NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, last 30 days
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 19
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-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 347-834 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN06 NY
— 347-837 not yet reported which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN08 NY
— 347-841 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TC SYSTEMS, INC. - NY 7140 NWYRCYZN11 NY
— 347-854 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN03 NY
— 347-857 0–9 XXXall 10 · 4 holders which blocks → XCHANGE TELECOM CORP. - NY 325B NWYRCYZN14 NY
— 347-861 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN14 NY
— 347-862 0–9 XXXall 10 · 3 holders which blocks → CSC VOICE, LLC 612K NWYRCYZN03 NY
— 347-865 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN07 NY
— 347-866 not yet reported which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN06 NY
— 347-869 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → METROPCS, INC. 5562 NWYRCYZN12 NY
— 347-878 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 NWYRCYZN10 NY
— 347-879 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN03 NY
— 347-881 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 NWYRCYZN06 NY
— 347-888 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN05 NY
— 347-890 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NWYRCYZN06 NY
— 347-895 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NWYRCYZN12 NY
— 347-910 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 XXXXXXXXXX NY
— 347-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 347-922 7XXX8XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN07 NY
— 347-923 0XXX1XXX2XXX6XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN09 NY
— 347-926 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NWYRCYZN13 NY
— 347-934 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN14 NY
— 347-936 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NWYRCYZN08 NY
— 347-950 not yet reported which blocks → NY
— 347-952 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN10 NY
— 347-958 not yet reported which blocks → NY
— 347-959 not yet reported which blocks → NY
— 347-963 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN03 NY
— 347-976 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 347-983 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN15 NY
— 347-990 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN13 NY
— 347-993 7XXX8XXX which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN03 NY
— 347-995 0–9 XXXall 10 · 2 holders which blocks → YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN05 NY
— 350-207 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 732J MODESTO CA
— 350-208 1XXX2XXX7XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H KNIGHTFRRY CA
— 350-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT CA
— 350-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT CA
— 350-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT CA
— 350-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT CA
— 350-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST CA
— 350-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT CA
— 350-700 not yet reported which blocks → CA
— 350-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT CA
— 350-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT CA
— 350-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT CA
— 350-950 not yet reported which blocks → CA
— 350-958 not yet reported which blocks → CA
— 350-959 not yet reported which blocks → CA
— 350-976 not yet reported which blocks → CA
— 351-201 3XXX4XXX5XXX7XXX8XXX which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 DANVERS MA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.