NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

337 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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 25
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 12
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
2021-11-09 352-739 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 BUSHNELL FL
2021-11-09 352-769 0–9 XXXall 10 · 6 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 DADE CITY FL
2021-11-09 413-456 6XXX7XXX which blocks → ONVOY, LLC - MA 892D SOUTHWICK MA
2021-11-09 431-946 not yet reported which blocks → Bell Mobility 6574 Winnipeg —
2021-11-09 440-768 0–9 XXXall 10 · 5 holders which blocks → AT&T - LOCAL 7421 WILLOUGHBY OH
2021-11-09 458-277 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → T-MOBILE USA, INC. 6529 NEWPORT OR
2021-11-09 458-278 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 ALBANY OR
2021-11-09 463-260 0XXX1XXX9XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FAIRLAND IN
2021-11-09 464-200 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H LANSING IL
2021-11-09 464-300 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H CICERO IL
2021-11-09 464-400 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BELLWOOD IL
2021-11-09 484-980 0XXX1XXX · 2 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J BIRDSBORO PA
2021-11-09 501-491 0–9 XXXall 10 · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - AR 196F BEEBE AR
2021-11-09 508-290 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E NORTHBORO MA
2021-11-09 513-935 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F BETHANY OH
2021-11-09 548-312 not yet reported which blocks → ISP Telecom Inc. 4727 New Hamburg —
2021-11-09 548-332 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Windsor —
2021-11-09 657-551 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 WESTMINSTR CA
2021-11-09 659-252 0–9 XXXall 10 · 7 holders which blocks → ONVOY SPECTRUM, LLC 624H CLANTON AL
2021-11-09 681-469 0XXX6XXX7XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F SHINNSTON WV
2021-11-09 716-554 0XXX2XXX4XXX5XXX6XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H RANDOLPH NY
2021-11-09 771-888 0–9 XXXall 10 · 6 holders which blocks → WIDE VOICE, LLC - DC 538H WSHNGTNZN1 DC
2021-11-09 782-556 not yet reported which blocks → Bell Mobility Aliant 329A Charlottetown —
2021-11-09 825-473 not yet reported which blocks → ISP Telecom Inc. 4727 Taber —
2021-11-09 928-933 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H PINETOP AZ
2021-11-09 951-597 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 CORONA CA
2021-11-09 970-896 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 STEAMBOSPG CO
2021-11-09 971-418 0XXX1XXX2XXX5XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F WARRENTON OR
2021-11-09 971-419 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CLACKAMAS OR
2021-11-08 249-297 not yet reported which blocks → ISP Telecom Inc. 4727 Warkworth —
2021-11-08 249-298 not yet reported which blocks → ISP Telecom Inc. 4727 Havelock —
2021-11-08 309-906 5XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WOODHULL IL
2021-11-08 314-907 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LADUE MO
2021-11-08 314-936 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - MO 093F CREVECOEUR MO
2021-11-08 343-210 not yet reported which blocks → ISP Telecom Inc. 4727 Clarence Creek —
2021-11-08 343-759 not yet reported which blocks → ISP Telecom Inc. 4727 Embrun —
2021-11-08 516-928 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN08 NY
2021-11-08 561-769 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOYNTONBCH FL
2021-11-08 561-782 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C WPALMBEACH FL
2021-11-08 561-783 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C BELLEGLADE FL
2021-11-08 567-366 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PT CLINTON OH
2021-11-08 607-412 2XXX6XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H LOCKWOOD NY
2021-11-08 607-446 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 CHENANGBDG NY
2021-11-08 659-251 0–9 XXXall 10 · 6 holders which blocks → AIRUS, INC. - AL 476H TUSCALOOSA AL
2021-11-08 680-236 2XXX3XXX6XXX9XXX · 3 holders which blocks → ONVOY, LLC- NY 384C BARNEVELD NY
2021-11-08 769-275 0–9 XXXall 10 · 2 holders which blocks → CELLULAR SOUTH, INC. 6581 JACKSON MS
2021-11-08 771-777 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H WSHNGTNZN1 DC
2021-11-08 786-834 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 NORTH DADE FL
2021-11-08 786-835 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MIAMI FL
2021-11-08 786-836 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.