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
2021-11-16 251-374 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H MOBILE AL
2021-11-16 346-902 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H DICKINSON TX
2021-11-16 386-340 0–9 XXXall 10 · 2 holders which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 ALACHUA FL
2021-11-16 424-902 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H SNMN SNMN CA
2021-11-16 458-901 0XXX2XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H COOS BAY OR
2021-11-16 470-883 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2021-11-16 506-254 not yet reported which blocks → TELUS Mobility 8303 Bathurst —
2021-11-16 579-399 not yet reported which blocks → IXICA Communications Inc. 812H Chomedey —
2021-11-16 579-577 not yet reported which blocks → IXICA Communications Inc. 812H St-Vincent-de-Paul —
2021-11-16 579-590 not yet reported which blocks → IXICA Communications Inc. 812H Ste-Rose —
2021-11-16 579-599 not yet reported which blocks → IXICA Communications Inc. 812H Laval-Est —
2021-11-16 579-699 not yet reported which blocks → IXICA Communications Inc. 812H Laval-Ouest —
2021-11-16 626-901 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H COVINA CA
2021-11-16 640-218 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F DENNISVL NJ
2021-11-16 662-530 0XXX1XXX9XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - MS 992E SHANNON MS
2021-11-16 680-322 0–9 XXXall 10 · 3 holders which blocks → TERRA NOVA TELECOM INC. 145J SYRACUSE NY
2021-11-16 680-901 9XXX which blocks → ONVOY SPECTRUM, LLC 624H DE RUYTER NY
2021-11-16 727-454 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 CLEARWATER FL
2021-11-16 742-988 not yet reported which blocks → TELUS Mobility 8303 Ajax-Pickering —
2021-11-16 754-276 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FTLAUDERDL FL
2021-11-16 754-279 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H FTLAUDERDL FL
2021-11-16 765-699 0XXX9XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F CHESTERFLD IN
2021-11-16 765-704 0XXX2XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F BUNKERHILL IN
2021-11-16 765-709 0XXX1XXX3XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F ATTICA IN
2021-11-16 769-277 0XXX1XXX6XXX7XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MS 992E MAGNOLIA MS
2021-11-16 774-496 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BROCKTON MA
2021-11-16 845-488 0XXX1XXX2XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NORTHCLOVE NY
2021-11-16 845-879 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SPRING VLY NY
2021-11-16 845-886 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E HIGH FALLS NY
2021-11-16 854-225 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F ST GEORGE SC
2021-11-16 856-523 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F SALEM NJ
2021-11-16 873-884 not yet reported which blocks → IXICA Communications Inc. 812H Sherbrooke —
2021-11-16 873-910 not yet reported which blocks → IXICA Communications Inc. 812H Asbestos —
2021-11-16 873-920 not yet reported which blocks → IXICA Communications Inc. 812H Lac-Megantic —
2021-11-16 873-930 not yet reported which blocks → IXICA Communications Inc. 812H Sawyerville —
2021-11-16 873-940 not yet reported which blocks → IXICA Communications Inc. 812H St-Sebastien (Frontenac Co.) —
2021-11-16 873-960 not yet reported which blocks → IXICA Communications Inc. 812H St-Adolphe-de-Dudswell —
2021-11-16 873-970 not yet reported which blocks → IXICA Communications Inc. 812H St-Malo —
2021-11-16 909-848 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 REDLANDS CA
2021-11-16 939-331 0–9 XXXwhole prefix which blocks → SUNCOM DBA T-MOBILE USA 8645 MANATI PR
2021-11-16 956-649 0–9 XXXall 10 · 2 holders which blocks → STPCS JOINT VENTURE, LLC 4290 LAREDO TX
2021-11-16 980-351 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E CLEVELAND NC
2021-11-16 980-372 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E STANLEY NC
2021-11-16 980-383 0–9 XXXall 10 · 3 holders which blocks → TELIAX, INC. 668J CHARLOTTE NC
2021-11-15 213-642 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2021-11-15 213-648 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 01 CA
2021-11-15 256-942 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ROGERSVL AL
2021-11-15 442-379 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 EL CENTRO CA
2021-11-15 458-279 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F FLORENCE OR
2021-11-15 539-263 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OK 119F HENRYETTA OK

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.