NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2018-09-27 289-519 not yet reported which blocks → Videotron Ltd. 383F Port Hope —
2018-09-27 343-295 not yet reported which blocks → Videotron Ltd. 383F Napanee —
2018-09-27 343-325 not yet reported which blocks → Videotron Ltd. 383F Trenton —
2018-09-27 343-335 not yet reported which blocks → Videotron Ltd. 383F Prescott —
2018-09-27 442-302 0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 4 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LUCERNEVLY CA
2018-09-27 562-399 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F DOWNEY CA
2018-09-27 573-510 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSON MO
2018-09-27 608-889 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F STOUGHTON WI
2018-09-27 657-317 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SILVERADO CA
2018-09-27 667-256 0–9 XXXall 10 · 5 holders which blocks → EXIANT COMMUNICATIONS LLC 114J ABERDEEN MD
2018-09-27 725-209 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF NEVADA, LLC - NV 408F INDIAN SPG NV
2018-09-27 737-246 0–9 XXXall 10 · 3 holders which blocks → AIRESPRING, INC. 996H AUSTIN TX
2018-09-27 747-281 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNFN PACM CA
2018-09-27 813-535 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E TAMPASTH FL
2018-09-27 825-307 not yet reported which blocks → Videotron Ltd. 383F Picture Butte —
2018-09-27 825-337 not yet reported which blocks → Videotron Ltd. 383F Taber —
2018-09-27 870-686 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - AR 196F BODCAW AR
2018-09-27 930-206 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D HANOVER IN
2018-09-27 930-207 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D SCIPIO IN
2018-09-27 985-289 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F FRANKLINTN LA
2018-09-26 218-490 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 FOSSTON MN
2018-09-26 236-490 not yet reported which blocks → Videotron Ltd. 383F Cranbrook —
2018-09-26 236-510 not yet reported which blocks → Videotron Ltd. 383F Chilliwack —
2018-09-26 313-351 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E DETROITZN3 MI
2018-09-26 337-469 0–9 XXXall 10 · 7 holders which blocks → LAFAYETTE CITY-PARISH CONSOLIDATED GOVERNMENT - LA 9002 CARENCRO LA
2018-09-26 343-405 not yet reported which blocks → Videotron Ltd. 383F Morrisburg —
2018-09-26 385-283 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - UT 117F PROVO UT
2018-09-26 423-583 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F SULIVNGDNS TN
2018-09-26 571-397 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN08 VA
2018-09-26 571-634 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN17 VA
2018-09-26 571-685 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2018-09-26 587-522 not yet reported which blocks → Videotron Ltd. 383F Coaldale —
2018-09-26 587-821 not yet reported which blocks → Videotron Ltd. 383F Lethbridge —
2018-09-26 680-204 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NATURALBDG NY
2018-09-26 719-401 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CO 078F PEYTON CO
2018-09-26 803-871 0XXX1XXX2XXX3XXX4XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F SUMMERTON SC
2018-09-26 845-846 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H NARROWSBG NY
2018-09-26 947-210 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 PONTIAC MI
2018-09-26 959-207 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - CT 199F COLCHESTER CT
2018-09-25 231-310 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLCV - MI 543C FALMOUTH MI
2018-09-25 236-560 not yet reported which blocks → Videotron Ltd. 383F Aspen Park —
2018-09-25 256-692 0–9 XXXall 10 · 6 holders which blocks → TELNYX LLC 073H HUNTSVILLE AL
2018-09-25 343-315 not yet reported which blocks → Videotron Ltd. 383F Brighton —
2018-09-25 431-720 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Brandon —
2018-09-25 480-536 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2018-09-25 484-613 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F LEHIGHTON PA
2018-09-25 517-500 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLCV - MI 543C SUNFIELD MI
2018-09-25 531-225 0–9 XXXall 10 · 3 holders which blocks → AIRUS, INC. - NE 478H OMAHA NE
2018-09-25 534-400 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - WI 225C WAUPACA WI
2018-09-25 581-860 not yet reported which blocks → Videotron Ltd. 8306 Saint-Bernard-de-Dorchester —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.