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
2022-01-19 365-640 not yet reported which blocks → Beanfield Technologies Inc. 575G Queensville —
2022-01-19 365-641 not yet reported which blocks → Beanfield Technologies Inc. 575G Schomberg —
2022-01-19 365-642 not yet reported which blocks → Beanfield Technologies Inc. 575G Stouffville —
2022-01-19 458-902 8XXX9XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H COVE OR
2022-01-19 463-265 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FRANKLIN IN
2022-01-19 479-486 0XXX1XXX2XXX9XXX · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J PEA RIDGE AR
2022-01-19 548-918 not yet reported which blocks → Iristel Inc. 154E Leamington —
2022-01-19 581-893 not yet reported which blocks → Iristel Inc. 154E Chandler —
2022-01-19 612-484 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2022-01-19 619-984 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2022-01-19 639-704 not yet reported which blocks → Iristel Inc. 154E Saskatoon —
2022-01-19 657-652 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ANAHEIM CA
2022-01-19 680-239 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MASSENA NY
2022-01-19 682-373 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ARLINGTON TX
2022-01-19 682-374 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ARLINGTON TX
2022-01-19 682-376 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ARLINGTON TX
2022-01-19 682-377 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ARLINGTON TX
2022-01-19 709-301 not yet reported which blocks → Iristel Inc. 154E Bonavista —
2022-01-19 765-784 0XXX2XXX3XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J W LEBANON IN
2022-01-19 765-843 0XXX1XXX2XXX3XXX6XXX7XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WAYNETOWN IN
2022-01-19 765-974 2XXX4XXX7XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WALDRON IN
2022-01-19 774-506 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BROCKTON MA
2022-01-19 806-814 0XXX1XXX7XXX8XXX9XXX which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F AMARILLO TX
2022-01-19 858-665 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LA JOLLA CA
2022-01-19 858-687 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J POWAY CA
2022-01-19 904-776 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 JACKSONVL FL
2022-01-19 929-613 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN04 NY
2022-01-19 929-614 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN09 NY
2022-01-19 929-615 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN10 NY
2022-01-19 929-617 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN06 NY
2022-01-19 929-618 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN05 NY
2022-01-19 937-820 0–9 XXXall 10 · 8 holders which blocks → T-MOBILE USA, INC. 6529 HILLSBORO OH
2022-01-19 945-240 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 MIDLOTHIAN TX
2022-01-19 945-241 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 FRISCO TX
2022-01-19 956-672 0–9 XXXall 10 · 4 holders which blocks → STPCS JOINT VENTURE, LLC 4290 MISSION TX
2022-01-19 984-768 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J FUQUAYVRIN NC
2022-01-19 985-378 0XXX1XXX6XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MADISONVL LA
2022-01-19 985-462 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ANGIE LA
2022-01-18 223-466 0XXX1XXX3XXX4XXX5XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MT GRETNA PA
2022-01-18 223-883 0XXX1XXX3XXX6XXX7XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MILLERSTN PA
2022-01-18 279-675 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J RSVL MAIN CA
2022-01-18 343-902 not yet reported which blocks → ISP Telecom Inc. 4727 Richmond —
2022-01-18 346-544 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 CYPRESS TX
2022-01-18 430-290 0–9 XXXall 10 · 7 holders which blocks → T-MOBILE USA, INC. 6529 DETROIT TX
2022-01-18 430-291 0XXX3XXX4XXX5XXX6XXX7XXX9XXX which blocks → T-MOBILE USA, INC. 6529 TEXARKANA TX
2022-01-18 475-463 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SEYMOUR CT
2022-01-18 475-763 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NAUGATUCK CT
2022-01-18 520-627 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 TUCSON AZ
2022-01-18 539-276 0XXX2XXX7XXX9XXX · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J CEDARS OK
2022-01-18 548-392 not yet reported which blocks → ISP Telecom Inc. 4727 Alvinston —

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.