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
989-326 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 SAGINAW MI
989-328 FRONTIER NORTH, INC. - MI 0695 SIDNEY MI
989-330 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MTPLEASANT MI
989-343 MICHIGAN BELL TEL CO 9323 WESTBRANCH MI
989-344 FRONTIER NORTH, INC. - MI 0695 GRAYLING MI
989-345 MICHIGAN BELL TEL CO 9323 WESTBRANCH MI
989-348 FRONTIER NORTH, INC. - MI 0695 GRAYLING MI
989-349 ONVOY, LLCV - MI 543C BIRCH RUN MI
989-350 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GAYLORD MI
989-352 FRONTIER NORTH, INC. - MI 0695 LAKEVIEW MI
989-354 FRONTIER NORTH, INC. - MI 0695 ALPENA MI
989-356 FRONTIER NORTH, INC. - MI 0695 ALPENA MI
989-358 FRONTIER NORTH, INC. - MI 0695 ALPENA MI
989-362 MICHIGAN BELL TEL CO 9323 EAST TAWAS MI
989-365 FRONTIER NORTH, INC. - MI 0695 SIX LAKES MI
989-366 FRONTIER NORTH, INC. - MI 0695 HOUGHTONLK MI
989-370 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GAYLORD MI
989-375 FRONTIER NORTH, INC. - MI 0695 ELKTON MI
989-379 FRONTIER NORTH, INC. - MI 0695 LACHINE MI
989-382 FRONTIER NORTH, INC. - MI 0695 BARRYTON MI
989-383 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOWLERPWMO MI
989-384 AMERICAN MESSAGING SERVICES, LLC 9748 SAGINAW MI
989-385 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 SAGINAW MI
989-386 MICHIGAN BELL TEL CO 9323 CLARE MI
989-389 MICHIGAN BELL TEL CO 9323 ST HELEN MI
989-391 NUSO, LLC 732J BAY CITY MI
989-395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 SAGINAW MI
989-396 AMERICAN MESSAGING SERVICES, LLC 9748 CLARE MI
989-397 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SAGINAW MI
989-399 PAETEC ITEL, LLC 829J SAGINAW MI
989-405 AMERICAN MESSAGING SERVICES, LLC 9748 FREELAND MI
989-411 MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
989-412 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 SAGINAW MI
989-413 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 OWOSSO MI
989-421 PAETEC ITEL, LLC 829J CLARE MI
989-422 FRONTIER NORTH, INC. - MI 0695 HOUGHTONLK MI
989-426 MICHIGAN BELL TEL CO 9323 GLADWIN MI
989-427 FRONTIER NORTH, INC. - MI 0695 EDMORE MI
989-428 BRIGHTSPEED OF MICHIGAN, LLC 0702 PORT HOPE MI
989-429 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 HARRISON MI
989-430 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MIDLAND MI
989-433 MICHIGAN BELL TEL CO 9323 ROSEBUSH MI
989-434 AMERICAN MESSAGING SERVICES, LLC 9748 BAD AXE MI
989-435 MICHIGAN BELL TEL CO 9323 BEAVERTON MI
989-440 AMERICAN MESSAGING SERVICES, LLC 9748 CLARE MI
989-444 NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MTPLEASANT MI
989-450 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 BAY CITY MI
989-453 PIGEON TEL. CO. 0721 PIGEON MI
989-454 SPOK, INC. 6630 MIDLAND MI
989-460 PAETEC ITEL, LLC 829J 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.