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
2021-03-02 979-386 0XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H WEIMAR TX
2021-03-02 979-786 0XXX2XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → FRACTEL, LLC 965H SOMERVILLE TX
2021-03-01 207-308 0XXX9XXX · 2 holders which blocks → PEERLESS NETWORK OF MAINE, LLC- ME 925H BELGRADE ME
2021-03-01 207-309 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF MAINE, LLC- ME 925H GARDINER ME
2021-03-01 210-964 0–9 XXXwhole prefix which blocks → ONVOY, LLC - TX 903C SANANTONIO TX
2021-03-01 210-985 0–9 XXXwhole prefix which blocks → ONVOY, LLC - TX 903C SANANTONIO TX
2021-03-01 218-882 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MN 184D CARLTON MN
2021-03-01 231-284 0–9 XXXall 10 · 7 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 MANISTEE MI
2021-03-01 249-552 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Moonstone —
2021-03-01 256-869 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CULLMAN AL
2021-03-01 269-284 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 HASTINGS MI
2021-03-01 442-799 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H TWNTYNPLMS CA
2021-03-01 581-914 not yet reported which blocks → TELUS Quebec 8083 Riviere-au-Renard —
2021-03-01 581-915 not yet reported which blocks → TELUS Quebec 8083 Sainte-Anne-des-Monts —
2021-03-01 581-916 not yet reported which blocks → TELUS Quebec 8083 Forestville —
2021-03-01 619-914 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E HARBSNALPN CA
2021-03-01 989-371 0XXX1XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 HARRISON MI
2021-02-28 267-946 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PHLDLPHZN1 PA
2021-02-28 307-667 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - WY 450F RAWLINS WY
2021-02-28 308-317 1XXX3XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BROADWATER NE
2021-02-28 308-376 1XXX2XXX6XXX7XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OSHKOSH NE
2021-02-28 470-796 0–9 XXXall 10 · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA NE GA
2021-02-28 470-803 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H ATLANTA NW GA
2021-02-28 470-804 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D BOGARTSTHM GA
2021-02-28 475-278 0–9 XXXall 10 · 3 holders which blocks → CABLEVISION LIGHTPATH, INC. - CT 4950 GREENWICH CT
2021-02-28 502-516 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - KY 896E LA GRANGE KY
2021-02-28 619-897 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CHULAVISTA CA
2021-02-28 626-558 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
2021-02-28 734-510 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2021-02-28 762-286 0–9 XXXall 10 · 6 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 CLEVELAND GA
2021-02-28 762-290 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 GREENSBORO GA
2021-02-28 928-610 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AZ 630E BULLHEADCY AZ
2021-02-26 223-377 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H WARFORDSBG PA
2021-02-26 223-388 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BIGLERVL PA
2021-02-26 223-399 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H EASTBERLIN PA
2021-02-26 252-420 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENVILLE NC
2021-02-26 386-732 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NWSMYRNBCH FL
2021-02-26 437-642 not yet reported which blocks → Bell Mobility 6574 Toronto —
2021-02-26 437-643 not yet reported which blocks → Bell Mobility 6574 Toronto —
2021-02-26 480-805 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2021-02-26 539-241 2XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - OK 5257 CHOUTEAU OK
2021-02-26 579-834 not yet reported which blocks → TELUS Quebec 2243 Ste-Justine-de-Newton —
2021-02-26 579-835 not yet reported which blocks → TELUS Quebec 2243 St-Marc —
2021-02-26 579-836 not yet reported which blocks → TELUS Quebec 2243 St-Pie-de-Guire —
2021-02-26 579-837 not yet reported which blocks → TELUS Quebec 2243 St-Polycarpe —
2021-02-26 579-850 not yet reported which blocks → TELUS Quebec 2243 Waterloo —
2021-02-26 659-221 0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → ONVOY, LLC - AL 604E CARBONHILL AL
2021-02-26 659-223 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → HARGRAY OF ALABAMA, INC. - AL 432J LEEDS AL
2021-02-26 689-808 0–9 XXXall 10 · 2 holders which blocks → TWILIO INTERNATIONAL, INC. 506J ORLANDO FL
2021-02-26 727-788 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NWPTRICHEY FL

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.