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
2022-02-03 839-216 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 AIKEN SC
2022-02-03 839-832 0XXX1XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SANTEE SC
2022-02-03 848-363 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MONMTH JCT NJ
2022-02-03 862-746 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LIVINGSTON NJ
2022-02-03 864-667 0XXX1XXX2XXX3XXX6XXX7XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MOUNTVILLE SC
2022-02-03 870-849 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 HARRISON AR
2022-02-03 930-261 9XXX which blocks → BOOST SUBSCRIBERCO L.L.C. 490J TERREHAUTE IN
2022-02-03 986-742 6XXX which blocks → TON80 COMMUNICATIONS, LLC 516J MINIDOKA ID
2022-02-02 272-437 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NEWFOUNDLD PA
2022-02-02 272-463 4XXX5XXX6XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NICHOLSON PA
2022-02-02 325-352 0–9 XXXall 10 · 4 holders which blocks → TWILIO INTERNATIONAL, INC. 506J ABILENE TX
2022-02-02 364-219 0XXX1XXX7XXX8XXX9XXX · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J BOWLNGGREN KY
2022-02-02 432-895 0–9 XXXall 10 · 3 holders which blocks → TWILIO INTERNATIONAL, INC. 506J MIDLAND TX
2022-02-02 575-463 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LAS CRUCES NM
2022-02-02 657-565 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SANTA ANA CA
2022-02-02 669-690 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H SNJS NORTH CA
2022-02-02 737-318 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 BASTROP TX
2022-02-02 762-746 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J COLUMBUS GA
2022-02-02 774-832 0XXX1XXX4XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MEDWAY MA
2022-02-02 828-660 0XXX1XXX4XXX8XXX9XXX · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J ASHEVILLE NC
2022-02-02 839-876 0XXX1XXX3XXX6XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PROSPERITY SC
2022-02-02 930-390 3XXX which blocks → TWILIO INTERNATIONAL, INC. 506J BLOOMINGTN IN
2022-02-02 979-895 2XXX3XXX4XXX8XXX · 2 holders which blocks → TWILIO INTERNATIONAL, INC. 506J BRYAN TX
2022-02-01 272-662 0XXX1XXX2XXX5XXX6XXX8XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NESQUHONNG PA
2022-02-01 276-653 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PENINGTNGP VA
2022-02-01 332-259 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
2022-02-01 339-837 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J RANDOLPH MA
2022-02-01 346-822 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H HSTNSUBURB TX
2022-02-01 346-833 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H HOUSTON TX
2022-02-01 352-743 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ORANGE SPG FL
2022-02-01 365-734 not yet reported which blocks → Iristel Inc. 154E Thornhill —
2022-02-01 365-847 not yet reported which blocks → Bell Canada 8051 Snelgrove —
2022-02-01 385-874 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J FARMINGTON UT
2022-02-01 423-796 0–9 XXXall 10 · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J JOHNSON CY TN
2022-02-01 434-342 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHASE CITY VA
2022-02-01 440-814 0XXX6XXX9XXX · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J PERRY OH
2022-02-01 440-819 0XXX1XXX2XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C OLMSTEDFLS OH
2022-02-01 445-622 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PHPHSBZN32 PA
2022-02-01 458-646 0XXX2XXX4XXX6XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CASCADELKS OR
2022-02-01 458-723 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BURNS OR
2022-02-01 464-768 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHICAGOHTS IL
2022-02-01 478-212 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 DUBLIN GA
2022-02-01 479-625 0XXX2XXX5XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LONDON AR
2022-02-01 479-663 3XXX6XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PARIS AR
2022-02-01 480-851 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2022-02-01 505-525 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALBUQURQUE NM
2022-02-01 531-273 0XXX1XXX2XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NE 995E DE WITT NE
2022-02-01 531-298 0XXX1XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - NE 995E DORCHESTER NE
2022-02-01 534-626 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WAUSAU WI
2022-02-01 548-761 not yet reported which blocks → Iristel Inc. 154E Guelph —

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.