING VLY NY
2012-03-02 845-663 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 KINGSTON NY
2012-03-02 914-336 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WSCHSTZN03 NY
2012-03-02 917-808 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 NWYRCYZN07 NY
2012-03-02 917-942 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 NWYRCYZN12 NY
2012-03-02 917-943 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 NWYRCYZN08 NY
2012-03-02 917-963 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN09 NY
2012-03-02 980-320 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 GASTONIA NC
2012-03-01 249-302 not yet reported which blocks → TELUS Integrated Communications 2782 Algoma Mills —
2012-03-01 289-723 not yet reported which blocks → Iristel Inc. 154E St. Catharines-Thorold —
2012-03-01 438-388 not yet reported which blocks → Fibernetics Corporation 464D Montreal —
2012-03-01 504-408 0–9 XXXall 10 · 2 holders which blocks → VOICESTREAM GSM I, LLC 150C NEWORLEANS LA
2012-03-01 587-287 not yet reported which blocks → Fibernetics Corporation 464D Calgary —
2012-03-01 587-487 not yet reported which blocks → Fibernetics Corporation 464D Edmonton —
2012-03-01 604-371 not yet reported which blocks → Shaw Telecom Inc. 497E Fort Langley —
2012-03-01 604-380 not yet reported which blocks → Shaw Telecom Inc. 497E Haney —
2012-03-01 604-390 not yet reported which blocks → Shaw Telecom Inc. 497E Squamish —
2012-03-01 604-405 not yet reported which blocks → Shaw Telecom Inc. 497E Whonnock —
2012-03-01 604-457 not yet reported which blocks → Shaw Telecom Inc. 497E Pitt Meadows —
2012-03-01 647-872 not yet reported which blocks → Fibernetics Corporation 464D Toronto —
2012-03-01 647-874 not yet reported which blocks → Fibernetics Corporation 464D Toronto —
2012-03-01 778-353 not yet reported which blocks → Shaw Telecom Inc. 497E Ganges —
2012-03-01 778-354 not yet reported which blocks → Shaw Telecom Inc. 497E Fulford Harbour —
2012-03-01 778-356 not yet reported which blocks → Shaw Telecom Inc. 497E Cobble Hill —
2012-03-01 778-776 not yet reported which blocks → Fibernetics Corporation 464D Vancouver —
2012-03-01 819-307 not yet reported which blocks → Iristel Inc. 154E Gatineau —
2012-03-01 856-777 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F VINELAND NJ
2012-03-01 985-208 0–9 XXXall 10 · 5 holders which blocks → VOICESTREAM GSM I, LLC 150C HOUMA LA
2012-02-29 502-631 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY 6500 LOUISVILLE KY
2012-02-29 604-332 not yet reported which blocks → Iristel Inc. 154E Richmond —
2012-02-29 647-495 not yet reported which blocks → Iristel Inc. 154E Toronto —
2012-02-29 647-496 not yet reported which blocks → Iristel Inc. 154E Toronto —

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.