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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 914-234 1XXX5XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 BEDFORDVLG NY
— 914-235 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN03 NY
— 914-237 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN01 NY
— 914-238 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 CHAPPAQUA NY
— 914-239 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → AT&T - LOCAL 7421 PLEASANTVL NY
— 914-241 5XXX which blocks → VERIZON NEW YORK, INC. 9104 MOUNTKISCO NY
— 914-242 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 MOUNTKISCO NY
— 914-243 1XXX which blocks → VERIZON NEW YORK, INC. 9104 BIRCHWOOD NY
— 914-244 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 MOUNTKISCO NY
— 914-245 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 YORKTN HTS NY
— 914-248 1XXX9XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 BIRCHWOOD NY
— 914-249 9XXX which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN09 NY
— 914-250 1XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WSCHSTZN04 NY
— 914-251 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN09 NY
— 914-253 1XXX5XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN09 NY
— 914-256 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC- NY 384C MAHOPAC NY
— 914-259 0XXX5XXX8XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSCHSTZN08 NY
— 914-260 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WSCHSTZN08 NY
— 914-261 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WSCHSTZN08 NY
— 914-262 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WSCHSTZN08 NY
— 914-263 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WSCHSTZN08 NY
— 914-264 not yet reported which blocks → SPOK, INC. 6630 SPRING VLY NY
— 914-265 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WSCHSTZN01 NY
— 914-269 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J WSCHSTZN08 NY
— 914-271 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 CRTNONHDSN NY
— 914-272 0XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → AT&T - LOCAL 7421 WSCHSTZN08 NY
— 914-273 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ARMONK VLG NY
— 914-274 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 WSCHSTZN02 NY
— 914-275 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WSCHSTZN06 NY
— 914-276 4XXX5XXX6XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 CROTON FLS NY
— 914-277 6XXX9XXX which blocks → VERIZON NEW YORK, INC. 9104 CROTON FLS NY
— 914-281 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
— 914-282 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSCHSTZN08 NY
— 914-283 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 MIDDLETOWN NY
— 914-284 not yet reported which blocks → SPOK, INC. 6630 WSCHSTZN08 NY
— 914-285 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
— 914-286 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
— 914-287 9XXX which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
— 914-288 1XXX5XXX6XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
— 914-289 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
— 914-290 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 WSCHSTZN08 NY
— 914-293 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 PEEKSKILL NY
— 914-298 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E WSCHSTZN08 NY
— 914-299 2XXX which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 MOUNTKISCO NY
— 914-300 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C WSCHSTZN03 NY
— 914-301 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → TC SYSTEMS, INC. - NY 7140 KATONAH NY
— 914-302 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7650 YORKTN HTS NY
— 914-303 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7650 ARMONK VLG NY
— 914-304 0XXX2XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TC SYSTEMS, INC. - NY 7140 WSCHSTZN08 NY
— 914-305 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TC SYSTEMS, INC. - NY 7140 WSCHSTZN09 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.