NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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
2021-02-26 813-668 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PLANT CITY FL
2021-02-26 825-718 not yet reported which blocks → Bell Mobility 6574 Calgary —
2021-02-26 825-719 not yet reported which blocks → Bell Mobility 6574 Calgary —
2021-02-26 863-799 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H LAKELAND FL
2021-02-26 864-500 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENWOOD SC
2021-02-26 873-490 not yet reported which blocks → TELUS Quebec 2243 St-Felix-de-Kingsey —
2021-02-26 873-530 not yet reported which blocks → TELUS Quebec 2243 St-Guillaume —
2021-02-26 904-670 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E GREENCVSPG FL
2021-02-26 904-895 0–9 XXXall 10 · 4 holders which blocks → TWILIO INTERNATIONAL, INC. 506J JACKSONVL FL
2021-02-26 941-432 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H PALMETTO FL
2021-02-25 210-956 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 SANANTONIO TX
2021-02-25 236-447 not yet reported which blocks → Bell Mobility 6574 Vancouver —
2021-02-25 236-501 not yet reported which blocks → Bell Mobility 6574 Vancouver —
2021-02-25 279-732 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H FOLSOM CA
2021-02-25 424-799 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MALIBU CA
2021-02-25 425-517 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 RENTON WA
2021-02-25 437-641 not yet reported which blocks → Bell Mobility 6574 Toronto —
2021-02-25 502-323 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - KY 896E BAGDAD KY
2021-02-25 510-973 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 OKLD BKLY CA
2021-02-25 548-328 not yet reported which blocks → Bell Mobility 6574 Brantford —
2021-02-25 579-830 not yet reported which blocks → TELUS Quebec 2243 Coteau-Landing —
2021-02-25 579-831 not yet reported which blocks → TELUS Quebec 2243 Knowlton —
2021-02-25 579-832 not yet reported which blocks → TELUS Quebec 2243 Riviere-Beaudette —
2021-02-25 579-833 not yet reported which blocks → TELUS Quebec 2243 St-Denis —
2021-02-25 581-446 not yet reported which blocks → Bell Mobility 6574 Quebec —
2021-02-25 619-657 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 LA MESA CA
2021-02-25 619-707 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 SNDG SNDG CA
2021-02-25 657-899 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SANTA ANA CA
2021-02-25 682-786 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H FORT WORTH TX
2021-02-25 707-858 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 SANTA ROSA CA
2021-02-25 709-322 not yet reported which blocks → Bragg Communications Inc. 4878 Benoit's Cove —
2021-02-25 709-345 not yet reported which blocks → Bragg Communications Inc. 4878 Lark Harbour —
2021-02-25 825-717 not yet reported which blocks → Bell Mobility 6574 Calgary —
2021-02-25 873-489 not yet reported which blocks → TELUS Quebec 2243 Low —
2021-02-25 916-707 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 SCRM MAIN CA
2021-02-25 951-866 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H RIVERSIDE CA
2021-02-24 218-572 4XXX which blocks → PAUL BUNYAN RURAL TELEPHONE COOP. 4814 WHITEEARTH MN
2021-02-24 218-581 4XXX which blocks → PAUL BUNYAN RURAL TELEPHONE COOP. 4814 OSAGE MN
2021-02-24 225-327 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E LUTCHER LA
2021-02-24 225-451 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E ZACHARY LA
2021-02-24 225-455 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E PLAQUEMINE LA
2021-02-24 225-488 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E ST GABRIEL LA
2021-02-24 225-533 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E VACHERIE LA
2021-02-24 332-244 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C NWYRCYZN01 NY
2021-02-24 351-217 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 GLOUCESTER MA
2021-02-24 385-390 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - UT 117F CLEARFIELD UT
2021-02-24 434-268 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J CROZET VA
2021-02-24 434-895 0–9 XXXall 10 · 4 holders which blocks → TWILIO INTERNATIONAL, INC. 506J LYNCHBURG VA
2021-02-24 470-764 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF GEORGIA, LLC - GA 909E CARROLLTON GA
2021-02-24 470-790 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF GEORGIA, LLC - GA 909E CARTERSVL GA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.