NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.

Most active assignees, last 30 days
8X8, INC. 38
ONVOY, LLC - CA 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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-NXXAssigneeOCNRate centerState
740-664 FRONTIER NORTH, INC. - OH 0615 NEWMRSHFLD OH
740-666 FRONTIER NORTH, INC. - OH 0615 OSTRANDER OH
740-667 WINDSTREAM WESTERN RESERVE, INC. 0666 COOLVILLE OH
740-668 BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 MARTINSBG OH
740-669 FRONTIER NORTH, INC. - OH 0615 WILKESVL OH
740-670 WINDSTREAM OHIO, LLC 0665 NEWARK OH
740-671 OHIO BELL TEL CO 9321 BELLAIRE OH
740-674 OHIO BELL TEL CO 9321 PHILO OH
740-676 OHIO BELL TEL CO 9321 BELLAIRE OH
740-678 FRONTIER NORTH, INC. - OH 0615 BARLOW OH
740-679 WINDSTREAM WESTERN RESERVE, INC. 0666 QUAKERCITY OH
740-680 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CAMBRIDGE OH
740-681 OHIO BELL TEL CO 9321 LANCASTER OH
740-682 FRONTIER NORTH, INC. - OH 0615 OAK HILL OH
740-683 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ZANESVILLE OH
740-684 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEWLXINGTN OH
740-685 FRONTIER NORTH, INC. - OH 0615 BYESVILLE OH
740-686 WINDSTREAM WESTERN RESERVE, INC. 0666 CENTERVL OH
740-687 OHIO BELL TEL CO 9321 LANCASTER OH
740-689 OHIO BELL TEL CO 9321 LANCASTER OH
740-694 BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 FREDERCKTN OH
740-695 OHIO BELL TEL CO 9321 STCLAIRSVL OH
740-696 FRONTIER NORTH, INC. - OH 0615 SHADE OH
740-697 OHIO BELL TEL CO 9321 ROSEVILLE OH
740-698 FRONTIER NORTH, INC. - OH 0615 ALBANY OH
740-699 OHIO BELL TEL CO 9321 STCLAIRSVL OH
740-700 OH
740-701 AERIAL COMMUNICATIONS, INC. 6701 CHILLICOTH OH
740-702 CHILLICOTHE TEL. CO. 0597 CHILLICOTH OH
740-703 AERIAL COMMUNICATIONS, INC. 6701 CHILLICOTH OH
740-704 AERIAL COMMUNICATIONS, INC. 6701 ZANESVILLE OH
740-705 AERIAL COMMUNICATIONS, INC. 6701 CAMBRIDGE OH
740-706 AERIAL COMMUNICATIONS, INC. 6701 MARIETTA OH
740-707 AERIAL COMMUNICATIONS, INC. 6701 ATHENS OH
740-708 AERIAL COMMUNICATIONS, INC. 6701 WAVERLY OH
740-709 METROPCS, INC. 5562 GALLIPOLIS OH
740-710 AERIAL COMMUNICATIONS, INC. 6701 JACKSON OH
740-711 MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
740-725 FRONTIER NORTH, INC. - OH 0615 MARION OH
740-726 FRONTIER NORTH, INC. - OH 0615 WALDO OH
740-732 FRONTIER NORTH, INC. - OH 0615 CALDWELL OH
740-733 FRONTIER NORTH, INC. - OH 0615 SMITHFIELD OH
740-734 AMERICAN MESSAGING SERVICES, LLC 9748 LANCASTER OH
740-735 SPOK, INC. 6630 ZANESVILLE OH
740-736 LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MARION OH
740-738 BANDWIDTH.COM CLEC, LLC - OH 001F MARTISFRRY OH
740-739 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 PATASKALA OH
740-742 FRONTIER NORTH, INC. - OH 0615 POMEROY OH
740-743 OHIO BELL TEL CO 9321 SOMERSET OH
740-745 WINDSTREAM OHIO, LLC 0665 ST LOUISVL OH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.