NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
2013-12-24 204-916 not yet reported which blocks → Provincial Tel Inc. 498E Neepawa —
2013-12-24 224-701 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E LAKE VILLA IL
2013-12-24 224-702 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E ZION IL
2013-12-24 254-496 not yet reported which blocks → AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX 0132 TURNERSVL TX
2013-12-24 254-596 not yet reported which blocks → AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX 0132 CRANFILSGP TX
2013-12-24 289-515 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Ancaster —
2013-12-24 289-516 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Cayuga —
2013-12-24 289-517 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Dundas —
2013-12-24 289-518 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Dunnville —
2013-12-24 289-520 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Hamilton —
2013-12-24 289-522 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Binbrook —
2013-12-24 480-738 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J PHOENIX AZ
2013-12-24 480-758 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2013-12-24 541-920 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OR 7442 VALE OR
2013-12-24 563-202 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DECORAH IA
2013-12-24 587-754 not yet reported which blocks → TELUS 8084 Edmonton —
2013-12-24 620-284 0XXX1XXX2XXX4XXX · 3 holders which blocks → UNITED STATES CELLULAR - KS 6267 COLUBSRURL KS
2013-12-24 814-907 0–9 XXXall 10 · 4 holders which blocks → WINDSTREAM D & E SYSTEMS, INC. - PA 4114 HUNTINGDON PA
2013-12-24 832-988 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 SUGAR LAND TX
2013-12-24 832-989 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 STAFFORD TX
2013-12-24 864-614 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 SENECA SC
2013-12-24 902-399 not yet reported which blocks → Bell Mobility Aliant 329A Halifax —
2013-12-24 912-214 0–9 XXXall 10 · 3 holders which blocks → GEORGIA WINDSTREAM, INC. 4425 LUDOWICI GA
2013-12-24 919-591 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K RAL DUR AP NC
2013-12-24 951-381 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E BANNING CA
2013-12-23 580-447 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 ADA OK
2013-12-23 725-400 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NV 029F LAS VEGAS NV
2013-12-23 725-666 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NV 029F LAS VEGAS NV
2013-12-23 725-888 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF NEVADA, LLC - NV 408F MTCHARLETN NV
2013-12-23 786-542 0–9 XXXall 10 · 4 holders which blocks → AT&T ENTERPRISES, LLC 516C MIAMI FL
2013-12-23 802-417 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VT 6390 RUTLAND VT
2013-12-23 832-745 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J CYPRESS TX
2013-12-23 832-783 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 HOUSTON TX
2013-12-23 910-427 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E ACME NC
2013-12-20 226-259 not yet reported which blocks → Fibernetics Corporation 464D Orangeville —
2013-12-20 289-523 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Caledonia —
2013-12-20 289-524 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Hagersville —
2013-12-20 289-525 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Mount Hope —
2013-12-20 289-526 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Stoney Creek —
2013-12-20 480-825 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-12-20 506-626 not yet reported which blocks → Bell Mobility Aliant 329A Miramichi —
2013-12-20 587-341 not yet reported which blocks → Bell Mobility 6574 Edmonton —
2013-12-20 807-356 not yet reported which blocks → Bell Mobility 6574 Thunder Bay —
2013-12-20 832-834 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2013-12-20 865-407 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TN 4806 KNOXVILLE TN
2013-12-19 253-213 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 TACOMA WA
2013-12-19 323-457 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LSAN DA 06 CA
2013-12-19 614-400 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 COLUMBUS OH
2013-12-19 620-281 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - KS 986E OSWEGO KS
2013-12-19 772-203 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 PTST LUCIE FL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.