NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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
2021-06-01 681-415 0XXX1XXX2XXX3XXX6XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F SISTERSVL WV
2021-06-01 782-918 not yet reported which blocks → Fibernetics Corporation 464D Chelsea —
2021-06-01 782-919 not yet reported which blocks → Fibernetics Corporation 464D Chester —
2021-06-01 782-920 not yet reported which blocks → Fibernetics Corporation 464D Cheverie —
2021-06-01 782-921 not yet reported which blocks → Fibernetics Corporation 464D Chezzetcook —
2021-06-01 782-922 not yet reported which blocks → Fibernetics Corporation 464D Clarksville —
2021-06-01 782-923 not yet reported which blocks → Fibernetics Corporation 464D Collingwood —
2021-06-01 782-924 not yet reported which blocks → Fibernetics Corporation 464D Debert —
2021-06-01 782-925 not yet reported which blocks → Fibernetics Corporation 464D Ecum Secum —
2021-06-01 782-926 not yet reported which blocks → Fibernetics Corporation 464D Elmsdale —
2021-06-01 782-927 not yet reported which blocks → Fibernetics Corporation 464D French Village —
2021-06-01 782-928 not yet reported which blocks → Fibernetics Corporation 464D Great Village —
2021-06-01 782-929 not yet reported which blocks → Fibernetics Corporation 464D Hantsport —
2021-06-01 782-930 not yet reported which blocks → Fibernetics Corporation 464D Hubbards —
2021-06-01 862-374 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 PASSAIC NJ
2021-06-01 910-856 0–9 XXXall 10 · 7 holders which blocks → ATLANTIC TELECOM MULTIMEDIA CONSOLIDATED, LLC - NC 452G FAIRMONT NC
2021-06-01 910-942 0XXX1XXX2XXX4XXX6XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WRGHTSVBCH NC
2021-05-31 782-912 not yet reported which blocks → Fibernetics Corporation 464D Advocate —
2021-05-31 782-913 not yet reported which blocks → Fibernetics Corporation 464D Bass River —
2021-05-31 782-914 not yet reported which blocks → Fibernetics Corporation 464D Blandford —
2021-05-31 782-915 not yet reported which blocks → Fibernetics Corporation 464D Brookfield —
2021-05-31 782-916 not yet reported which blocks → Fibernetics Corporation 464D Brooklyn —
2021-05-31 782-917 not yet reported which blocks → Fibernetics Corporation 464D Caledonia —
2021-05-28 302-802 0–9 XXXall 10 · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H SMYRNA DE
2021-05-28 447-743 0XXX1XXX2XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SPRINGFLD IL
2021-05-28 447-867 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 7 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WESTVILLE IL
2021-05-28 470-814 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2021-05-28 608-895 0–9 XXXall 10 · 3 holders which blocks → TWILIO INTERNATIONAL, INC. 506J MADISON WI
2021-05-28 626-621 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E AZUSA CA
2021-05-28 672-645 not yet reported which blocks → CityWest Cable (North) Corp - BC 705F Vanderhoof —
2021-05-28 737-357 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H LOCKHART TX
2021-05-28 737-375 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H ROCKDALE TX
2021-05-27 262-462 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H BRISTOL WI
2021-05-27 262-562 0XXX2XXX3XXX4XXX5XXX6XXX9XXX · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H GENOA CITY WI
2021-05-27 413-405 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H SPRINGFLD MA
2021-05-27 417-706 0XXX1XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → STRATUS NETWORKS 495J JOPLIN MO
2021-05-27 458-266 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 LEBANON OR
2021-05-27 480-791 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-05-27 484-943 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 BIRDSBORO PA
2021-05-27 551-320 0–9 XXXall 10 · 4 holders which blocks → CABLEVISION LIGHTPATH, INC. - NJ 4948 RUTHERFORD NJ
2021-05-27 602-815 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-05-27 641-282 2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHADAMS IA
2021-05-27 657-496 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2021-05-27 667-656 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H EDGEWOOD MD
2021-05-27 715-740 0XXX7XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H BOWLER WI
2021-05-27 720-850 0–9 XXXall 10 · 3 holders which blocks → FIVE9, INC. 598J DENVER CO
2021-05-27 727-283 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 CLEARWATER FL
2021-05-27 765-616 0XXX1XXX6XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F MIDDLETOWN IN
2021-05-27 830-398 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H BANDERA TX
2021-05-27 830-638 0–9 XXXall 10 · 7 holders which blocks → ONVOY SPECTRUM, LLC 624H BATESVILLE TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.