NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
2020-07-21 959-345 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H DANIELSON CT
2020-07-21 959-356 0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H HADDAM CT
2020-07-21 959-529 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H HARTFORD CT
2020-07-21 959-946 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H STAFFD SPG CT
2020-07-20 249-389 not yet reported which blocks → Fibernetics Corporation 464D Bala —
2020-07-20 249-390 not yet reported which blocks → Fibernetics Corporation 464D Bracebridge —
2020-07-20 249-391 not yet reported which blocks → Fibernetics Corporation 464D Burk's Falls —
2020-07-20 249-392 not yet reported which blocks → Fibernetics Corporation 464D Dorset —
2020-07-20 249-393 not yet reported which blocks → Fibernetics Corporation 464D Mactier —
2020-07-20 365-870 not yet reported which blocks → ISP Telecom Inc. 4727 Caledon East —
2020-07-20 365-871 not yet reported which blocks → ISP Telecom Inc. 4727 Castlemore —
2020-07-20 365-872 not yet reported which blocks → ISP Telecom Inc. 4727 Snelgrove —
2020-07-20 672-985 not yet reported which blocks → TELUS Mobility 8301 Aldergrove —
2020-07-20 712-788 0XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H ORANGECITY IA
2020-07-20 712-877 6XXX7XXX · 2 holders which blocks → FRACTEL, LLC 965H HULL IA
2020-07-20 712-966 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H LE MARS IA
2020-07-20 712-977 0XXX1XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H MILFORD IA
2020-07-17 209-686 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ANGELSCAMP CA
2020-07-17 219-265 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VALPARAISO IN
2020-07-17 249-549 not yet reported which blocks → Fibernetics Corporation 464D Huntsville —
2020-07-17 249-649 not yet reported which blocks → Fibernetics Corporation 464D Midland —
2020-07-17 249-664 not yet reported which blocks → Fibernetics Corporation 464D Stroud —
2020-07-17 302-946 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H DELAWARECY DE
2020-07-17 352-677 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H BUSHNELL FL
2020-07-17 352-766 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H BELLEVIEW FL
2020-07-17 352-788 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H MICANOPY FL
2020-07-17 352-822 0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H BROOKER FL
2020-07-17 352-855 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H CHIEFLAND FL
2020-07-17 352-922 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H NEWBERRY FL
2020-07-17 365-367 not yet reported which blocks → Fibernetics Corporation 464D Niagara Falls —
2020-07-17 365-368 not yet reported which blocks → Fibernetics Corporation 464D Niagara-On-The-Lake —
2020-07-17 386-766 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H WELLBORN FL
2020-07-17 386-877 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H OAK HILL FL
2020-07-17 437-271 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-07-17 463-235 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SHELBYVL IN
2020-07-17 513-690 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 SEVEN MILE OH
2020-07-17 765-549 0XXX4XXX5XXX6XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F MONTEZUMA IN
2020-07-17 772-677 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H STUART FL
2020-07-17 779-699 0XXX1XXX6XXX7XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H SO BELOIT IL
2020-07-17 786-244 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H HOMESTEAD FL
2020-07-17 838-217 0–9 XXXall 10 · 5 holders which blocks → PEERING HUB, INC. - NY 818H ALBANY NY
2020-07-17 904-736 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MIDDLEBURG FL
2020-07-17 904-842 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H HILLIARD FL
2020-07-17 904-867 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → FRACTEL, LLC 965H JACKSOLBCH FL
2020-07-16 239-788 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H FORT MYERS FL
2020-07-16 240-226 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MD 876D OAKLAND MD
2020-07-16 240-851 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → ONVOY, LLC - MD 876D MCCOOLE MD
2020-07-16 269-500 0XXX1XXX2XXX4XXX5XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H HARTFORD MI
2020-07-16 302-991 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - DE 969E NEW CASTLE DE
2020-07-16 386-977 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H CRESCENTCY FL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.