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
2012-01-30 606-559 0XXX1XXX2XXX3XXX4XXX5XXX · 2 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 BURNSIDE KY
2012-01-30 606-715 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 TOLLESBORO KY
2012-01-30 606-721 0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LONDON 9691 WASHINGTON KY
2012-01-30 606-737 0XXX4XXX · 2 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 ASHLAND KY
2012-01-30 606-750 1XXX2XXX3XXX4XXX6XXX · 4 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 GREENUP KY
2012-01-30 606-819 0XXX1XXX4XXX6XXX8XXX · 4 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 OWINGSVL KY
2012-01-30 606-895 4XXX which blocks → WINDSTREAM KENTUCKY EAST, INC. - LONDON 9691 IRVINE KY
2012-01-30 623-419 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2012-01-30 716-356 0–9 XXXall 10 · 7 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K RANDOLPH NY
2012-01-30 760-800 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 TWNTYNPLMS CA
2012-01-30 810-447 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E FLINT MI
2012-01-30 859-458 0XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 LANCASTER KY
2012-01-30 859-682 0–9 XXXall 10 · 4 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 VERSAILLES KY
2012-01-30 859-724 0–9 XXXall 10 · 5 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 NICHOLASVL KY
2012-01-30 909-353 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E REDLANDS CA
2012-01-30 913-202 0–9 XXXall 10 · 7 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 KANSASCITY KS
2012-01-30 913-210 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - KS 2240 OLATHE KS
2012-01-27 240-707 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HAGERSTOWN MD
2012-01-27 240-803 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CUMBERLAND MD
2012-01-27 404-426 0–9 XXXall 10 · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2012-01-27 404-637 0–9 XXXall 10 · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2012-01-27 410-934 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ANNAPOLIS MD
2012-01-27 443-240 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BALTIMORE MD
2012-01-27 614-636 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F COLUMBUS OH
2012-01-27 631-459 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2012-01-27 646-569 0–9 XXXall 10 · 3 holders which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 NWYRCYZN01 NY
2012-01-27 646-581 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
2012-01-27 917-426 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NWYRCYZN14 NY
2012-01-27 919-615 0–9 XXXall 10 · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 RALEIGH NC
2012-01-27 919-947 0–9 XXXall 10 · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 GOLDSBORO NC
2012-01-27 925-421 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CONCORD CA
2012-01-27 929-232 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN12 NY
2012-01-27 936-206 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F CONROE TX
2012-01-26 207-412 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K ELLSWORTH ME
2012-01-26 226-350 not yet reported which blocks → TELUS Mobility 8303 Windsor —
2012-01-26 302-212 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 REHOBOTH DE
2012-01-26 343-264 not yet reported which blocks → TELUS Mobility 8303 Brockville —
2012-01-26 407-308 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E ORLANDO FL
2012-01-26 469-309 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAXAHACHIE TX
2012-01-26 581-320 not yet reported which blocks → Videotron Ltd. 8306 Sault-au-Mouton —
2012-01-26 581-322 not yet reported which blocks → Videotron Ltd. 8306 Les Escoumins —
2012-01-26 587-646 not yet reported which blocks → TELUS Mobility 8301 Fort McMurray —
2012-01-26 587-647 not yet reported which blocks → TELUS Mobility 8301 Falher —
2012-01-25 206-486 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F SEATTLE WA
2012-01-25 571-441 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G HERNDON VA
2012-01-25 610-674 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALLENTOWN PA
2012-01-25 906-448 0–9 XXXall 10 · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E IRON MT MI
2012-01-25 928-212 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AZ 630E PAGE AZ
2012-01-25 971-254 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2012-01-24 226-884 not yet reported which blocks → Fibernetics Corporation 464D London —

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.