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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXAssigneeOCNRate centerState
917-880 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
917-881 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
917-882 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
917-883 SPOK, INC. 6630 NWYRCYZN01 NY
917-884 SPOK, INC. 6630 NWYRCYZN01 NY
917-885 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
917-886 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
917-887 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
917-888 ZCALL.COM, INC. 0059 NWYRCYZN11 NY
917-889 METROPCS, INC. 5562 NWYRCYZN03 NY
917-894 SPOK, INC. 6630 NWYRCYZN06 NY
917-895 SPOK, INC. 6630 NWYRCYZN11 NY
917-896 SPOK, INC. 6630 NWYRCYZN11 NY
917-897 SPOK, INC. 6630 NWYRCYZN01 NY
917-898 SPOK, INC. 6630 NWYRCYZN01 NY
917-899 SPOK, INC. 6630 NWYRCYZN01 NY
917-901 SPOK, INC. 6630 NWYRCYZN01 NY
917-902 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
917-903 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
917-904 SPOK, INC. 6630 NWYRCYZN01 NY
917-906 SPOK, INC. 6630 NWYRCYZN01 NY
917-909 CABLEVISION LIGHTPATH, INC. - NY 7126 NWYRCYZN06 NY
917-910 VERIZON NEW YORK, INC. 9104 XXXXXXXXXX NY
917-911 MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
917-912 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
917-913 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
917-915 OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
917-918 SPOK, INC. 6630 NWYRCYZN01 NY
917-919 SPOK, INC. 6630 NWYRCYZN01 NY
917-921 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
917-922 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
917-923 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
917-925 SPOK, INC. 6630 NWYRCYZN06 NY
917-926 SPOK, INC. 6630 NWYRCYZN01 NY
917-927 SPOK, INC. 6630 NWYRCYZN01 NY
917-929 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN10 NY
917-930 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN10 NY
917-931 VERIZON NEW YORK, INC. 9104 NWYRCYZN06 NY
917-932 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN15 NY
917-934 VERIZON NEW YORK, INC. 9104 NWYRCYZN01 NY
917-937 VERIZON NEW YORK, INC. 9104 NWYRCYZN01 NY
917-939 OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
917-940 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
917-941 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
917-945 OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
917-948 SPOK, INC. 6630 NWYRCYZN06 NY
917-949 SPOK, INC. 6630 NWYRCYZN06 NY
917-950 NY
917-951 NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN10 NY
917-952 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 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.