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
— 914-307 0XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ARMONK VLG NY
— 914-309 not yet reported which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 WSCHSTZN08 NY
— 914-310 not yet reported which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 WSCHSTZN08 NY
— 914-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 914-312 0XXX1XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSCHSTZN09 NY
— 914-313 3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 WSCHSTZN08 NY
— 914-315 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 WSCHSTZN06 NY
— 914-316 not yet reported which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 WSCHSTZN08 NY
— 914-318 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSCHSTZN08 NY
— 914-319 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSCHSTZN08 NY
— 914-320 not yet reported which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 WSCHSTZN08 NY
— 914-321 not yet reported which blocks → SPOK, INC. 6630 WSCHSTZN08 NY
— 914-322 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
— 914-323 8XXX which blocks → TC SYSTEMS, INC. - NY 7140 WSCHSTZN08 NY
— 914-325 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSCHSTZN08 NY
— 914-328 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
— 914-329 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WSCHSTZN08 NY
— 914-330 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7650 WSCHSTZN04 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
— 914-343 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 WSCHSTZN01 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
— 914-360 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7650 WSCHSTZN02 NY
— 914-363 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K MT VERNON NY
— 914-366 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN07 NY
— 914-368 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 WSCHSTZN08 NY
— 914-371 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TC SYSTEMS, INC. - NY 7140 MT VERNON NY
— 914-372 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 9 holders which blocks → AT&T - LOCAL 7421 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
— 914-379 not yet reported which blocks → SPOK, INC. 6630 WSCHSTZN01 NY
— 914-380 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7650 WSCHSTZN03 NY
— 914-381 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN06 NY
— 914-385 not yet reported which blocks → PAETEC ITEL, LLC 829J WSCHSTZN08 NY
— 914-388 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 KINGSTON NY
— 914-389 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 KINGSTON NY
— 914-390 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
— 914-391 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WSCHSTZN08 NY
— 914-393 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 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
— 914-396 0XXX2XXX which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 WSCHSTZN08 NY
— 914-397 3XXX which blocks → VERIZON NEW YORK, INC. 9104 WSCHSTZN08 NY
— 914-399 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 KINGSTON NY
— 914-400 3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 WSCHSTZN04 NY
— 914-402 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J PEEKSKILL 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.