NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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. 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-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 914-403 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 WSCHSTZN08 NY
— 914-404 not yet reported which blocks → AMERICAN NETWORK, INC. 8667 MOUNTKISCO NY
— 914-405 not yet reported which blocks → AMERICAN NETWORK, INC. 8667 WSCHSTZN07 NY
— 914-406 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WSCHSTZN08 NY
— 914-407 2XXX3XXX4XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7650 WSCHSTZN07 NY
— 914-409 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TC SYSTEMS, INC. - NY 7140 WSCHSTZN04 NY
— 914-410 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN01 NY
— 914-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 914-412 1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7650 WSCHSTZN06 NY
— 914-413 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSCHSTZN08 NY
— 914-414 4XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSCHSTZN08 NY
— 914-416 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC- NY 384C LEWISBORO NY
— 914-417 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WSCHSTZN09 NY
— 914-418 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → RCN TELECOM SERVICES, INC. - NY 7353 WSCHSTZN07 NY
— 914-419 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WSCHSTZN08 NY
— 914-420 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WSCHSTZN08 NY
— 914-421 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
— 914-422 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
— 914-423 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN01 NY
— 914-428 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
— 914-441 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSCHSTZN08 NY
— 914-442 not yet reported which blocks → SPOK, INC. 6630 WSCHSTZN08 NY
— 914-443 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 MIDDLETOWN NY
— 914-444 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H OSSINING NY
— 914-445 not yet reported which blocks → SPOK, INC. 6630 WSCHSTZN08 NY
— 914-447 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 WSCHSTZN08 NY
— 914-448 3XXX6XXX which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
— 914-450 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WSCHSTZN06 NY
— 914-453 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 POUGHKEPSI NY
— 914-456 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 POUGHKEPSI NY
— 914-459 not yet reported which blocks → PAETEC ITEL, LLC 829J MT VERNON NY
— 914-460 3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 WSCHSTZN07 NY
— 914-461 5XXX6XXX7XXX8XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 WSCHSTZN08 NY
— 914-464 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 POUGHKEPSI NY
— 914-465 0–9 XXXall 10 · 9 holders which blocks → ONVOY, LLC- NY 384C MT VERNON NY
— 914-466 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 KINGSTON NY
— 914-467 0XXX8XXX9XXX which blocks → TC SYSTEMS, INC. - NY 7140 WSCHSTZN08 NY
— 914-470 not yet reported which blocks → PAETEC ITEL, LLC 829J WSCHSTZN08 NY
— 914-472 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN05 NY
— 914-474 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 POUGHKEPSI NY
— 914-475 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 POUGHKEPSI NY
— 914-476 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN01 NY
— 914-478 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN04 NY
— 914-479 1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN04 NY
— 914-480 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 XXXXXXXXXX NY
— 914-481 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 WSCHSTZN09 NY
— 914-489 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 POUGHKEPSI NY
— 914-490 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 WSCHSTZN08 NY
— 914-491 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H WSCHSTZN05 NY
— 914-492 not yet reported which blocks → SPOK, INC. 6630 WSCHSTZN08 NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.