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
989-928 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 SAGINAW MI
989-929 AMERICAN MESSAGING SERVICES, LLC 9748 BAY CITY MI
989-934 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROSE CITY MI
989-935 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLARE MI
989-938 MICHIGAN CENTRAL BROADBAND COMPANY, LLC 785G GRACE HBR MI
989-939 MICHIGAN CENTRAL BROADBAND COMPANY, LLC 785G CHESTER MI
989-941 LEVEL 3 COMMUNICATIONS, LLC - MI 6120 MIDLAND MI
989-942 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WESTBRANCH MI
989-943 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MIDDLETON MI
989-946 PAETEC ITEL, LLC 829J STANDISH MI
989-950 MI
989-953 WINN TELEPHONE COMPANY DBA WINN TELECOM - MI 0127 MTPLEASANT MI
989-954 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MTPLEASANT MI
989-958 MI
989-959 MI
989-967 FRONTIER NORTH, INC. - MI 0695 REMUS MI
989-968 WINN TELEPHONE COMPANY DBA WINN TELECOM - MI 0127 ALMA MI
989-971 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SAGINAW MI
989-975 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BAD AXE MI
989-976 MI
989-977 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SEBEWAING MI
989-979 AMERICAN MESSAGING SERVICES, LLC 9748 ST JOHNS MI
989-981 FRONTIER NORTH, INC. - MI 0695 HUBBARDSTN MI
989-983 FRONTIER NORTH, INC. - MI 0695 VANDERBILT MI
989-984 MICHIGAN BELL TEL CO 9323 EAST TAWAS 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.