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
2012-07-05 740-909 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K CHESHIRCTR OH
2012-07-05 772-444 0–9 XXXall 10 · 6 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G JENSEN BCH FL
2012-07-03 210-819 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2012-07-03 336-895 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 GREENSBORO NC
2012-07-03 417-720 0–9 XXXall 10 · 5 holders which blocks → MCC TELEPHONY LLC 593K SPRINGFLD MO
2012-07-03 502-892 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 TELECOM OF KENTUCKY, LLC - KY 7260 FRANKFORT KY
2012-07-03 913-333 0–9 XXXall 10 · 4 holders which blocks → AVID COMMUNICATIONS, LLC - KS 742D KANSASCITY KS
2012-07-03 918-416 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 TELECOM OF OKLAHOMA, LLC - OK 7632 CATOOSA OK
2012-07-02 513-926 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-07-02 904-528 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 JACKSONVL FL
2012-07-02 929-225 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN13 NY
2012-06-29 216-777 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F CLEVELAND OH
2012-06-29 270-367 0–9 XXXall 10 · 7 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LONDON 9691 CANEYVILLE KY
2012-06-29 270-390 0–9 XXXall 10 · 7 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K RADCLIFF KY
2012-06-29 415-687 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SAUSALITO CA
2012-06-29 442-223 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NEWBERRY CA
2012-06-29 475-200 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F HUNTINGTON CT
2012-06-29 626-328 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
2012-06-29 772-247 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E STUART FL
2012-06-29 803-814 0–9 XXXall 10 · 4 holders which blocks → FAIRFIELD COMMUNICATIONS, INC. - SC 863A COLUMBIA SC
2012-06-29 832-686 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 HSTNSUBURB TX
2012-06-29 858-251 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LA JOLLA CA
2012-06-29 859-869 0–9 XXXall 10 · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K BOONE KY
2012-06-29 863-246 0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E POINCIANA FL
2012-06-29 928-494 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SEDONA AZ
2012-06-28 587-703 not yet reported which blocks → Videotron Ltd. 787G Calgary —
2012-06-28 602-842 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2012-06-28 647-590 not yet reported which blocks → Videotron Ltd. 8306 Toronto —
2012-06-28 720-430 0–9 XXXall 10 · 3 holders which blocks → AT&T - LOCAL 7421 DENVER CO
2012-06-28 778-762 not yet reported which blocks → Iristel Inc. 154E Nanaimo —
2012-06-28 910-589 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 WILMINGTON NC
2012-06-28 980-523 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 CHARLOTTE NC
2012-06-27 248-234 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J SOUTHFIELD MI
2012-06-27 470-209 0–9 XXXall 10 · 3 holders which blocks → DOVETEL COMMUNICATIONS, LLC - GA 362B WINDER GA
2012-06-27 816-666 0–9 XXXall 10 · 5 holders which blocks → AVID COMMUNICATIONS, LLC - MO 718D KANSASCITY MO
2012-06-26 226-329 not yet reported which blocks → Execulink Telecom Inc. 8226 Nairn —
2012-06-26 289-830 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Oshawa —
2012-06-26 336-487 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 GREENSBORO NC
2012-06-26 412-888 0–9 XXXall 10 · 4 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 PTTSBGZON1 PA
2012-06-26 470-296 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 CEDARTOWN GA
2012-06-26 518-757 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 BERNE NY
2012-06-26 587-800 not yet reported which blocks → Iristel Inc. 154E Lethbridge —
2012-06-26 587-801 not yet reported which blocks → Iristel Inc. 154E Medicine Hat —
2012-06-26 587-802 not yet reported which blocks → Iristel Inc. 154E Red Deer —
2012-06-26 587-803 not yet reported which blocks → Iristel Inc. 154E Grande Prairie —
2012-06-26 717-888 0–9 XXXall 10 · 4 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 HARISBGZN1 PA
2012-06-26 720-508 0–9 XXXall 10 · 6 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 3467 DENVER CO
2012-06-26 845-640 0–9 XXXall 10 · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 FALLSBURG NY
2012-06-26 989-423 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MIDLAND MI
2012-06-25 415-423 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA

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.