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
917-748 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
917-749 OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
917-750 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
917-751 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
917-752 SPOK, INC. 6630 NWYRCYZN01 NY
917-753 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN06 NY
917-754 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN06 NY
917-755 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN06 NY
917-757 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN07 NY
917-758 SPOK, INC. 6630 NWYRCYZN06 NY
917-759 SPOK, INC. 6630 NWYRCYZN06 NY
917-760 SPOK, INC. 6630 NWYRCYZN06 NY
917-761 SPOK, INC. 6630 NWYRCYZN06 NY
917-762 SPOK, INC. 6630 NWYRCYZN01 NY
917-763 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
917-766 SPOK, INC. 6630 NWYRCYZN06 NY
917-767 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN10 NY
917-769 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN10 NY
917-770 OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
917-771 OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
917-773 BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN04 NY
917-775 OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN09 NY
917-776 OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
917-777 VERIZON NEW YORK, INC. 9104 NWYRCYZN01 NY
917-778 VERIZON NEW YORK, INC. 9104 NWYRCYZN01 NY
917-779 VERIZON NEW YORK, INC. 9104 NWYRCYZN01 NY
917-783 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
917-784 SPOK, INC. 6630 NWYRCYZN01 NY
917-785 SPOK, INC. 6630 NWYRCYZN01 NY
917-786 SPOK, INC. 6630 NWYRCYZN01 NY
917-787 SPOK, INC. 6630 NWYRCYZN01 NY
917-788 SPOK, INC. 6630 NWYRCYZN01 NY
917-790 VERIZON NEW YORK, INC. 9104 NWYRCYZN01 NY
917-796 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
917-797 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
917-798 SPOK, INC. 6630 NWYRCYZN01 NY
917-799 SPOK, INC. 6630 NWYRCYZN01 NY
917-802 SPOK, INC. 6630 NWYRCYZN01 NY
917-803 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN06 NY
917-804 OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
917-805 OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
917-806 OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
917-807 OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
917-811 MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
917-812 SPOK, INC. 6630 NWYRCYZN01 NY
917-815 OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
917-816 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
917-817 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
917-820 SPOK, INC. 6630 NWYRCYZN01 NY
917-821 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY

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.