NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

341 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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
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
2012-11-08 970-888 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CO 026D GREELEY CO
2012-11-08 970-999 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CO 026D FT COLLINS CO
2012-11-07 207-606 0–9 XXXall 10 · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - ME 882G YORK ME
2012-11-07 323-487 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2012-11-07 438-763 not yet reported which blocks → TELUS Mobility 8303 Montreal —
2012-11-07 484-280 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 ALLENTOWN PA
2012-11-07 614-907 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 COLUMBUS OH
2012-11-07 626-460 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E PSDN PSDN CA
2012-11-07 705-508 not yet reported which blocks → Bragg Communications Inc. 4878 Thessalon —
2012-11-07 705-509 not yet reported which blocks → Bragg Communications Inc. 4878 Iron Bridge —
2012-11-07 719-800 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CO 026D CALHAN CO
2012-11-07 760-867 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E VTVL ADLN CA
2012-11-07 802-638 0XXX1XXX3XXX6XXX8XXX9XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - VT 881G MILTON VT
2012-11-07 814-722 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 ERIE PA
2012-11-07 858-766 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C LA JOLLA CA
2012-11-07 902-391 not yet reported which blocks → Bell Mobility Aliant 329A Sheet Harbour —
2012-11-07 937-712 0–9 XXXall 10 · 7 holders which blocks → HORIZON SERVICES, INC. - OH 601G MOUNT ORAB OH
2012-11-06 402-513 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J OMAHA NE
2012-11-06 415-757 0–9 XXXall 10 · 7 holders which blocks → NUSO, LLC 551G SNFC CNTRL CA
2012-11-06 661-448 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G BKFD MAIN CA
2012-11-06 681-255 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BLUEFIELD WV
2012-11-06 716-710 0–9 XXXall 10 · 6 holders which blocks → NUSO, LLC 551G BUFFALO NY
2012-11-06 805-634 1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → NUSO, LLC 551G SNLUSOBSPO CA
2012-11-05 319-382 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G CEDAR RPDS IA
2012-11-05 515-608 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 551G DES MOINES IA
2012-11-05 520-999 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - AZ 630E TUCSON AZ
2012-11-05 563-362 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G DAVENPORT IA
2012-11-05 602-600 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2012-11-05 602-800 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2012-11-05 630-394 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E KANEVILLE IL
2012-11-05 805-394 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 OXNARD CA
2012-11-02 206-858 0–9 XXXall 10 · 5 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
2012-11-02 314-478 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2012-11-02 317-914 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 551G INDIANAPLS IN
2012-11-02 318-606 0–9 XXXall 10 · 6 holders which blocks → NUSO, LLC 551G SHREVEPORT LA
2012-11-02 424-285 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2012-11-02 469-413 0–9 XXXwhole prefix which blocks → SOUTHWESTERN BELL 9533 DALLAS TX
2012-11-02 469-419 0–9 XXXwhole prefix which blocks → SOUTHWESTERN BELL 9533 DALLAS TX
2012-11-02 478-336 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G MACON GA
2012-11-02 515-393 0–9 XXXall 10 · 5 holders which blocks → UNITED STATES CELLULAR - IA 6266 DES MOINES IA
2012-11-02 567-316 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TOLEDO OH
2012-11-02 581-622 not yet reported which blocks → TELUS Mobility 8303 Natashquan —
2012-11-02 581-682 not yet reported which blocks → Fibernetics Corporation 464D La Baie (Chicoutimi Co.) —
2012-11-02 581-683 not yet reported which blocks → Fibernetics Corporation 464D Chicoutimi —
2012-11-02 581-684 not yet reported which blocks → Fibernetics Corporation 464D Jonquiere —
2012-11-02 602-642 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-11-02 602-752 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-11-02 669-223 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 SNJS WEST CA
2012-11-02 720-585 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 DENVER CO
2012-11-02 805-420 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SANTAPAULA CA

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.