NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 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, all time — NPA 315
VERIZON NEW YORK, INC. 216
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 78
PAETEC ITEL, LLC 63
TWC IP ENABLED SERVICES, LLC 46
NEW CINGULAR WIRELESS PCS, LLC - DC 46
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
— 315-884 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 SYRACUSE NY
— 315-885 0XXX2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 SYRACUSE NY
— 315-889 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 7 holders which blocks → VERIZON NEW YORK, INC. 9104 UNION SPG NY
— 315-890 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WADDINGTON NY
— 315-891 4XXX which blocks → NEWPORT TEL. CO., INC. 0107 MIDDLEVL NY
— 315-893 0XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 MADISON NY
— 315-894 1XXX6XXX7XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 ILION NY
— 315-895 0XXX1XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 ILION NY
— 315-896 0XXX1XXX3XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 BARNEVELD NY
— 315-899 1XXX2XXX4XXX · 3 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 BROOKFIELD NY
— 315-902 0–9 XXXall 10 · 5 holders which blocks → TC SYSTEMS, INC. - NY 7140 CLYDE NY
— 315-903 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TC SYSTEMS, INC. - NY 7140 MACEDON NY
— 315-904 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TC SYSTEMS, INC. - NY 7140 WILLIAMSON NY
— 315-905 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → TC SYSTEMS, INC. - NY 7140 WOLCOTT NY
— 315-906 0XXX3XXX4XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K CLIFTONSPG NY
— 315-910 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 XXXXXXXXXX NY
— 315-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 315-912 0XXX9XXX · 2 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K CONSTABLVL NY
— 315-913 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SYRACUSE NY
— 315-915 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 CICERO NY
— 315-918 1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K DEXTER NY
— 315-921 0XXX1XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 WATERTOWN NY
— 315-923 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 CLYDE NY
— 315-924 0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 4 holders which blocks → NORTHLAND NETWORKS, LTD. - NY 7556 PENN YAN NY
— 315-926 0XXX1XXX2XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 MARION NY
— 315-928 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SYRACUSE NY
— 315-934 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K PHOENIX NY
— 315-938 0XXX1XXX2XXX3XXX4XXX6XXX8XXX · 2 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 HENDERSON NY
— 315-942 none assigned yet which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 BOONVILLE NY
— 315-943 none assigned yet which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 BOONVILLE NY
— 315-945 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LYONS NY
— 315-946 0XXX1XXX2XXX3XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 LYONS NY
— 315-947 0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 4 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 FAIR HAVEN NY
— 315-948 0XXX1XXX3XXX6XXX7XXX8XXX · 4 holders which blocks → NORTHLAND NETWORKS, LTD. - NY 7556 ALEXNDRIBY NY
— 315-950 not yet reported which blocks → NY
— 315-952 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SYRACUSE NY
— 315-953 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K VERNON NY
— 315-955 0XXX2XXX3XXX4XXX5XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WATERTOWN NY
— 315-957 0–9 XXXall 10 · 8 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 MASSENA NY
— 315-958 not yet reported which blocks → NY
— 315-959 not yet reported which blocks → NY
— 315-963 1XXX2XXX6XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 MEXICO NY
— 315-964 4XXX6XXX8XXX · 3 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 WILLIAMSTN NY
— 315-966 0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 MACEDON NY
— 315-970 not yet reported which blocks → NY
— 315-976 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 315-977 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC- NY 384C RICHFLDSPG NY
— 315-986 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 MACEDON NY
— 315-988 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC- NY 384C COPENHAGEN NY
— 315-999 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C CLEVELAND 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.