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
2021-01-27 747-788 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H VAN NUYS CA
2021-01-27 774-457 0XXX1XXX4XXX5XXX7XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 MILLBURY MA
2021-01-27 785-496 0–9 XXXall 10 · 5 holders which blocks → STRATUS NETWORKS 495J TOPEKA KS
2021-01-27 820-288 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H VNTRA EAST CA
2021-01-27 820-299 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CAMARILLO CA
2021-01-27 828-567 0–9 XXXall 10 · 3 holders which blocks → STRATUS NETWORKS 495J ARDEN NC
2021-01-27 828-920 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NC 638E ASHEVILLE NC
2021-01-27 848-328 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NJ 637C CARTERET NJ
2021-01-27 848-748 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NJ 637C MONMTH JCT NJ
2021-01-27 848-828 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NJ 637C LONGBRANCH NJ
2021-01-27 858-399 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CORONADO CA
2021-01-27 859-452 0–9 XXXall 10 · 6 holders which blocks → IP HORIZON LLC 515J RICHMOND KY
2021-01-27 910-940 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NC 638E WILMINGTON NC
2021-01-27 914-913 1XXX2XXX3XXX4XXX9XXX · 4 holders which blocks → ONVOY, LLC- NY 384C POUNDRIDGE NY
2021-01-27 914-916 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H WSCHSTZN04 NY
2021-01-27 917-277 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC- NY 384C NWYRCYZN04 NY
2021-01-27 917-672 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC- NY 384C NWYRCYZN06 NY
2021-01-27 917-764 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC- NY 384C NWYRCYZN07 NY
2021-01-27 925-599 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H LIVERMORE CA
2021-01-27 929-564 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN04 NY
2021-01-27 929-567 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C NWYRCYZN06 NY
2021-01-27 929-568 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H NWYRCYZN07 NY
2021-01-27 929-571 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN12 NY
2021-01-27 937-792 4XXX6XXX7XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H WEST UNION OH
2021-01-27 971-392 0–9 XXXall 10 · 2 holders which blocks → STRATUS NETWORKS 495J BEAVERTON OR
2021-01-27 979-788 0XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → FRACTEL, LLC 965H DIME BOX TX
2021-01-27 980-920 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NC 638E CHARLOTTE NC
2021-01-27 984-278 0–9 XXXall 10 · 5 holders which blocks → STRATUS NETWORKS 495J DURHAM NC
2021-01-27 984-920 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NC 638E RALEIGH NC
2021-01-26 321-588 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H COCOA FL
2021-01-26 321-599 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H EAU GALLIE FL
2021-01-26 386-293 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E DAYTONABCH FL
2021-01-26 430-280 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 GREENVILLE TX
2021-01-26 435-303 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 BEARRIV CY UT
2021-01-26 437-210 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2021-01-26 437-679 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2021-01-26 478-226 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - GA 067D GRAY GA
2021-01-26 478-266 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - GA 067D IRWINTON GA
2021-01-26 478-276 0–9 XXXwhole prefix which blocks → ONVOY, LLC - GA 067D MONTEZUMA GA
2021-01-26 478-306 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - GA 067D MONTROSE GA
2021-01-26 478-369 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D CENTERVL GA
2021-01-26 478-386 7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - GA 067D TOOMSBORO GA
2021-01-26 478-699 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - GA 067D BYRON GA
2021-01-26 551-351 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H CRAGMERE NJ
2021-01-26 551-355 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NJ 637C ENGLEWOOD NJ
2021-01-26 551-455 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NJ 637C FAIR LAWN NJ
2021-01-26 551-651 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - NJ 637C OAKLAND NJ
2021-01-26 551-751 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NJ 637C WESTWOOD NJ
2021-01-26 551-815 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NJ 637C RIDGEWOOD NJ
2021-01-26 581-974 not yet reported which blocks → SSi Micro Ltd. 940G Chibougamau —

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.