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
2012-03-28 289-862 not yet reported which blocks → Primus Telecommunications Canada Inc. 201A Milton —
2012-03-28 289-863 not yet reported which blocks → Primus Telecommunications Canada Inc. 201A Oakville —
2012-03-28 385-206 0–9 XXXall 10 · 7 holders which blocks → T-MOBILE USA, INC. 6529 OGDEN UT
2012-03-28 435-316 none assigned yet which blocks → NAVAJO COMM CO INC - UT DBA NAVAJO COMM UT 4451 MONUMNTVLY UT
2012-03-28 504-413 0–9 XXXwhole prefix which blocks → VOICESTREAM GSM I, LLC 150C NEWORLEANS LA
2012-03-28 705-398 not yet reported which blocks → Bragg Communications Inc. 4878 Little Current —
2012-03-28 812-808 4XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J HELTONVL IN
2012-03-28 832-617 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2012-03-27 336-493 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ASHEBORO NC
2012-03-27 469-282 0–9 XXXwhole prefix which blocks → SOUTHWESTERN BELL TELEPHONE COMPANY - TX 7726 IRVING TX
2012-03-27 587-258 not yet reported which blocks → TELUS 8084 Fort McMurray —
2012-03-27 620-208 not yet reported which blocks → CABLE ONE VOIP, LLC 555G EMPORIA KS
2012-03-27 864-309 0–9 XXXall 10 · 4 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ANDERSON SC
2012-03-27 872-206 0–9 XXXall 10 · 7 holders which blocks → COMCAST IP PHONE, LLC 318J CHICGOZN04 IL
2012-03-27 902-501 not yet reported which blocks → Aliant Telecom (NS) 8089 Halifax —
2012-03-27 902-503 not yet reported which blocks → Aliant Telecom (NS) 8089 Halifax —
2012-03-27 902-504 not yet reported which blocks → Aliant Telecom (NS) 8089 Yarmouth —
2012-03-27 902-507 not yet reported which blocks → Aliant Telecom (NS) 8089 New Glasgow —
2012-03-27 902-520 not yet reported which blocks → Aliant Telecom (NS) 8089 Halifax —
2012-03-26 434-829 0–9 XXXall 10 · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F EMPORIA VA
2012-03-26 470-723 0–9 XXXall 10 · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA NE GA
2012-03-26 470-767 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA NE GA
2012-03-26 513-581 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-03-26 808-313 0–9 XXXall 10 · 4 holders which blocks → SERVPAC INCORPORATED - HI 517G HILO HI
2012-03-26 808-698 0–9 XXXall 10 · 4 holders which blocks → SERVPAC INCORPORATED - HI 517G LIHUE HI
2012-03-26 808-727 0–9 XXXall 10 · 6 holders which blocks → SERVPAC INCORPORATED - HI 517G WAILUKU HI
2012-03-26 830-770 0XXX1XXX6XXX7XXX8XXX · 3 holders which blocks → VTX COMMUNICATIONS, LLC 776A JOURDANTON TX
2012-03-26 830-771 0XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → VTX COMMUNICATIONS, LLC 776A CHARLOTTE TX
2012-03-26 918-206 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 TULSA OK
2012-03-23 289-536 not yet reported which blocks → Iristel Inc. 154E Woodbridge —
2012-03-23 289-914 not yet reported which blocks → Iristel Inc. 154E Streetsville —
2012-03-23 289-985 not yet reported which blocks → Iristel Inc. 154E Whitby —
2012-03-23 415-603 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SNFC CNTRL CA
2012-03-23 579-987 not yet reported which blocks → Iristel Inc. 154E Ste-Therese —
2012-03-23 579-990 not yet reported which blocks → Iristel Inc. 154E St-Jerome —
2012-03-22 204-505 not yet reported which blocks → Shaw Telecom Inc. 497E Winnipeg —
2012-03-22 226-526 not yet reported which blocks → Fibernetics Corporation 464D Windsor —
2012-03-22 240-734 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - MD 071F SMITHSBURG MD
2012-03-22 249-888 not yet reported which blocks → Fibernetics Corporation 464D Barrie —
2012-03-22 289-903 not yet reported which blocks → Iristel Inc. 154E Newmarket —
2012-03-22 289-917 not yet reported which blocks → Iristel Inc. 154E Maple —
2012-03-22 320-316 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MN 184D ST CLOUD MN
2012-03-22 343-884 not yet reported which blocks → Fibernetics Corporation 464D Kingston —
2012-03-22 407-205 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E ORLANDO FL
2012-03-22 415-590 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SNFC CNTRL CA
2012-03-22 470-554 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF GEORGIA, LLC - GA 909E ATLANTA NE GA
2012-03-22 470-809 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF GEORGIA, LLC - GA 909E ATLANTA GA
2012-03-22 509-491 0–9 XXXall 10 · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 KENNEWICK WA
2012-03-22 581-309 not yet reported which blocks → Bell Mobility 6574 Quebec —
2012-03-22 581-337 not yet reported which blocks → Bell Mobility 6574 Riviere-du-Loup —

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.