NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 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)

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, all time — NPA 914
VERIZON NEW YORK, INC. 191
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
2011-02-01 914-254 0–9 XXXwhole prefix which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN07 NY
2004-04-30 914-425 0–9 XXXall 10 · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN07 NY
2001-02-07 914-455 0XXX1XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 YORKTN HTS NY
2001-01-10 914-512 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN01 NY
2001-01-10 914-615 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
2001-01-10 914-627 0–9 XXXall 10 · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN06 NY
2001-01-10 914-708 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN09 NY
— 914-232 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 KATONAH NY
— 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
— 914-241 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
— 914-251 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
— 914-271 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 CRTNONHDSN NY
— 914-273 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ARMONK VLG 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
— 914-285 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
— 914-322 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
— 914-328 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
— 914-332 2XXX3XXX which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN07 NY
— 914-333 3XXX which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN07 NY
— 914-337 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN02 NY
— 914-345 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN07 NY
— 914-347 9XXX which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN07 NY
— 914-366 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN07 NY
— 914-375 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN01 NY
— 914-376 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN01 NY
— 914-377 5XXX which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN01 NY
— 914-378 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN01 NY
— 914-381 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN06 NY
— 914-390 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
— 914-394 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
— 914-395 8XXX9XXX which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN02 NY
— 914-397 3XXX which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
— 914-410 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN01 NY
— 914-421 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 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.