NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

349 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
2022-02-15 361-466 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 7 holders which blocks → TON80 COMMUNICATIONS, LLC 516J KINGSVILLE TX
2022-02-15 361-863 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PORTLDGGRY TX
2022-02-15 409-327 0XXX7XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LA BELLE TX
2022-02-15 430-295 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 GREENVILLE TX
2022-02-15 430-296 1XXX2XXX3XXX4XXX · 3 holders which blocks → CSC VOICE, LLC 612K BAGWELL TX
2022-02-15 437-423 not yet reported which blocks → Bell Mobility 6574 Toronto —
2022-02-15 437-519 not yet reported which blocks → Bell Mobility 6574 Toronto —
2022-02-15 437-649 not yet reported which blocks → Bell Mobility 6574 Toronto —
2022-02-15 437-961 not yet reported which blocks → Bell Mobility 6574 Toronto —
2022-02-15 438-596 not yet reported which blocks → Bell Mobility 6574 Montreal —
2022-02-15 458-624 5XXX7XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NO POWDER OR
2022-02-15 458-687 1XXX7XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MORO OR
2022-02-15 458-726 5XXX7XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MONUMENT OR
2022-02-15 458-742 1XXX6XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NO HARNEY OR
2022-02-15 501-782 7XXX which blocks → TON80 COMMUNICATIONS, LLC 516J GRIFFITHVL AR
2022-02-15 501-942 0XXX1XXX2XXX3XXX4XXX6XXX7XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SCOTT AR
2022-02-15 585-832 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HENRIETTA NY
2022-02-15 662-943 3XXX which blocks → TON80 COMMUNICATIONS, LLC 516J MERIGOLD MS
2022-02-15 662-992 0XXX6XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SHELBY MS
2022-02-15 680-242 0–9 XXXall 10 · 6 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J LIVERPOOL NY
2022-02-15 689-275 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 WINTERPARK FL
2022-02-15 689-799 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H WINTERPARK FL
2022-02-15 716-742 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LOCKPORT NY
2022-02-15 727-355 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 NWPTRICHEY FL
2022-02-15 765-895 8XXX which blocks → TWILIO INTERNATIONAL, INC. 506J RICHMOND IN
2022-02-15 839-273 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NO AUGUSTA SC
2022-02-15 839-466 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WINNSBORO SC
2022-02-15 839-746 0–9 XXXall 10 · 7 holders which blocks → TON80 COMMUNICATIONS, LLC 516J AIKEN SC
2022-02-15 856-636 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J VINELAND NJ
2022-02-15 856-654 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HADDONFLD NJ
2022-02-15 856-684 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WOODBURY NJ
2022-02-15 857-639 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CAMBRIDGE MA
2022-02-15 857-693 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ROXBURY MA
2022-02-15 863-374 0XXX1XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ZOLFO SPG FL
2022-02-15 929-909 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NWYRCYZN04 NY
2022-02-15 929-969 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H NWYRCYZN07 NY
2022-02-15 929-979 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H NWYRCYZN10 NY
2022-02-15 929-991 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H NWYRCYZN12 NY
2022-02-15 930-893 8XXX which blocks → TWILIO INTERNATIONAL, INC. 506J TERREHAUTE IN
2022-02-14 231-413 0XXX1XXX8XXX9XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 KALKASKA MI
2022-02-14 236-449 not yet reported which blocks → Bell Mobility 6574 Vancouver —
2022-02-14 253-354 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TACOMA WA
2022-02-14 272-426 4XXX5XXX6XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NUREMBERG PA
2022-02-14 409-301 1XXX which blocks → TWC IP ENABLED SERVICES, LLC 793K NOME TX
2022-02-14 424-867 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H CMTN CMTN CA
2022-02-14 434-742 0XXX1XXX6XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LOVINGSTON VA
2022-02-14 437-287 not yet reported which blocks → Bell Mobility 6574 Toronto —
2022-02-14 437-399 not yet reported which blocks → Bell Mobility 6574 Toronto —
2022-02-14 438-465 not yet reported which blocks → Bell Mobility 6574 Montreal —
2022-02-14 438-650 not yet reported which blocks → Bell Mobility 6574 Montreal —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.