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
2022-01-20 413-476 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E SHEFFIELD MA
2022-01-20 414-317 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2022-01-20 423-932 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ETOWAH TN
2022-01-20 430-437 0–9 XXXall 10 · 5 holders which blocks → TWILIO INTERNATIONAL, INC. 506J TYLER TX
2022-01-20 438-369 not yet reported which blocks → Videotron Ltd. 328F Montreal —
2022-01-20 438-370 not yet reported which blocks → Videotron Ltd. 328F Montreal —
2022-01-20 438-371 not yet reported which blocks → Videotron Ltd. 328F Montreal —
2022-01-20 458-284 0XXX1XXX5XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F HARRISBURG OR
2022-01-20 463-267 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 INDIANAPLS IN
2022-01-20 504-395 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F VENICE LA
2022-01-20 548-906 not yet reported which blocks → Iristel Inc. 154E Essex —
2022-01-20 639-812 not yet reported which blocks → Iristel Inc. 154E Biggar —
2022-01-20 656-200 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2022-01-20 656-203 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2022-01-20 656-204 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2022-01-20 656-347 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C TAMPAEST FL
2022-01-20 681-370 0XXX which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F RIVESVILLE WV
2022-01-20 681-420 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F JANE LEW WV
2022-01-20 681-440 0XXX which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F FARMINGTON WV
2022-01-20 689-271 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 KISSIMMEE FL
2022-01-20 689-732 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H WKISSIMMEE FL
2022-01-20 719-732 0XXX1XXX2XXX3XXX4XXX7XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHEYENWLLS CO
2022-01-20 726-223 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C SANANTONIO TX
2022-01-20 727-354 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 NWPTRICHEY FL
2022-01-20 762-328 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J AUGUSTA GA
2022-01-20 763-346 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2022-01-20 806-876 8XXX which blocks → TWILIO INTERNATIONAL, INC. 506J AMARILLO TX
2022-01-20 825-745 not yet reported which blocks → Iristel Inc. 154E Medicine Hat —
2022-01-20 828-596 0XXX1XXX2XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 BLACK MT NC
2022-01-20 863-320 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E WINTER HVN FL
2022-01-20 863-329 0–9 XXXall 10 · 6 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 LAKELAND FL
2022-01-20 864-536 0XXX7XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F ANTIOCH SC
2022-01-20 865-626 0XXX1XXX2XXX6XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHESTNUTHI TN
2022-01-20 865-822 0XXX1XXX2XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J OLIVER SPG TN
2022-01-20 865-962 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CLAXTON TN
2022-01-20 873-306 not yet reported which blocks → Iristel Inc. 154E Victoriaville —
2022-01-20 878-732 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PTGSBNZN19 PA
2022-01-20 901-660 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F LAGRANGE TN
2022-01-20 904-792 0–9 XXXall 10 · 3 holders which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 ST JOHNS FL
2022-01-20 904-884 0–9 XXXall 10 · 2 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G MACCLENNY FL
2022-01-20 910-931 0XXX1XXX2XXX4XXX7XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 SOUTHPORT NC
2022-01-20 930-257 0XXX2XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F CLEARSPRNG IN
2022-01-20 941-288 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 PTCHARLOTT FL
2022-01-20 971-423 0XXX2XXX3XXX · 3 holders which blocks → TWILIO INTERNATIONAL, INC. 506J YAMHILL OR
2022-01-20 984-746 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CREEDMOOR NC
2022-01-20 985-403 0–9 XXXall 10 · 4 holders which blocks → VOICESTREAM GSM I, LLC 150C HAMMOND LA
2022-01-19 236-315 not yet reported which blocks → Iristel Inc. 154E Vancouver —
2022-01-19 251-520 0–9 XXXall 10 · 3 holders which blocks → COMMIO, LLC 939H MOBILE AL
2022-01-19 334-990 0–9 XXXall 10 · 2 holders which blocks → COMMIO, LLC 939H MONTGOMERY AL
2022-01-19 346-545 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 RICHMNRNBG TX

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.