NumberResearch Membership · Data 09/18/2026

Recent prefix assignments

369 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/18/2026

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 37
NEW CINGULAR WIRELESS PCS, LLC - IL 33
NEW CINGULAR WIRELESS PCS, LLC - DC 30
ONVOY, LLC - TX 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
989-594 SPOK, INC. 6630 GAYLORD MI
989-595 FRONTIER NORTH, INC. - MI 0695 LONG LAKE MI
989-598 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 SAGINAW MI
989-599 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 SAGINAW MI
989-601 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ITHACA MI
989-603 AMERICAN MESSAGING SERVICES, LLC 9748 ALPENA MI
989-610 AMERICAN MESSAGING SERVICES, LLC 9748 SAGINAW MI
989-611 MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
989-612 AMERICAN MESSAGING SERVICES, LLC 9748 MTPLEASANT MI
989-613 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SHERIDAN MI
989-614 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GAYLORD MI
989-615 METROPCS, INC. 5562 MIDLAND MI
989-619 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GAYLORD MI
989-620 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ALMA MI
989-621 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 MTPLEASANT MI
989-624 MICHIGAN BELL TEL CO 9323 BIRCH RUN MI
989-631 MICHIGAN BELL TEL CO 9323 MIDLAND MI
989-633 MICHIGAN BELL TEL CO 9323 MIDLAND MI
989-634 FRONTIER NORTH, INC. - MI 0695 BANCROFT MI
989-635 BRIGHTSPEED OF MICHIGAN, LLC 0702 MARLETTE MI
989-636 MICHIGAN BELL TEL CO 9323 MIDLAND MI
989-637 FRONTIER NORTH, INC. - MI 0695 PALO MI
989-638 MICHIGAN BELL TEL CO 9323 MIDLAND MI
989-640 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ST JOHNS MI
989-642 FRONTIER NORTH, INC. - MI 0695 HEMLOCK MI
989-643 FRONTIER NORTH, INC. - MI 0695 MERRILL MI
989-644 FRONTIER NORTH, INC. - MI 0695 WEIDMAN MI
989-652 MICHIGAN BELL TEL CO 9323 FRANKENMTH MI
989-653 BRIGHTSPEED OF CENTRAL MICHIGAN, INC 0671 OMER MI
989-654 FRONTIER MIDSTATES, INC. - MI 0681 STERLING MI
989-656 MICHIGAN BELL TEL CO 9323 BAY PORT MI
989-657 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALPENA MI
989-658 MICHIGAN BELL TEL CO 9323 UBLY MI
989-659 WOLVERINE TEL. CO. 0738 MUNGER MI
989-660 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MAYVILLE MI
989-661 FARMERS MUTUAL OF CHAPIN DBA CHAPIN TELEPHONE CO. 0694 CHAPIN MI
989-662 MICHIGAN BELL TEL CO 9323 AUBURN MI
989-665 MICHIGAN BELL TEL CO 9323 GAGETOWN MI
989-666 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 OWOSSO MI
989-667 MICHIGAN BELL TEL CO 9323 BAY CITY MI
989-670 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARO MI
989-671 MICHIGAN BELL TEL CO 9323 BAY CITY MI
989-672 BRIGHTSPEED OF MICHIGAN, LLC 0702 CARO MI
989-673 BRIGHTSPEED OF MICHIGAN, LLC 0702 CARO MI
989-674 MICHIGAN BELL TEL CO 9323 UNIONVILLE MI
989-678 MICHIGAN BELL TEL CO 9323 OWENDALE MI
989-681 FRONTIER NORTH, INC. - MI 0695 ST LOUIS MI
989-682 FRONTIER NORTH, INC. - MI 0695 MAPLE RPD MI
989-683 FRONTIER NORTH, INC. - MI 0695 KINGSTON MI
989-684 MICHIGAN BELL TEL CO 9323 BAY CITY MI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.